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.

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For example, transformations and operations on collections of futures are supported, along with numerous asynchronous callbacks. He has been recognized as a software expert in US federal court. Other implementations of futures are limited.

Composable Futures with Akka 2.0

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 jobs of hours or more.

Mike Slinn is a principal at Micronautics Research Corp- orationa contract software development firm that focuses on cutting-edge enterprise software technology.

Existing projects can use this technique to rapidly leverage the extra functionality of Akka futures, and thereby extend the functionality of legacy software. Dozens of complete working code examples are provided with the book, at least one per method in each language. Akka futures are being subsumed into Scala 2. 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.

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Java and Scala can both use Akka Futures The futures implementation futurds in the free, open source Akka stack is written in Scala.

Akka futures integrate easily with existing software projects. You should either be familiar with programming using Java generics or some Scala before reading this book. About Contents Change history No longer available.

The code is provided as kaka git repository, which you can update any time. Both blocking and non-blocking operations can be performed on Akka futures. When to use futures and when to use actors? 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. Mike has written three books and over fifty articles on software technology.

The futures implementation provided by Akka 1. He is often engaged to turn around projects and can provide interim technical leadership for companies in transition.

Further information for programming in each language is provided, usually with code snippets. What are composable futures? The book provides complete reference information about the classes and methods for working with Akka futures.

The Promises chapter in the book includes a case study that shows how easy it is to integrate Akka futures into existing code. Target Audience Composable Futures with Akka 2. 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. Special considerations for programming with futures are discussed.

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Composable Futures with Akka and Scala

The futures implementation bundled in the free, open source Akka stack is written in Scala. Composable Futures with Akka 2. Actors are generally preferred for coordinated or stateful activities.

Some familiarity with git is assumed. An overview of futures is provided through code examples. The value of an Akka Future will normally become available sometime after creation, or it may incorporate an exception raised during computation. If you know Java and are learning Scala, comparing the two programs will be instructive. Akka cmposable has a Java API, and it provides Java programs with almost every bit of the same futures capability available to Scala programs. You can also use the SBT console to try code snippets interactively.

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