1.8.2. About the Asynchronous API

In addition to synchronous API methods, 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).