Persistence characteristic | Correlator persistence | MemoryStore | Apama Database Connector Adapter (ADBC) |
Completeness of what is persisted | All state in persistent EPL monitors | Only state that you explicitly store. Partial listener evaluations are impossible to store. | Only state that you explicitly store. Partial listener evaluations are impossible to store. |
Recovery mechanism | Automatic | Manual | Manual |
EPL monitors can be notified about recovery | Yes | Yes | Yes |
Supported across Apama versions | Yes * | Yes | Yes |
Incremental snapshots | Yes | Yes | Yes |
Storage type | Embedded | Embedded | Shared servers are supported. You can use any database server or driver. |
Atomic snapshots | Yes | Yes | Yes |
Performance benefit from pipelining disk writes with processing | Yes | Yes | Yes |
Supports multiple contexts | Yes | Yes | Yes |