The IgniteAtomicLong interface provides a long variable that can be read and written atomically, and that also supports advanced atomic operations.

We can create a long value as follows:

IgniteAtomicLong atomicLong = ignite.atomicLong("myLong", // Atomic long name.
 0, // Initial value.
 true // Create if it does not exist.
 );

All operations are atomic in nature. You can change a value as follows:

System.out.println("The new value is - "+atomicLong.addAndGet(2));

The output will look like this: