Manage Auto Tiering storage engine

Manage the storage engine used for your database with auto tiering enabled.

Manage the storage engine

Auto Tiering supports two storage engines:

• Speedb: Redis proprietary storage engine. The default and recommended storage engine as of Redis Enterprise Software version 7.2.4.

• RocksDB: Used up to Redis version 6.2. Deprecated for later Redis versions.

Redis Flex supports Speedb only.

Change the storage engine

1. Change the cluster level configuration for default storage engine.

• API:

  curl -k -u <username>:<password> -X PUT -H "Content-Type: application/json" -d '{"bigstore_driver":"speedb"}' https://localhost:9443/v1/cluster
  

• CLI:

  rladmin cluster config bigstore_driver {speedb | rocksdb}
  

2. Restart the each database on the cluster one by one.

   rladmin restart db { db:<id> | <name> }
   

Monitor the storage engine

To get the current cluster level default storage engine run:

• Use the rladmin info cluster command look for ‘bigstore_driver’.

• Use the REST API:

  curl -k -u <username>:<password> -X GET -H "Content-Type: application/json" https://localhost:9443/v1/cluster
  

Versions of Redis Enterprise 7.2 and later provide a metric called bdb_bigstore_shard_count to help track the shard count per database, filtered by bdb_id and by storage engine as shown below:

bdb_bigstore_shard_count{bdb="1",cluster="mycluster.local",driver="rocksdb"} 1.0
bdb_bigstore_shard_count{bdb="1",cluster="mycluster.local",driver="speedb"} 2.0

For more about metrics for Redis Enterprise’s integration with Prometheus, see Prometheus integration.