These metrics are additional metrics for Redis on Flash (RoF) databases.

% Values in RAM

Percent of keys whose values are stored in RAM.

Components measured: Database and Shard

Values in flash

Number of keys with values stored in flash, not including replication.

Components measured: Database and Shard

Values in RAM

Number of keys with values stored in RAM, not including replication.

Components measured: Database and Shard

Flash key-value operations

Number of operations on flash key values (read + write + del) per second.

Components measured: Node

Flash bytes/sec

Number of total bytes read and written per second on flash memory.

Components measured: Cluster, Node, Database, and Shard

Flash I/O operations/sec

Number of input/output operations per second on the flash storage device.

Components measured: Cluster and Node

RAM:Flash access ratio

Ratio between logical Redis key value operations and actual flash key value operations.

Components measured: Database and Shard

RAM hit ratio

Ratio of requests processed directly from RAM to total number of requests processed.

Components measured: Database and Shard

Used flash

Total amount of memory used to store values in flash.

Components measured: Database and Shard

Free flash

Amount of free space on flash storage.

Components measured: Cluster and Node

Flash fragmentation

Ratio between the used logical flash memory and the physical flash memory that is used.

Components measured: Database and Shard

Used RAM

Total size of data stored in RAM, including keys, values, overheads, and replication (if enabled).

Components measured: Database and Shard

RAM dataset overhead

Percentage of the RAM limit that is used for anything other than values, such as key names, dictionaries, and other overheads.

Components measured: Database and Shard

RAM limit

Maximum amount of RAM that can be used in bytes.

Components measured: Database

RAM usage

Percentage of the RAM limit used.

Components measured: Database

Calculated metrics

These RoF statistics can be calculated from other metrics.