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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You can also use the Composaboe console to try code snippets interactively. If you know Java and are learning Scala, comparing the two programs will be instructive.
Target Audience Composable Futures with Akka 2. In general, futures are preferred for one-off, uncoordinated, stateless jobs, which can range in duration from a web furures of 5ms to data processing jobs of hours or more. The Promises chapter in the book includes a case study that shows how easy it is akkq integrate Akka futures into existing code.
Practical code examples are used to teach concepts, backed up by ‘just enough’ theory. When to use futures and when to use actors? A chapter is dedicated to java.
What are composable futures? An overview of futures is provided through code examples. Akka futures are being subsumed into Scala 2.
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. The code is provided as a git repository, which you can update any time. About Contents Change history No longer available. Special considerations for programming with futures are discussed. Mike has written three books and over fifty articles on 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.
He has been recognized as a software expert in US federal court. Composable Futures with Akka 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. Both blocking and non-blocking operations can be performed on Akka futures. Akka Futures can also be preset to a value or exception when created.
Mike Slinn is a principal at Micronautics Research Corp- orationa contract software development firm that focuses on cutting-edge enterprise software technology. The futures implementation bundled in the free, open source Akka stack is written in Scala. He is often engaged to turn around projects and can provide interim technical leadership for companies in transition.
Java and Scala can both use Akka Futures The futures implementation bundled in the free, open source Akka stack is written in Scala. Java programmers do not require prior experience with Scala; Scala programmers do not need to know Java. 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.
Composable Futures with Akka and Scala
Further information for programming in each language is provided, usually with code snippets. Akka futures composale integrated with Akka actors for distributed computing.
Mike is a hands-on architect who enjoys programming and mentoring.
Some familiarity with git is assumed. Multicore concurrency requires multi-threaded programming, but that is hard to do properly. The futures implementation provided by Akka 1.
Composable Futures with Akka 2.0
Dozens of complete working code examples are provided with the book, at least one per method in each language. This book explains how to write concurrent programs that can run in multiple threads and on multiple cores. 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.
Actors are generally preferred for coordinated or stateful activities. Other implementations of futures are limited. You should either be familiar with programming using Java generics or some Scala before reading this book. For example, transformations and operations fuyures collections of futures are supported, along with numerous asynchronous callbacks. The book provides complete reference information about the classes and methods for working with Akka futures. The Akka and Twitter implementations are much more advanced.
Similar programs were written in Java and Scala.
Composable Futures with Akka
The value of an Akka Future will normally become available sometime after creation, or it may incorporate an exception raised during computation. Akka futures integrate easily with existing software projects.
Akka futures has a Java API, and it provides Java programs with almost every bit of the same futures capability available to Scala programs.