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| akka book: Effective Akka Jamie Allen, 2013-08-15 Avoid common mistakes when building distributed, asynchronous, high-performance software with the Akka toolkit and runtime. With this concise guide, author Jamie Allen provides a collection of best practices based on several years of using the actor model. The book also includes examples of actor application types and two primary patterns of actor usage, the Extra Pattern and Cameo Pattern. Allen, the Director of Consulting for Typesafe—creator of Akka and the Scala programming language—examines actors with a banking-service use case throughout the book, using examples shown in Akka and Scala. If you have any experience with Akka, this guide is essential. Delve into domain-driven and work-distribution actor applications Understand why it’s important to have actors do only one job Avoid thread blocking by allowing logic to be delegated to a Future Model interactions as simply as possible to avoid premature optimization Create well-defined interactions, and know exactly what failures can occur Learn why you should never treat actors as you would an ordinary class Keep track of what goes on in production by monitoring everything Tune Akka applications with the Typesafe Console |
| akka book: Akka in Action Raymond Roestenburg, Rob Bakker, Rob Williams, 2016-09-30 Summary Akka in Action is a comprehensive tutorial on building message-oriented systems using Akka. The book takes a hands-on approach, where each new concept is followed by an example that shows you how it works, how to implement the code, and how to (unit) test it. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Akka makes it relatively easy to build applications in the cloud or on devices with many cores that efficiently use the full capacity of the computing power available. It's a toolkit that provides an actor programming model, a runtime, and required support tools for building scalable applications. About the Book Akka in Action shows you how to build message-oriented systems with Akka. This comprehensive, hands-on tutorial introduces each concept with a working example. You'll start with the big picture of how Akka works, and then quickly build and deploy a fully functional REST service out of actors. You'll explore test-driven development and deploying and scaling fault-tolerant systems. After mastering the basics, you'll discover how to model immutable messages, implement domain models, and apply techniques like event sourcing and CQRS. You'l also find a tutorial on building streaming applications using akka-stream and akka-http. Finally, you'l get practical advice on how to customize and extend your Akka system. What's Inside Getting concurrency right Testing and performance tuning Clustered and cloud-based applications Covers Akka version 2.4 About the Reader This book assumes that you're comfortable with Java and Scala. No prior experience with Akka required. About the Authors A software craftsman and architect, Raymond Roestenburg is an Akka committer. Rob Bakker specializes in concurrent back-end systems and systems integration. Rob Williams has more than 20 years of product development experience. Table of Contents Introducing Akka Up and running Test-driven development with actors Fault tolerance Futures Your first distributed Akka app Configuration, logging, and deployment Structural patterns for actors Routing messages Message channels Finite-state machines and agents System integration Streaming Clustering Actor persistence Performance tips Looking ahead |
| akka book: Reactive Applications with Akka.NET Anthony Brown, 2019-03-05 Summary Reactive Applications with Akka.NET is a hands-on book that builds on fundamental concepts to teach you how to create reliable and resilient applications in the reactive style. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Enterprise-scale software needs to be unfailingly reliable, consistently performant under unpredictable loads, and easy to scale and maintain. Reactive applications guarantee these qualities through clear isolation of system components and message-based communication. Akka.NET ports the battle-tested Akka Actors toolkit from the JVM, radically simplifying the concurrency and asynchronous message handling at the heart of a reactive system. About the Book Reactive Applications with Akka.NET teaches you to write high-performance, concurrent systems without explicitly managing threads and locking. You'll experience the power of Akka.NET and the Actors concurrency model by exploring a real-world case study in each chapter. As you go further, you'll start to grok the power of asynchronous communication in a distributed environment and take on practical tasks like deploying, debugging, and establishing performance guarantees. What's Inside Reactive application design Dealing with application-level failures Integrating Akka.NET with other frameworks Applying reactive programming to the real world About the Reader Readers should be comfortable with C# or F# and the .NET framework. About the Author Anthony Brown is a .NET consultant specializing in F# and reactive systems. Table of Contents PART 1 THE ROAD TO REACTIVE Why reactive? Reactive application design PART 2 DIGGING IN Your first Akka.NET application State, behavior, and actors Configuration, dependency injection, and logging Failure handling Scaling in reactive systems Composing actor systems PART 3 REAL-LIFE USAGE Testing Akka.NET actors Integrating Akka.NET Storing actor state with Akka.Persistence Building clustered applications with Akka.Cluster Akka.NET and reactive programming in production |
| akka book: Reactive Messaging Patterns with the Actor Model Vaughn Vernon, 2015-07-13 USE THE ACTOR MODEL TO BUILD SIMPLER SYSTEMS WITH BETTER PERFORMANCE AND SCALABILITY Enterprise software development has been much more difficult and failure-prone than it needs to be. Now, veteran software engineer and author Vaughn Vernon offers an easier and more rewarding method to succeeding with Actor model. Reactive Messaging Patterns with the Actor Model shows how the reactive enterprise approach, Actor model, Scala, and Akka can help you overcome previous limits of performance and scalability, and skillfully address even the most challenging non-functional requirements. Reflecting his own cutting-edge work, Vernon shows architects and developers how to translate the longtime promises of Actor model into practical reality. First, he introduces the tenets of reactive software, and shows how the message-driven Actor model addresses all of them–making it possible to build systems that are more responsive, resilient, and elastic. Next, he presents a practical Scala bootstrap tutorial, a thorough introduction to Akka and Akka Cluster, and a full chapter on maximizing performance and scalability with Scala and Akka. Building on this foundation, you’ll learn to apply enterprise application and integration patterns to establish message channels and endpoints; efficiently construct, route, and transform messages; and build robust systems that are simpler and far more successful. Coverage Includes How reactive architecture replaces complexity with simplicity throughout the core, middle, and edges The characteristics of actors and actor systems, and how Akka makes them more powerful Building systems that perform at scale on one or many computing nodes Establishing channel mechanisms, and choosing appropriate channels for each application and integration challenge Constructing messages to clearly convey a sender’s intent in communicating with a receiver Implementing a Process Manager for your Domain-Driven Designs Decoupling a message’s source and destination, and integrating appropriate business logic into its router Understanding the transformations a message may experience in applications and integrations Implementing persistent actors using Event Sourcing and reactive views using CQRS Find unique online training on Domain-Driven Design, Scala, Akka, and other software craftsmanship topics using the for{comprehension} website at forcomprehension.com. |
