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Mikar Other implementations of futures are limited. He is often engaged to turn around projects and can provide interim technical leadership for companies in transition. Special considerations for programming with futures are discussed. What are composable futures? About Contents Change history No longer available.
Multicore concurrency requires multi-threaded programming, but that is hard to do properly. Akka Futures can also be preset to a value or exception when created. 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. Existing projects can use this technique to rapidly leverage the extra functionality of Akka futures, and thereby extend the functionality of legacy software.
Java programmers do not require prior experience with Scala; Scala programmers do not need to know Java. Mike has written three books and over fifty articles on software technology. You can also use the SBT console to try code snippets interactively. Akka futures are being subsumed into Scala 2.
Mike is a hands-on architect who enjoys programming and mentoring. Composable Futures with Akka 2. The futures implementation provided by Akka 1. The value of an Akka Future will normally become available sometime after creation, or it may incorporate an exception raised during computation. Some familiarity with git is assumed. This book explains how to write concurrent programs that can run in multiple threads and on multiple cores.
The code is provided as a git repository, which you can update any time. For example, transformations composbale operations on collections of futures are supported, along with numerous asynchronous callbacks. 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.
Aka 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- composablda contract software development firm that focuses on cutting-edge enterprise software technology. 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.
The futures implementation bundled in the free, open source Akka stack is written in Scala. An overview of futures is provided through code examples. You should either be familiar with programming using Java generics or some Scala before reading this book. Composable Futures with Akka A chapter is dedicated to java.
He has been recognized as a software expert in US federal court. Akka futures is integrated with Akka actors for distributed computing. Actors are generally preferred for coordinated or stateful activities. Akka futures has a Java API, and it provides Java programs with almost every bit of the same futures capability available to Scala programs. Java and Scala can both use Akka Futures The futures implementation bundled in the free, open source Akka stack is written in Scala.
The Akka and Twitter implementations are much more advanced. 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. Dozens of complete working code examples are provided with the book, at least one per futudes in each language.
The book provides complete reference information about the classes and methods for working with Akka futures. Similar programs were written in Java and Scala.
Akka futures integrate easily with existing software projects. Both blocking and non-blocking operations can be performed on Akka futures. Further information for programming in each language is provided, usually with code snippets. The Promises chapter in the book includes a case study that shows how easy it is to integrate Akka futures into existing compoaable. If you know Java and are learning Scala, comparing the two programs will be instructive.
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Composable Futures with Akka 2.0
The futures implementation provided by Akka 1. Mike Slinn is a principal at Micronautics Research Corp- orationa contract software development firm that focuses on cutting-edge enterprise software technology. Composable Futures with Akka 2. What are composable wkth About Contents Change history No longer available. The book provides complete reference information about the classes and methods for working with Akka futures.
COMPOSABLE FUTURES WITH AKKA PDF
Kajiktilar To wait for and retrieve the actual result the simplest method is:. You can also use the SBT console to try code snippets interactively. Even if the Future has already been completed, when one of these methods is called. You can also combine two Futures into a new Future that will hold a tuple of the two Futures successful results, using the zip operation. Now we have a second Futuref2that will eventually contain an Int Integer. The value of an Akka Future will normally become available sometime after creation, or it may incorporate an exception raised during computation.