Supported versions and recommended number of instances for High Availability
Supported Redis versions
PDS supports the following Redis data service versions:
Data service | Version |
Redis |
|
Recommended minimum number of instances for Redis (with Sentinel) for High Availability
| Minimum number of instances | Reason |
|---|---|
| 3 | Each instance runs both Redis and Sentinel processes. A majority of Sentinels (two of three) is needed to detect primary node failures and trigger a failover, keeping the Redis service consistently available. |