Composable Futures With Akka Featuring Java, Scala and Akka Code Examples This book explains how to write concurrent programs that can run in. Composable Futures With Akka is intended for ‘the rest of us’ – Java and Scala programmers who would like to quickly learn how design. Writing concurrent programs that can run in multiple threads and on multiple cores is crucial but daunting. Composable futures provide a convenient abstraction.
|Published (Last):||24 December 2016|
|PDF File Size:||13.62 Mb|
|ePub File Size:||20.19 Mb|
|Price:||Free* [*Free Regsitration Required]|
Existing projects can use this technique to rapidly leverage the extra functionality of Akka futures, and thereby extend the functionality of legacy software. Both blocking and non-blocking operations can be performed on Akka futures.
Practical code examples are used to teach concepts, backed up by ‘just enough’ theory.
Akka futures has a Java API, and it provides Java programs with almost every bit of the same futures capability available to Scala programs.
Some familiarity with git is assumed. The book provides complete reference information about the classes and methods for working with Akka futures.
Target Audience Composable Futures with Akka 2.
For example, transformations and operations on collections of futures are supported, along with numerous asynchronous callbacks. If you know Java and are learning Scala, comparing the two programs will be instructive.
Mike has consulted on many legal cases and performed project failure analysis, and has researched and testified in cases involving intellectual property issues such as patent infringement and trade secret misappropriation. Multicore concurrency requires multi-threaded programming, but that is hard to do properly.
Further information for programming in each language is provided, usually with code snippets. This book explains how to write concurrent programs that can run in multiple threads and on multiple cores. The value of an Akka Future will normally become available sometime after creation, or it may incorporate an exception futurds during computation. Akka futures are being subsumed into Scala 2.
Similar programs were written in Java and Scala. In general, futures are preferred for one-off, uncoordinated, stateless jobs, which can range in duration from a web request of 5ms to data processing futuures of hours or more. Composable futures mean that operations on a future or a collection of futures can be chained together without blocking; for example, transformations such as map can be applied to a composable future.
Composable Futures with Akka | Mike Slinn’s Weblog
When to use futures and when to use actors? About Contents Change history No longer available. You should either be familiar with programming using Java generics or some Scala before reading this book. Java programmers do not require prior experience with Scala; Scala programmers do not need to know Java. Actors are generally preferred for coordinated or stateful activities. The futures implementation bundled in the free, open source Akka stack is written in Scala.
He has been recognized as a software expert in US federal court. He is often engaged to turn around projects and can provide interim technical leadership for companies in transition. What are composable futures?
A chapter is dedicated to java. The futures implementation provided by Akka 1. Akka Futures can also be preset to a value or exception when created. Other implementations of futures are limited.
Composable Futures with Akka 2.0
You can also use the SBT console to try code snippets interactively. Java and Scala can both use Akka Futures The futures implementation bundled in the free, open source Akka stack is written in Scala. Special considerations for programming with futures are discussed.
Akka futures integrate easily with existing software projects. An overview of futures is provided through code examples. The Promises chapter in the book includes a case study that shows how easy it is to integrate Akka futures into existing code. Mike is a hands-on architect who enjoys programming and mentoring.
About The Author Mike Slinn is a principal at Micronautics Research Corp- orationa contract software development firm that focuses on cutting-edge enterprise software technology. Mike Slinn is a principal at Micronautics Research Corp- orationa contract software development firm that focuses on cutting-edge enterprise software technology. The code is provided as a git repository, which you can update any time.
Mike has written three books and fuhures fifty articles on software technology. Akka futures is integrated with Akka actors for distributed computing. Dozens of complete working code examples are provided with the book, at least one witg method in each language. Each method of the Akka futures implementation is covered in detail; first introduced with short explanation, then followed by the Java signature and the Scala signature.
The Akka and Twitter implementations are much more advanced. Composable Futures with Akka 2.