Call Spring REST APIs Concurrently Using Java Completable Future

REST Services In this tutorial I am going to show you how to call Spring REST APIs concurrently using Java CompletableFuture. So basically REST service APIs will be invoked parallelly and in parallel execution the response time will be very less. I am going to show you how to call REST APIs concurrently using Java 8 or later’s new feature…

Spring Asynchronous Execution using @Async

Spring Async In this tutorial I will discuss about the asynchronous execution support in Spring using the @Async annotation. There are cases where Spring framework’s @Async is necessary to execute piece of code asynchronous. An example would be while sending a (JMS) message from one system to another system. The advantage is that the user does not have to wait…

Java CyclicBarrier

A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. CyclicBarriers are useful in programs involving a fixed sized party of threads that must occasionally wait for each other. The barrier is called cyclic because it can be re-used after the waiting threads are released. A CyclicBarrier supports an…

Java CountDownLatch

What is CountDownLatch? A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes, i.e., a kind of synchronization tool that allows one Thread  to wait for one or more Threads before it starts processing. How does CountDownLatch work? A CountDownLatch is initialized with a given count. The await…

Callable and Future in Java

Here I am going to give you an example on Callable and Future in Java. public interface Callable<V> A task that returns a result and may throw an exception. Implementors define a single method with no arguments called call. The Callable interface is similar to Runnable, in that both are designed for classes whose instances are potentially executed by another…

How to concurrently execute tasks using Java in Spring

This tutorials will show you how we can concurrently execute different operations using Java utility class called java.util.concurrent.Executors in Spring framework. Spring supports XML as well as Programmatic configuration of beans but, here we will use XML based metadata configuration. If you already have an idea on how to create a maven project in Eclipse will be great otherwise I…