An asynchronous map.
An asynchronous counter that can be used to across the cluster to maintain a consistent count.
Local maps can be used to share data safely in a single Vert.x instance.
The map only allows immutable keys and values in the map, OR certain mutable objects such as Buffer instances which will be copied when they are added to the map.
This ensures there is no shared access to mutable state from different threads (e.g. different event loops) in the Vert.x instance, and means you don't have to protect access to that state using synchronization or locks.
Your own objects can be marked as immutable by implementing the
Since the version 3.4, this class extends the interface. However some methods are only accessible in Java.
An asynchronous exclusive lock which can be obtained from any node in the cluster.
When the lock is obtained, no-one else in the cluster can obtain the lock with the same name until the lock is released.
Shared data allows you to share data safely between different parts of your application in a safe way.
Shared data provides:
Please see the documentation for more information.