| akka book: Reactive Web Applications Manuel Bernhardt, 2016-06-27 Summary Reactive Web Applications teaches web developers how to benefit from the reactive application architecture and presents hands-on examples using the Play framework. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Reactive applications build on top of components that communicate asynchronously as they react to user and system events. As a result, they become scalable, responsive, and fault-tolerant. Java and Scala developers can use the Play Framework and the Akka concurrency toolkit to easily implement reactive applications without building everything from scratch. About the Book Reactive Web Applications teaches web developers how to benefit from the reactive application architecture and presents hands-on examples using Play, Akka, Scala, and Reactive Streams. This book starts by laying out the fundamentals required for writing functional and asynchronous applications and quickly introduces Play as a framework to handle the plumbing of your application. The book alternates between chapters that introduce reactive ideas (asynchronous programming with futures and actors, managing distributed state with CQRS) and practical examples that show you how to build these ideas into your applications. What's Inside Reactive application architecture Basics of Play and Akka Examples in Scala Functional and asynchronous programming About Reader Description For readers comfortable programming with a higher-level language such as Java or C#, and who can read Scala code. No experience with Play or Akka needed. About the Author Manuel Bernhardt is a passionate engineer, author, and speaker. As a consultant, he guides companies through the technological and organizational transformation to distributed computing. Table of Contents PART 1 GETTING STARTED WITH REACTIVE WEB APPLICATIONS Did you say reactive? Your first reactive web application Functional programming primer Quick introduction to Play PART 2 CORE CONCEPTS Futures Actors Dealing with state Responsive user interfaces PART 3 ADVANCED TOPICS Reactive Streams Deploying reactive Play applications Testing reactive web applications |
| akka book: Reactive Application Development Duncan DeVore, Sean Walsh, Brian Hanafee, 2018-07-08 Summary Reactive Application Development is a hands-on guide that teaches you how to build reliable enterprise applications using reactive design patterns. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. Foreword by Jonas Bonér, Creator of Akka About the Technology Mission-critical applications have to respond instantly to changes in load, recover gracefully from failure, and satisfy exacting requirements for performance, cost, and reliability. That's no small task! Reactive designs make it easier to meet these demands through modular, message-driven architecture, innovative tooling, and cloud-based infrastructure. About the Book Reactive Application Development teaches you how to build reliable enterprise applications using reactive design patterns. This hands-on guide begins by exposing you to the reactive mental model, along with a survey of core technologies like the Akka actors framework. Then, you'll build a proof-of-concept system in Scala, and learn to use patterns like CQRS and Event Sourcing. You'll master the principles of reactive design as you implement elasticity and resilience, integrate with traditional architectures, and learn powerful testing techniques. What's Inside Designing elastic domain models Building fault-tolerant systems Efficiently handling large data volumes Examples can be built in Scala or Java About the Reader Written for Java or Scala programmers familiar with distributed application designs. About the Author Duncan DeVore, Sean Walsh, and Brian Hanafee are seasoned architects with experience building and deploying reactive systems in production. Table of Contents PART 1 - FUNDAMENTALS What is a reactive application? Getting started with Akka Understanding Akka PART 2 - BUILDING A REACTIVE APPLICATION Mapping from domain to toolkit Domain-driven design Using remote actors Reactive streaming CQRS and Event Sourcing A reactive interface Production readiness |
| akka book: Applied Akka Patterns Michael Nash, Wade Waldron, 2016-12-12 When it comes to big data processing, we can no longer ignore concurrency or try to add it in after the fact. Fortunately, the solution is not a new paradigm of development, but rather an old one. With this hands-on guide, Java and Scala developers will learn how to embrace concurrent and distributed applications with the open source Akka toolkit. You’ll learn how to put the actor model and its associated patterns to immediate and practical use. Throughout the book, you’ll deal with an analogous workforce problem: how to schedule a group of people across a variety of projects while optimizing their time and skillsets. This example will help you understand how Akka uses actors, streams, and other tools to stitch your application together. Model software that reflects the real world with domain-driven design Learn principles and practices for implementing individual actors Unlock the real potential of Akka with patterns for combining multiple actors Understand the consistency tradeoffs in a distributed system Use several Akka methods for isolating and dealing with failures Explore ways to build systems that support availability and scalability Tune your Akka application for performance with JVM tools and dispatchers |
| akka book: Mastering Akka Christian Baxter, 2016-10-21 Master the art of creating scalable, concurrent, and reactive applications using Akka About This Book This book will help you cure anemic models with domain-driven design We cover major Akka programming concepts such as concurrency, scalability, and reactivity You will learn concepts like Event Sourcing and CQRS via Akka Persistence, Akka Streams, Akka Http as well as Akka Clustering Who This Book Is For If you want to use the Lightbend platform to create highly performant reactive applications, then this book is for you. If you are a Scala developer looking for techniques to use all features of the new Akka release and want to incorporate these solutions in your current or new projects, then this book is for you. Expert Java developers who want to build scalable, concurrent, and reactive application will find this book helpful. What You Will Learn Use Akka actors to enable parallel execution Build out domain-driven design based components like entities and aggregates Respond to command requests on that aggregate root that affect the internal state Leverage Akka Persistence, protobuf and Cassandra to save the persistent state of you entities Build out complex processing graphs with the Graph Builder DSL Understand the dynamic push/pull nature of backpressure handling within Akka Streams Route HTTP requests to an actor and return a response Deploy actor instances across a set of nodes via ConductR for high availability In Detail For a programmer, writing multi-threaded applications is critical as it is important to break large tasks into smaller ones and run them simultaneously. Akka is a distributed computing toolkit that uses the abstraction of the Actor model, enabling developers to build correct, concurrent, and distributed applications using Java and Scala with ease. The book begins with a quick introduction that simplifies concurrent programming with actors. We then proceed to master all aspects of domain-driven design. We'll teach you how to scale out with Akka Remoting/Clustering. Finally, we introduce Conductr as a means to deploy to and manage microservices across a cluster. Style and approach This comprehensive, fast-paced guide is packed with several real-world use cases that will help you understand concepts, issues, and resolutions while using Akka to create highly performant, scalable, and concurrency-proof reactive applications. |
| akka book: Akka Essentials Munish K. Gupta, 2012 This is a step-by-step guide where each chapter will teach you a concept by explaining it with clear and lucid examples– each chapter can be read independently. This book is aimed at developers, architects who are building large distributed concurrent and scalable applications using Java/Scala. The book assumes knowledge of Java/JEE concepts but no knowledge of Actor model is assumed. |
| akka book: Akka Cookbook Hector Veiga Ortiz, Piyush Mishra, 2017-05-26 Learn how to use the Akka framework to build effective applications in Scala About This Book Covers a discussion on Lagom—the newest launched Akka framework that is built to create complex microservices easily The recipe approach of the book allows the reader to know important and independent concepts of Scala and Akka in a seamless manner Provides a comprehensive understanding of the Akka actor model and implementing it to create reactive web applications Who This Book Is For If you are a Scala developer who wants to build scalable and concurrent applications, then this book is for you. Basic knowledge of Akka will help you take advantage of this book. What You Will Learn Control an actor using the ContolAware mailbox Test a fault-tolerant application using the Akka test kit Create a parallel application using futures and agents Package and deploy Akka application inside Docker Deploy remote actors programmatically on different nodes Integrate Streams with Akka actors Install Lagom and create a Lagom project In Detail Akka is an open source toolkit that simplifies the construction of distributed and concurrent applications on the JVM. This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka. You will see how to create high performance applications, extend applications, build microservices with Lagom, and more. We will explore Akka's actor model and show you how to incorporate concurrency into your applications. The book puts a special emphasis on performance improvement and how to make an application available for users. We also make a special mention of message routing and construction. By the end of this book, you will be able to create a high-performing Scala application using the Akka framework. Style and approach This highly practical recipe-based approach will allow you to build scalable, robust, and reactive applications using the Akka framework. |
| akka book: Scala Reactive Programming Rambabu Posa, 2018-02-28 Build fault-tolerant, robust, and distributed applications in Scala Key Features - Understand and use the concepts of reactive programming to build distributed systems running on multiple nodes. - Learn how reactive architecture reduces complexity throughout the development process. - Get to grips with functional reactive programming and Reactive Microservices. Book Description Reactive programming is a scalable, fast way to build applications, and one that helps us write code that is concise, clear, and readable. It can be used for many purposes such as GUIs, robotics, music, and others, and is central to many concurrent systems. This book will be your guide to getting started with Reactive programming in Scala. You will begin with the fundamental concepts of Reactive programming and gradually move on to working with asynchronous data streams. You will then start building an application using Akka Actors and extend it using the Play framework. You will also learn about reactive stream specifications, event sourcing techniques, and different methods to integrate Akka Streams into the Play Framework. This book will also take you one step forward by showing you the advantages of the Lagom framework while working with reactive microservices. You will also learn to scale applications using multi-node clusters and test, secure, and deploy your microservices to the cloud. By the end of the book, you will have gained the knowledge to build robust and distributed systems with Scala and Akka. What you will learn Understand the fundamental principles of Reactive and Functional programming Develop applications utilizing features of the Akka framework Explore techniques to integrate Scala, Akka, and Play together Learn about Reactive Streams with real-time use cases Develop Reactive Web Applications with Play, Scala, Akka, and Akka Streams Develop and deploy Reactive microservices using the Lagom framework and ConductR Who this book is for This book is for Scala developers who would like to build fault-tolerant, scalable distributed systems. No knowledge of Reactive programming is required. |
| akka book: Memories of Nine Years in ʻAkká Youness Afroukhteh, Yūnus Afrūkhtah, 2003 |
| akka book: Reactive Streams in Java Adam L. Davis, 2018-11-29 Get an easy introduction to reactive streams in Java to handle concurrency, data streams, and the propagation of change in today's applications. This compact book includes in-depth introductions to RxJava, Akka Streams, and Reactor, and integrates the latest related features from Java 9 and 11, as well as reactive streams programming with the Android SDK. Reactive Streams in Java explains how to manage the exchange of stream data across an asynchronous boundary—passing elements on to another thread or thread-pool—while ensuring that the receiving side is not forced to buffer arbitrary amounts of data which can reduce application efficiency. After reading and using this book, you'll be proficient in programming reactive streams for Java in order to optimize application performance, and improve memory management and data exchanges. What You Will Learn Discover reactive streamsand how to use them Work with the latest features in Java 9 and Java 11 Apply reactive streams using RxJava Program using Akka Streams Carry out reactive streams programming in Android Who This Book Is For Experienced Java programmers. |
| akka book: Learning Akka Jason Goodwin, 2015 Build fault tolerant concurrent and distributed applications with AkkaAbout This Book- Build networked applications that self-heal- Scale out your applications to handle more traffic faster- An easy-to-follow guide with a number of examples to ensure you get the best start with AkkaWho This Book Is ForThis book is intended for beginner to intermediate Java or Scala developers who want to build applications to serve the high-scale user demands in computing today. If you need your applications to handle the ever-growing user bases and datasets with high performance demands, then this book is for you. Learning Akka will let you do more for your users with less code and less complexity, by building and scaling your networked applications with ease.What You Will Learn- Use Akka to overcome the challenges of concurrent programming- Resolve the issues faced in distributed computing with the help of Akka- Scale applications to serve a high number of concurrent users- Make your system fault-tolerant with self-healing applications- Provide a timely response to users with easy concurrency- Reduce hardware costs by building more efficient multi-user applications- Maximise network efficiency by scaling