Chapter 10. The Asynchronous API

download PDF
In addition to synchronous API methods, Red Hat JBoss Data Grid also offers an asynchronous API that provides the same functionality in a non-blocking fashion.
The asynchronous method naming convention is similar to their synchronous counterparts, with Async appended to each method name. Asynchronous methods return a Future that contains the result of the operation.
For example, in a cache parameterized as Cache<String, String>, Cache.put(String key, String value) returns a String, while Cache.putAsync(String key, String value) returns a Future<String>.

10.1. Asynchronous API Benefits

The asynchronous API does not block, which provides multiple benefits, such as:
  • The guarantee of synchronous communication, with the added ability to handle failures and exceptions.
  • Not being required to block a thread's operations until the call completes.
These benefits allow you to better harness the parallelism in your system, for example:

Example 10.1. Using the Asynchronous API

Set<Future<?>> futures = new HashSet<Future<?>>();
futures.add(cache.putAsync("key1", "value1"));
futures.add(cache.putAsync("key2", "value2"));
futures.add(cache.putAsync("key3", "value3"));
In the example, The following lines do not block the thread as they execute:
  • futures.add(cache.putAsync(key1, value1));
  • futures.add(cache.putAsync(key2, value2));
  • futures.add(cache.putAsync(key3, value3));
The remote calls from the three put operations are executed in parallel. This is particularly useful when executed in distributed mode.
Red Hat logoGithubRedditYoutubeTwitter


Try, buy, & sell


About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

© 2024 Red Hat, Inc.