content/operate/rs/references/metrics/database-operations.md
The following metrics are available in the Redis Software Cluster Manager UI.
{{<image filename="images/rs/screenshots/metrics/db-metrics.png" alt="The database metrics page.">}}
Number of objects evicted from the database per second.
Objects are evicted from the database according to the [eviction policy]({{< relref "/operate/rs/databases/memory-performance/eviction-policy" >}}).
Object information is not measured during [shard migration]({{< relref "/operate/rs/databases/configure/replica-ha" >}}).
Components measured: Database and Shard
Number of expired objects per second.
Object information is not measured during [shard migration]({{< relref "/operate/rs/databases/configure/replica-ha" >}}).
Components measured: Database and Shard
Ratio of the number of operations on existing keys out of the total number of operations.
Components measured: Database and Shard
The number of read operations per second on keys that do not exist.
Read misses are not measured during [shard migration]({{< relref "/operate/rs/databases/configure/replica-ha" >}}).
Components measured: Database
Number of write operations per second on keys that do not exist.
Write misses are not measured during [shard migration]({{< relref "/operate/rs/databases/configure/replica-ha" >}}).
Components measured: Database and Shard
The total amount of time between sending a Redis operation and receiving a response from the database.
The graph shows average, minimum, maximum, and last latency values for all latency metrics.
Components measured: Database
Components measured: Database
Latency per write operation.
Components measured: Database
Components measured: Database
Number of total operations per second, which includes read operations, write operations, and other operations.
Components measured: Cluster, Node, Database, and Shard
Number of total read operations per second.
To find out which commands are read operations, run the following command with [redis-cli]({{< relref "/operate/rs/references/cli-utilities/redis-cli" >}}):
ACL CAT read
Components measured: Database
Number of total write operations per second.
To find out which commands are write operations, run the following command with [redis-cli]({{< relref "/operate/rs/references/cli-utilities/redis-cli" >}}):
ACL CAT write
Components measured: Database
Minimum number of write operations queued per [Active-Active]({{< relref "/operate/rs/databases/active-active" >}}) replica database.
Maximum number of write operations queued per [Active-Active]({{< relref "/operate/rs/databases/active-active" >}}) replica database.
Number of operations per second that are not read operations or write operations.
Examples of other operations include [PING]({{< relref "/commands/ping" >}}), [AUTH]({{< relref "/commands/auth" >}}), and [INFO]({{< relref "/commands/info" >}}).
Components measured: Database
Total number of keys in the dataset.
Does not include replicated keys, even if [replication]({{< relref "/operate/rs/databases/durability-ha/replication" >}}) is enabled.
Total keys is not measured during [shard migration]({{< relref "/operate/rs/databases/configure/replica-ha" >}}).
Components measured: Database