itIn DetailSoftware today has to work with more data, more users, more cores, and more servers than ever. Akka is a distributed computing toolkit that enables developers to build correct concurrent and distributed applications using Java and Scala with ease, applications that scale across servers and respond to failure by self-healing. As well as simplifying development, Akka enables multiple concurrency development patterns with particular support and architecture derived from Erlang's concept of actors (lightweight concurrent entities). Akka is written in Scala, which has become the programming language of choice for development on the Akka platform.Learning Akka aims to be a comprehensive walkthrough of Akka. This book will take you on a journey through all the concepts of Akka that you need in order to get started with concurrent and distributed applications and even build your own.Beginning with the concept of Actors, the book will take you through concurrency in Akka. Moving on to networked applications, this book will explain the common pitfalls in these difficult problem areas while teaching you how to use Akka to overcome these problems with ease.The book is an easy to follow example-based guide that will strengthen your basic knowledge of Akka and aid you in applying the same to real-world scenarios.Style and approachAn easy-to-follow, example-based guide that will take you through building several networked-applications that work together while you are learning concurrent and distributed computing concepts. Each topic is explained while showing you how to design with Akka and how it is used to overcome common problems in applications. By showing Akka in context to the problems, it will help you understand what the common problems are in distributed applications and how to overcome them. |
| akka book: Big Data SMACK Raul Estrada, Isaac Ruiz, 2016-09-29 Learn how to integrate full-stack open source big data architecture and to choose the correct technology—Scala/Spark, Mesos, Akka, Cassandra, and Kafka—in every layer. Big data architecture is becoming a requirement for many different enterprises. So far, however, the focus has largely been on collecting, aggregating, and crunching large data sets in a timely manner. In many cases now, organizations need more than one paradigm to perform efficient analyses. Big Data SMACK explains each of the full-stack technologies and, more importantly, how to best integrate them. It provides detailed coverage of the practical benefits of these technologies and incorporates real-world examples in every situation. This book focuses on the problems and scenarios solved by the architecture, as well as the solutions provided by every technology. It covers the six main concepts of big data architecture and how integrate, replace, and reinforce every layer: The language: Scala The engine: Spark (SQL, MLib, Streaming, GraphX) The container: Mesos, Docker The view: Akka The storage: Cassandra The message broker: Kafka What You Will Learn: Make big data architecture without using complex Greek letter architectures Build a cheap but effective cluster infrastructure Make queries, reports, and graphs that business demands Manage and exploit unstructured and No-SQL data sources Use tools to monitor the performance of your architecture Integrate all technologies and decide which ones replace and which ones reinforce Who This Book Is For: Developers, data architects, and data scientists looking to integrate the most successful big data open stack architecture and to choose the correct technology in every layer |
| akka book: Sky-clad Mukunda Rao, 2018 |
| akka book: Learn Scala Programming Slava Schmidt, 2018-10-31 A step-by-step guide in building high-performance scalable applications with the latest features of Scala. Key FeaturesDevelop a strong foundation in functional programming and Scala's Standard Library (STL)Get a detailed coverage of Lightbend Lagom—the latest microservices framework from LightbendUnderstand the Akka framework and learn event-based Programming with Scala Book Description The second version of Scala has undergone multiple changes to support features and library implementations. Scala 2.13, with its main focus on modularizing the standard library and simplifying collections, brings with it a host of updates. Learn Scala Programming addresses both technical and architectural changes to the redesigned standard library and collections, along with covering in-depth type systems and first-level support for functions. You will discover how to leverage implicits as a primary mechanism for building type classes and look at different ways to test Scala code. You will also learn about abstract building blocks used in functional programming, giving you sufficient understanding to pick and use any existing functional programming library out there. In the concluding chapters, you will explore reactive programming by covering the Akka framework and reactive streams. By the end of this book, you will have built microservices and learned to implement them with the Scala and Lagom framework. What you will learnAcquaint yourself with the new standard library of Scala 2.13Get to grips with the Grok functional paradigmsGet familiar with type system to express domain constraintsUnderstand the actor model and different Akka librariesGrasp the concept of building microservices using Lagom frameworkDeep dive into property-based testing and its practical applicationsWho this book is for This book is for beginner to intermediate level Scala developers who would like to advance and gain knowledge of the intricacies of the Scala language, expand their functional programming tools, and explore actor-based concurrency models. |
| akka book: Tell it to the Trees Anita Rau Badami, 2011 Anu Krishnan, seeking refuge from city life, becomes a tenant of the seemingly happy, tightly-knit Dharma family in a small northern town in B.C. But the Dharma family holds secrets which begin to spill out, brought on by Anu's presence, and leading to tragic consequences.! |
| akka book: Rx.NET in Action Tamir Dresher, 2017-04-20 Summary Rx.NET in Action teaches developers how to build event-driven applications using the Reactive Extensions (Rx) library. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Modern applications must react to streams of data such as user and system events, internal messages, and sensor input. Reactive Extensions (Rx) is a .NET library containing more than 600 operators that you can compose together to build reactive client- and server-side applications to handle events asynchronously in a way that maximizes responsiveness, resiliency, and elasticity. About the Book Rx.NET in Action teaches developers how to build event-driven applications using the Rx library. Starting with an overview of the design and architecture of Rx-based reactive applications, you'll get hands-on with in-depth code examples to discover firsthand how to exploit the rich query capabilities that Rx provides and the Rx concurrency model that allows you to control both the asynchronicity of your code and the processing of event handlers. You'll also learn about consuming event streams, using schedulers to manage time, and working with Rx operators to filter, transform, and group events. What's Inside Introduction to Rx in C# Creating and consuming streams of data and events Building complex queries on event streams Error handling and testing Rx code About the Reader Readers should understand OOP concepts and be comfortable coding in C#. About the Author Tamir Dresher is a senior software architect at CodeValue and a prominent member of Israel's Microsoft programming community. Table of Contents PART 1 - GETTING STARTED WITH REACTIVE EXTENSIONS Reactive programming Hello, Rx Functional thinking in C# PART 2 - CORE IDEAS Creating observable sequences Creating observables from .NET asynchronous types Controlling the observer-observable relationship Controlling the observable temperature Working with basic query operators Partitioning and combining observables Working with Rx concurrency and synchronization Error handling and recovery APPENDIXES Writing asynchronous code in .NET The Rx Disposables library Testing Rx queries and operators |
