| Class | Description |
|---|---|
| AsyncMap | An asynchronous map. |
| Counter | An asynchronous counter that can be used to across the cluster to maintain a consistent count. |
| LocalMap | Local maps can be used to share data safely in a single Vert.x instance. |
| Lock | An asynchronous exclusive lock which can be obtained from any node in the cluster. |
| SharedData | Shared data allows you to share data safely between different parts of your application in a safe way. |