| akka book: Scala Cookbook Alvin Alexander, 2013-08 Save time and trouble when using Scala to build object-oriented, functional, and concurrent applications. With more than 250 ready-to-use recipes and 700 code examples, this comprehensive cookbook covers the most common problems you’ll encounter when using the Scala language, libraries, and tools. It’s ideal not only for experienced Scala developers, but also for programmers learning to use this JVM language. Author Alvin Alexander (creator of DevDaily.com) provides solutions based on his experience using Scala for highly scalable, component-based applications that support concurrency and distribution. Packed with real-world scenarios, this book provides recipes for: Strings, numeric types, and control structures Classes, methods, objects, traits, and packaging Functional programming in a variety of situations Collections covering Scala's wealth of classes and methods Concurrency, using the Akka Actors library Using the Scala REPL and the Simple Build Tool (SBT) Web services on both the client and server sides Interacting with SQL and NoSQL databases Best practices in Scala development |
| akka book: Reactive Programming with Scala and Akka Prasanna Kumar Sathyanarayanan, Suraj Atreya, 2016-02-29 Harness reactive programming to build scalable and fault-tolerant distributed systems using Scala and AkkaAbout This Book- Use the concepts of reactive programming to build distributed systems running on multiple nodes- Get to grips with the full range of Akka features including the upcoming and cutting edge experimental modules- A comprehensive coverage of the principles of FRP with real-world use cases to solve scalability issues Who This Book Is ForIf you are a developer who is passionate about building fault-tolerant, scalable distributed applications using Scala and Akka, then this book will give you a jump start. You should be familiar with Scala, but no prior knowledge of Akka and reactive programming is required.What You Will Learn- Explore functional programming using Scala- Design an asynchronous, non-blocking shopping cart application using Futures- Understand the Akka actor model and the relationship between actors and threads- Use the Actor Supervision feature to build a fault tolerant and resilient application- Create your own distributed system framework using an Akka cluster- Take a look under the hood to gain perspective on the Akka engine- See a comprehensive case study of a key value store with concurrent reads and writes- Model a finite state machine using state-driven actorsIn DetailToday's web-based applications need to scale quickly to tackle the demands of modern users. Reactive programming is the solution developed to ensure the fault tolerant and robust scaling that is essential for professional applications. Reactive programming in Scala and Akka provides a great platform to develop low latency resilient, concurrent Internet scale applications on the Java Virtual Machine.This comprehensive guide will help you get to grips with the concepts of reactive programming in order to build a robust distributed system in Scala and Akka. Written in two parts, you will first take a walkthrough of the reactive, asynchronous, and functional concepts in Scala before focusing on Akka and getting to grips with the details of real-world use cases.Begin with an introduction into functional reactive programming, before moving on to writing asynchronous application with non-blocking constructs in Scala. Get familiar with the concept of actor-based concurrency using Akka, and features such as Akka remoting, routing, and persistence capabilities to build distributed applications. Learn to scale applications using a multi-node Akka cluster and unit test Akka actors and get to grips with state machines and how to implement state-driven actors using Akka. Finally, put your skills to the test with a case study where you will concurrently and asynchronously store and retrieve data from a key value store. By progressively working through the Akka concepts, you will not only be able to write your own distributed system, but also appreciate the hidden complexity within the Akka ecosystem.Style and approachThis comprehensive guide walks you through the basics of reactive programming in Scala and Akka, explaining some of the most frequently used constructs to the most advanced features, and taking you through building a full-blown distributed system with the help of real-world examples. |
| akka book: Aka Mahadevi , 2019 |
| akka book: Multi-faceted Deep Learning Jenny Benois-Pineau, Akka Zemmari, 2021-10-20 This book covers a large set of methods in the field of Artificial Intelligence - Deep Learning applied to real-world problems. The fundamentals of the Deep Learning approach and different types of Deep Neural Networks (DNNs) are first summarized in this book, which offers a comprehensive preamble for further problem–oriented chapters. The most interesting and open problems of machine learning in the framework of Deep Learning are discussed in this book and solutions are proposed. This book illustrates how to implement the zero-shot learning with Deep Neural Network Classifiers, which require a large amount of training data. The lack of annotated training data naturally pushes the researchers to implement low supervision algorithms. Metric learning is a long-term research but in the framework of Deep Learning approaches, it gets freshness and originality. Fine-grained classification with a low inter-class variability is a difficult problem for any classification tasks. This book presents how it is solved, by using different modalities and attention mechanisms in 3D convolutional networks. Researchers focused on Machine Learning, Deep learning, Multimedia and Computer Vision will want to buy this book. Advanced level students studying computer science within these topic areas will also find this book useful. |
| akka book: Akka, My Mother Ashok Vyankatesh Havaldar, 2015-03-01 Emotions and language....! Are there any specifications to express emotions? In terms of emotions, it's an expressive language. All the emotions are the same irrespective of cast, race, religion and more importantly languages. It's a universal language. The face, the eyes and the lips are the media to reach one's heart and mind. Expression is the best mirror of any thought or emotion. The other term of the same category is 'Feelings'. It is more expressive. To feel means to understand or experience by heart and mind. Music is also related with emotions. I heard a lot of music since my childhood. I hardly remember the lyrics but can't forget the music. The violin piece used in 'Kaheta hai babul...' sung by Amitjee is close to my heart. 'Rang dilki dhadkan...' an old number sung by Latajee. This is the emotional music. I would like to share an experience of a Japanese movie 'Midnight Sun', without any subtitles. It touched me because of the emotionalize characters. I involved in the movie without understanding a single word. When I decided to write Akka's story, I never thought about the language but the emotions of it. My sincere wish was to reach the maximum people. I recalled my teacher. He used to say 'read in between two lines'. When I wrote the story and felt its tender feel not in the words but in the blank spaces. The big question how to take the readers to these blank spaces of emotions? While transforming emotions in to words two things emerged. Number one 'emotions' never err. Number two the 'words' may err. Just imagine what would be the fate of the mankind without emotions? Every act was expressive. The expressive emotions converted in languages. But the base of every language is none other than the 'emotion'. Which language was used by Mother Teresa who lapped the innocent orphan for the first time? Was it Bengali, Hindi or English? Her angel's work never faced this language problem. The tender touch of her palm brought a smile on the face of an innocent child. All the five senses of a human being work to teach love, peace and harmony. How Akka faced the totally different atmosphere in the father in law family? The language was never been an obstacle to her. Then why we are worried about the language? Let's feel it. The two beautiful mothers will guide us. Don't stop the stream of 'E M O T I O N S.' Let it flow. Please enter in the characters and be a part of this story of 103 years. It is simple, readable and emotional. Experience it. |
| akka book: Songs for Siva: Vinaya Chaitanya, 2017-03-20 Hailed as early feminist literary voice, Akka Mahadevi was born in the twelfth-century in the southwest Indian province of Karnatka. As a child she was initiated into the worship of Channamallikarjuna (translated here as 'jasmine-tender'), her village's version of Siva. She was forced to marry her region's ruler. But because she was devoted only to Siva, she left her husband and all her possessions including her clothes, and wandered a naked poet-saint covered only by her long hair. Her vacanas a new populist literary form meaning literally 'to give one's word' collected here demonstrate both her radical devotion to Siva and the radical commitment to equality for her the vira-saiva movement she joined. |
| akka book: Building Event-Driven Microservices Adam Bellemare, 2020-07-02 Organizations today often struggle to balance business requirements with ever-increasing volumes of data. Additionally, the demand for leveraging large-scale, real-time data is growing rapidly among the most competitive digital industries. Conventional system architectures may not be up to the task. With this practical guide, you’ll learn how to leverage large-scale data usage across the business units in your organization using the principles of event-driven microservices. Author Adam Bellemare takes you through the process of building an event-driven microservice-powered organization. You’ll reconsider how data is produced, accessed, and propagated across your organization. Learn powerful yet simple patterns for unlocking the value of this data. Incorporate event-driven design and architectural principles into your own systems. And completely rethink how your organization delivers value by unlocking near-real-time access to data at scale. You’ll learn: How to leverage event-driven architectures to deliver exceptional business value The role of microservices in supporting event-driven designs Architectural patterns to ensure success both within and between teams in your organization Application patterns for developing powerful event-driven microservices Components and tooling required to get your microservice ecosystem off the ground |
| akka book: Play for Scala Peter Hilton, Erik Bakker, Francisco Canedo, 2013-10-14 Summary Play for Scala shows you how to build Scala-based web applications using the Play 2 framework. This book starts by introducing Play through a comprehensive overview example. Then, you'll look at each facet of a typical Play application both by exploring simple code snippets and by adding to a larger running example. Along the way, you'll deepen your knowledge of Scala as a programming language and work with tools like Akka. About this Book Play is a Scala web framework with built-in advantages: Scala's strong type system helps deliver bug-free code, and the Akka framework helps achieve hassle-free concurrency and peak performance. Play builds on the web's stateless nature for excellent scalability, and because it is event-based and nonblocking, you'll find it to be great for near real-time applications. Play for Scala teaches you to build Scala-based web applications using Play 2. It gets you going with a comprehensive overview example. It then explores each facet of a typical Play application by walking through sample code snippets and adding features to a running example. Along the way, you'll deepen your knowledge of Scala and learn to work with tools like Akka. Written for readers familiar with Scala and web-based application architectures. No knowledge of Play is assumed. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. What's Inside Intro to Play 2 Play's MVC structure Mastering Scala templates and forms Persisting data and using web services Using Play's advanced features About the Authors Peter Hiltonv, Erik Bakker, and Francisco Canedo, are engineers at Lunatech, a consultancy with Scala and Play expertise. They are contributors to the Play framework. Table of Contents PART 1: GETTING STARTED Introduction to Play Your first Play application PART 2: CORE FUNCTIONALITY Deconstructing Play application architecture Defining the application's HTTP interface Storing data—the persistence layer Building a user interface with view templates Validating and processing input with the forms API PART 3: ADVANCED CONCEPTS Building a single-page JavaScript application with JSON Play and more Web services, iteratees, and WebSockets |
| akka book: Machine Learning Systems Jeffrey Smith, 2018-05-21 Summary Machine Learning Systems: Designs that scale is an example-rich guide that teaches you how to implement reactive design solutions in your machine learning systems to make them as reliable as a well-built web app. Foreword by Sean Owen, Director of Data Science, Cloudera Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology If you’re building machine learning models to be used on a small scale, you don't need this book. But if you're a developer building a production-grade ML application that needs quick response times, reliability, and good user experience, this is the book for you. It collects principles and practices of machine learning systems that are dramatically easier to run and maintain, and that are reliably better for users. About the Book Machine Learning Systems: Designs that scale teaches you to design and implement production-ready ML systems. You'll learn the principles of reactive design as you build pipelines with Spark, create highly scalable services with Akka, and use powerful machine learning libraries like MLib on massive datasets. The examples use the Scala language, but the same ideas and tools work in Java, as well. What's Inside Working with Spark, MLlib, and Akka Reactive design patterns Monitoring and maintaining a large-scale system Futures, actors, and supervision About the Reader Readers need intermediate skills in Java or Scala. No prior machine learning experience is assumed. About the Author Jeff Smith builds powerful machine learning systems. For the past decade, he has been working on building data science applications, teams, and companies as part of various teams in New York, San Francisco, and Hong Kong. He blogs (https: //medium.com/@jeffksmithjr), tweets (@jeffksmithjr), and speaks (www.jeffsmith.tech/speaking) about various aspects of building real-world machine learning systems. Table of Contents PART 1 - FUNDAMENTALS OF REACTIVE MACHINE LEARNING Learning reactive machine learning Using reactive tools PART 2 - BUILDING A REACTIVE MACHINE LEARNING SYSTEM Collecting data Generating features Learning models Evaluating models Publishing models Responding PART 3 - OPERATING A MACHINE LEARNING SYSTEM Delivering Evolving intelligence |
| akka book: Scala in Action Nilanjan Raychaudhuri, 2013-04-08 Summary Scala in Action is a comprehensive tutorial that introduces Scala through clear explanations and numerous hands-on examples. Because Scala is a rich and deep language, it can be daunting to absorb all the new concepts at once. This book takes a how-to approach, explaining language concepts as you explore familiar programming challenges that you face in your day-to-day work. About the Technology Scala runs on the JVM and combines object-orientation with functional programming. It's designed to produce succinct, type-safe code, which is crucial for enterprise applications. Scala implements Actor-based concurrency through the amazing Akka framework, so you can avoid Java's messy threading while interacting seamlessly with Java. About this Book Scala in Action is a comprehensive tutorial that introduces the language through clear explanations and numerous hands-on examples. It takes a how to approach, explaining language concepts as you explore familiar programming tasks. You'll tackle concurrent programming in Akka, learn to work with Scala and Spring, and learn how to build DSLs and other productivity tools. You'll learn both the language and how to use it. Experience with Java is helpful but not required. Ruby and Python programmers will also find this book accessible. What's Inside A Scala tutorial How to use Java and Scala open source libraries How to use SBT Test-driven development Debugging Updated for Scala 2.10 Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Author Nilanjan Raychaudhuri is a skilled developer, speaker, and an avid polyglot programmer who works with Scala on production systems. Table of Contents PART 1 SCALA: THE BASICS Why Scala? Getting started OOP in Scala Having fun with functional data structures Functional programming PART 2 WORKING WITH SCALA Building web applications in functional style Connecting to a database Building scalable and extensible components Concurrency programming in Scala Building confidence with testing PART 3 ADVANCED STEPS Interoperability between Scala and Java Scalable and distributed applications using Akka |
| akka book: Chitti’s Travelling Book Box (hOle Book) Kavitha Punniyamurthi, 2023-02-20 Chitti loves reading. But there are just not enough books in her village and some of her friends think they are boring! Can Chitti make them change their minds? |
| akka book: Pillars of Light Jane Johnson, 2016-01-05 Diana Gabaldon meets Ken Follett in this epic story of love, war and redemption. In the Syrian city of Akka, Nathanael, a young Jewish doctor, and a Muslim girl called Zohra are about to fall in love, unaware that Jerusalem has just been taken by Saladin's army and that their city will soon be engulfed by war. Meanwhile in England, John Savage, a foundling boy, runs away from his cruel life in a priory with The Moor, a mysterious man driven by a dream of perfection. John and The Moor become members of a band of conmen travelling through the English countryside faking religious miracles for cash, until they are recruited in Richard the Lionheart's drive to regain the Latin Kingdom from the infidel. Akka awaits. It will be the site of the greatest--and cruellest--siege of its time. But even in the midst of war, lovers find ways to make transactions of beauty. Pillars of Light is a powerful and moving novel about the triumph of the human spirit against all the odds. It will delight fans of Philippa Gregory, Ken Follett and Diana Gabaldon. |
| akka book: The Teenage Diary of Abbakka Kavitha Mandana, 2021-02 Description The Chowtas ruled over Ullal and surrounding areas of coastal Karnataka. Many rulers in this dynasty were women, and at least two carried the name Rani Abbakka. They have gone down in history and folklore as fearsome warriors who fiercely defended their tiny kingdom, and repeatedly defeated the Portuguese. This is the story of Abbakka III. Abbakka grows up knowing she will rule over the kingdom one day-the one that was ruled by her grandmother Abbakka II and her mother Rani Tirumala Devi. Abbakka trains with all her heart in everything a queen needs to know, and never tires of hearing the tales of sea battles that her grandmother waged against the firangis. But Abbakka is also a young girl who loves adventure. She sets out on dangerous missions to track down spies on the seas. She accompanies her mother in a secret plan to outwit the Portuguese as they try to capture the kingdom's precious pepper crop. And then there is the handsome, mysterious boy from Mangalore, who she likes enormously... Steeped in the culture and history of the region, The Teenage Diary of Abbakka is the fictional diary of an unusual girl growing up during an exciting time-a girl who would eventually go to any lengths to protect and defend her kingdom. |
| akka book: The Ultimate Book Club: 180 Books You Should Read (Vol.1) Jules Verne, Lewis Carroll, Selma Lagerlöf, Sigmund Freud, Charles Dickens, Plato, Mark Twain, Walt Whitman, Oscar Wilde, Robert Louis Stevenson, Edgar Allan Poe, William Shakespeare, Giovanni Boccaccio, Charlotte Brontë, Anne Brontë, Emily Brontë, Henry David Thoreau, Jack London, Henry James, Louisa May Alcott, Victor Hugo, Arthur Conan Doyle, Frances Hodgson Burnett, Joseph Conrad, Jane Austen, Edgar Rice Burroughs, Herman Melville, James Allen, Guy de Maupassant, George Eliot, Thomas Hardy, Benito Pérez Galdós, Daniel Defoe, Agatha Christie, Upton Sinclair, Anthony Trollope, Alexandre Dumas, Rudyard Kipling, Marcel Proust, Washington Irving, Juan Valera, Charles Baudelaire, William Makepeace Thackeray, Theodore Dreiser, Voltaire, Apuleius, Stephen Crane, Frederick Douglass, John Keats, James Joyce, Kahlil Gibran, Ernest Hemingway, Soseki Natsume, Princess Der Ling, L. Frank Baum, H. G. Wells, H. A. Lorentz, T. S. Eliot, D. H. Lawrence, E. M. Forster, H. P. Lovecraft, Marcus Aurelius, Hans Christian Andersen, Anton Chekhov, Leo Tolstoy, Fyodor Dostoevsky, Sir Walter Scott, George Bernard Shaw, Miguel de Cervantes, Mary Shelley, Wallace D. Wattles, R.D. Blackmore, Pierre Choderlos de Laclos, Johann Wolfgang Goethe, Margaret Cavendish, Herman Hesse, Sun Tzu, Gogol, 2023-11-15 This summer, during these strange strange times, immerse yourself in words that have touched all of us and will always get to the core of all of us, of every single person. Books that have made us think, change, relate, cry and laugh: Leaves of Grass (Walt Whitman) Siddhartha (Herman Hesse) Middlemarch (George Eliot) The Madman (Kahlil Gibran) Ward No. 6 (Anton Chekhov) Moby-Dick (Herman Melville) The Picture of Dorian Gray (Oscar Wilde) Crime and Punishment (Dostoevsky) The Overcoat (Gogol) Ulysses (James Joyce) Walden (Henry David Thoreau) Hamlet (Shakespeare) Romeo and Juliet (Shakespeare) Macbeth (Shakespeare) The Waste Land (T. S. Eliot) Odes (John Keats) The Flowers of Evil (Charles Baudelaire) Pride and Prejudice (Jane Austen) Jane Eyre (Charlotte Brontë) Wuthering Heights (Emily Brontë) Anna Karenina (Leo Tolstoy) Vanity Fair (Thackeray) Swann's Way (Marcel Proust) Sons and Lovers (D. H. Lawrence) Great Expectations (Charles Dickens) Little Women (Louisa May Alcott) Jude the Obscure (Thomas Hardy) Two Years in the Forbidden City (Princess Der Ling) Les Misérables (Victor Hugo) The Count of Monte Cristo (Alexandre Dumas) Pepita Jimenez (Juan Valera) The Red Badge of Courage (Stephen Crane) A Room with a View (E. M. Forster) Sister Carrie (Theodore Dreiser) The Jungle (Upton Sinclair) The Republic (Plato) Meditations (Marcus Aurelius) Art of War (Sun Tzu) Candide (Voltaire) Don Quixote (Cervantes) Decameron (Boccaccio) Narrative of the Life of Frederick Douglass Dream Psychology (Sigmund Freud) The Einstein Theory of Relativity The Mysterious Affair at Styles (Agatha Christie) A Study in Scarlet (Arthur Conan Doyle) Heart of Darkness (Joseph Conrad) The Call of Cthulhu (H. P. Lovecraft) Frankenstein (Mary Shelley) The War of the Worlds (H. G. Wells) The Raven (Edgar Allan Poe) The Sun Also Rises (Ernest Hemingway) The Wonderful Wizard of Oz The Adventures of Huckleberry Finn The Call of the Wild Alice in Wonderland The Fairytales of Brothers Grimm The Fairytales of Hans Christian Andersen |
| akka book: The Book of Reykjavik Frida Isberg, Parkinson JULIUSDOTTIR, Agust Borgthor Sverrisson, Fridgeir Einarsson, Kristin Eiriksdottir, Thorarinn Eldjarn, Einar Mar Gudmundsson, Bjorn Halldorsson, Audur Jonsdottir, Gudrun Eva Minervudottir, Andri Snaer Magnason, 2021-07-08 Reykjavik, on the coast of Iceland, is known for its striking architecture, Viking heritage and volcanic activity, Reykjavik attracts a constant stream of visitors all year round to a diminuitive capital city that is home to more than half of Iceland's population. Icelanders hold their writers and poets in the same regard as the kings, queens and heroes of their mythic past, and have a deep-rooted love of literature. It is said every Icelander has a story up their sleeve. Here we have gathered ten short stories by ten Icelandic authors which captures this vibrant, modern city that is brimming with creative energy, and unearth the cosmopolitan metropolis hiding in the guise of a small-town fishing village. Includes a foreword written by award-winning Icelandic author Sjón.Translated from the Icelandic by Victoria Cribb, Philip Roughton, Lytton Smith, Meg Maitch and Larissa Kyzer.Published with the support of the Icelandic Literature Center. |
| akka book: Pragmatic Scala Venkat Subramaniam, 2015 |
| akka book: The Chosen Highway Sara Lady Blomfield, 2018-11-25 'I am walking my chosen highway. I know the destination.' 'Abdu'l-Bahá Sara, Lady Blomfield began to take written notes of the 'spoken chronicles' of the ladies of the Family of Bahá'ú'lláh during her first visit to Haifa in 1922. |
| akka book: Dates.sites Madhusree Dutta, 2012 dates.sites presents a timeline of the city of Bombay/Mumbai in the 20th century, anchored to its most adored public institution: cinema. Why this timeline when it is now generally accepted that dates are rigid and memories porous - and that the latter needs to be prioritized over the former? How does one create a timeline that is neither cast in stone nor vulnerable to the charge of 'manufacturing a past'? How does one evolve a timeline for a geographically defined entity in the context of its popular cultures that are defined by specific processes of production and distribution? These were some of the challenges that confronted the making of this volume. The volume is divided into sections by decades, and the decades in turn are separated by a series of calendars designed by artists, filmmakers, and designers. The text is a stitching together of found information and received knowledge from formal/informal, acknowledged/discarded sources. It is layered with images from either the public domain or personal archives. The relationship between text and image, far from being umbilical, is playfully associative. Just as contemporary readings are incorporated with dated markers in the written text, in the image text too, contemporary works are inserted alongside period images -and these incorporations and insertions appear with detectable joint-marks, in order to snap the spell of 'snippets from the past'. dates.sites thus becomes a deliberation on the contemporary with the aid of a speculated upon and collated past. |
| akka book: Baddawi Leila Abdelrazaq, 2014-03-04 Baddawi is the story of a young boy struggling to find his place in the world. Raised in a refugee camp called Baddawi in northern Lebanon, Ahmad is just one of the many thousands of refugee children born to Palestinians who fled their homeland after the war in 1948 established the state of Israel. In this visually arresting graphic novel, Leila Abdelrazaq explores her father's childhood in the 1960s and '70s from a boy's eye view as he witnesses the world crumbling around him and attempts to carry on, forging his own path in the midst of terrible uncertainty. |
| akka book: Daily Reflections and Stories for Children: Stories of Bahá'u'lláh , 2012 A short passage from the Baha'i writings, a simple story and a beautiful painting for each of 19 days all relating to a virtue promote in children a love for reading daily from the scriptures and enable them to learn from the example of 'Abdu'l Baha.This second volume of the popular Daily Reflections and Stories for Children provides more stories about 'Abdu'l Baha, additional passages from the scriptures and new paintings to enhance your children's bedtime devotions. |
为什么Akka(Actor模型)在中国不温不火？ - 知乎
Akka自己是什么，多看书多思考，隔壁Golang家说自己某routine简单好使，也可以对比一下异同。 而且，提醒一点，Akka不提供事务性的保证，而且几乎把所有分布式通信（即使是单机内 …
akka有哪些比较好的学习资料？ - 知乎
akka的理论基础是actor model， 某大神说过，这才 we do OO right。 因为长期的OOP教育（荼毒？ ）很多人刚接触akka的时候主要的阅读理解障碍是 为啥要这么干，然后才是有啥好处，加上 …
.net生态是否有类似Akka的框架？ - 知乎
Dec 18, 2023 · 高可用、容错的分布式系统 - Akka.Cluster、Akka.Cluster.Sharding 以及建立在 Akka.Cluster 之上的其他工具，使得通过利用具有拓扑感知的消息路由和分发的点对点编程模 …
akka和erlang在MMO游戏服务器的性能哪个更适用？ - 知乎
另外再说两句，我觉得akka和erlang没什么比较性，因为在游戏服务器开发领域必须满足能够热更新的条件，方便及时排除BUG修补漏洞，基本上只有C++，GO带Lua脚本和erlang的OTP能够 …
国内哪家公司用到了akka框架？ - 知乎
我们公司是一家设计制造汽车行业 IoT 设备的公司。我们的设备有上报数据、接收参数下发和远程升级的功能。负责设备接入和通信协议的通信服务器就是基于Akka (Scala) 的。作为主要开发 …
为什么 spark 2.0 底层通信不用 Akka 而转用 netty - 知乎
2. Spark的Akka配置是针对Spark自身来调优的，可能跟用户自己代码中的Akka配置冲突。 3. Spark用的Akka特性很少，这部分特性很容易自己实现。同时，这部分代码量相比Akka来说少 …
Akka - 知乎
切实用过Akka写过几个生产级的应用。从我的经验来说，我觉得Akka推广不开主要是因为应用面很局限。 首先，Akka原生是Scala，这就足够小众了。FP原教旨主义认为这玩意不够干净， …
distruptor和akka两种并发框架有啥区别？ - 知乎
Mar 22, 2019 · Akka是一个开源的、基于Actor模型的并发编程框架。 Actor模型是一种轻量级的并发编程模型，它将并发程序看作是一组相互独立的、互相发送消息的Actor（类似于面向对象 …
mbtech和长城动力研究院? - 知乎
mbtech，上海梅赛德斯奔驰车辆技术有限公司。听着名头挺虎的，技术咨询公司，已经被akka收购了。另一家现阶段中国一线的自主品牌的核心研究院。 mb… 显示全部
Scala + Akka与Erlang/OTP的应用场景有什么细微不同，优势和劣 …
在于对慢IO调用的支持性。 akka 的actor 里发起一个慢IO 就歇菜了，语言自身不会处理。erlang 的actor 里调用慢IO 语言自身会切换执行。 场景： 大规模利用代理进行爬虫抓取。并发到1K …
为什么Akka(Actor模型)在中国不温不火？ - 知乎
Akka自己是什么，多看书多思考，隔壁Golang家说自己某routine简单好使，也可以对比一下异同。 而且，提醒一点，Akka不提供事务性的保证，而且几乎把所有分布式通信（即使是单机内 …
akka有哪些比较好的学习资料？ - 知乎
akka的理论基础是actor model， 某大神说过，这才 we do OO right。 因为长期的OOP教育（荼毒？ ）很多人刚接触akka的时候主要的阅读理解障碍是 为啥要这么干，然后才是有啥好处，加上 …
.net生态是否有类似Akka的框架？ - 知乎
Dec 18, 2023 · 高可用、容错的分布式系统 - Akka.Cluster、Akka.Cluster.Sharding 以及建立在 Akka.Cluster 之上的其他工具，使得通过利用具有拓扑感知的消息路由和分发的点对点编程模 …
akka和erlang在MMO游戏服务器的性能哪个更适用？ - 知乎
另外再说两句，我觉得akka和erlang没什么比较性，因为在游戏服务器开发领域必须满足能够热更新的条件，方便及时排除BUG修补漏洞，基本上只有C++，GO带Lua脚本和erlang的OTP能够 …
国内哪家公司用到了akka框架？ - 知乎
我们公司是一家设计制造汽车行业 IoT 设备的公司。我们的设备有上报数据、接收参数下发和远程升级的功能。负责设备接入和通信协议的通信服务器就是基于Akka (Scala) 的。作为主要开发 …
为什么 spark 2.0 底层通信不用 Akka 而转用 netty - 知乎
2. Spark的Akka配置是针对Spark自身来调优的，可能跟用户自己代码中的Akka配置冲突。 3. Spark用的Akka特性很少，这部分特性很容易自己实现。同时，这部分代码量相比Akka来说少 …
Akka - 知乎
切实用过Akka写过几个生产级的应用。从我的经验来说，我觉得Akka推广不开主要是因为应用面很局限。 首先，Akka原生是Scala，这就足够小众了。FP原教旨主义认为这玩意不够干净， …
distruptor和akka两种并发框架有啥区别？ - 知乎
Mar 22, 2019 · Akka是一个开源的、基于Actor模型的并发编程框架。 Actor模型是一种轻量级的并发编程模型，它将并发程序看作是一组相互独立的、互相发送消息的Actor（类似于面向对象 …
mbtech和长城动力研究院? - 知乎
mbtech，上海梅赛德斯奔驰车辆技术有限公司。听着名头挺虎的，技术咨询公司，已经被akka收购了。另一家现阶段中国一线的自主品牌的核心研究院。 mb… 显示全部
Scala + Akka与Erlang/OTP的应用场景有什么细微不同，优势和劣 …
在于对慢IO调用的支持性。 akka 的actor 里发起一个慢IO 就歇菜了，语言自身不会处理。erlang 的actor 里调用慢IO 语言自身会切换执行。 场景： 大规模利用代理进行爬虫抓取。并发到1K …
