valkey-redis specific metrics added

docs/products/valkey/reference/valkey-metrics-in-prometheus.md

@@ -52,8 +52,151 @@ with the Service URI from the **Connection information** section.
 These metrics provide insights into the performance and health of your Aiven for
 Valkey service.
 
-### Node statistics
+- `keyspace_hitrate(float, number)`
+- `rdb_last_save_time_elapsed(int, seconds)`
+
+### Server
+
+- `uptime(int, seconds)`
+- `lru_clock(int, number)`
+- `redis_version(string)`
+
+### Clients
+
+- `clients(int, number)`
+- `client_longest_output_list(int, number)`
+- `client_biggest_input_buf(int, number)`
+- `blocked_clients(int, number)`
+
+### Memory
+
+- `used_memory(int, bytes)`
+- `used_memory_rss(int, bytes)`
+- `used_memory_peak(int, bytes)`
+- `total_system_memory(int, bytes)`
+- `used_memory_lua(int, bytes)`
+- `maxmemory(int, bytes)`
+- `maxmemory_policy(string)`
+- `mem_fragmentation_ratio(float, number)`
+
+### Persistence
+
+- `loading(int,flag)
+- `rdb_changes_since_last_save(int, number)`
+- `rdb_bgsave_in_progress(int, flag)`
+- `rdb_last_save_time(int, seconds)`
+- `rdb_last_bgsave_status(string)`
+- `rdb_last_bgsave_time_sec(int, seconds)`
+- `rdb_current_bgsave_time_sec(int, seconds)`
+- `aof_enabled(int, flag)`
+- `aof_rewrite_in_progress(int, flag)`
+- `aof_rewrite_scheduled(int, flag)`
+- `aof_last_rewrite_time_sec(int, seconds)`
+- `aof_current_rewrite_time_sec(int, seconds)`
+- `aof_last_bgrewrite_status(string)`
+- `aof_last_write_status(string)`
 
-### Cluster statistics
+### Stats
 
-### Cluster health
+- `total_connections_received(int, number)`
+- `total_commands_processed(int, number)`
+- `instantaneous_ops_per_sec(int, number)`
+- `total_net_input_bytes(int, bytes)`
+- `total_net_output_bytes(int, bytes)`
+- `instantaneous_input_kbps(float, KB/sec)`
+- `instantaneous_output_kbps(float, KB/sec)`
+- `rejected_connections(int, number)`
+- `sync_full(int, number)`
+- `sync_partial_ok(int, number)`
+- `sync_partial_err(int, number)`
+- `expired_keys(int, number)`
+- `evicted_keys(int, number)`
+- `keyspace_hits(int, number)`
+- `keyspace_misses(int, number)`
+- `pubsub_channels(int, number)`
+- `pubsub_patterns(int, number)`
+- `latest_fork_usec(int, microseconds)`
+- `migrate_cached_sockets(int, number)`
+
+### Replication
+
+- `connected_slaves(int, number)`
+- `master_link_down_since_seconds(int, number)`
+- `master_link_status(string)`
+- `master_repl_offset(int, number)`
+- `second_repl_offset(int, number)`
+- `repl_backlog_active(int, number)`
+- `repl_backlog_size(int, bytes)`
+- `repl_backlog_first_byte_offset(int, number)`
+- `repl_backlog_histlen(int, bytes)`
+
+### CPU
+
+- `used_cpu_sys(float, number)`
+- `used_cpu_user(float, number)`
+- `used_cpu_sys_children(float, number)`
+- `used_cpu_user_children(float, number)`
+
+### Cluster
+
+- `cluster_enabled(int, flag)`
+
+### `keyspace`
+
+- `keys(int, number)`
+- `expires(int, number)`
+- `avg_ttl(int, number)`
+
+### `cmdstat`
+
+Command fields:
+
+- `calls(int, number)`
+- `failed_calls(int, number)`
+- `rejected_calls(int, number)`
+- `usec(int, mircoseconds)`
+- `usec_per_call(float, microseconds)`
+
+### `latency_percentiles_usec`
+
+Command fields:
+
+- `p50(float, microseconds)`
+- `p99(float, microseconds)`
+- `p99.9(float, microseconds)`
+
+### `replication`
+
+Tags:
+
+- `replication_role`
+- `replica_ip`
+- `replica_port`
+- `state (either "online", "wait_bgsave", or "send_bulk")`
+
+Command fields:
+
+- `lag(int, number)`
+- `offset(int, number)`
+
+### `errorstat`
+
+Tags:
+
+- `err`
+
+Command fields:
+
+- `total (int, number)`
+
+## Measurement tags
+
+- All measurements have the following tags:
+
+  - `port`
+  - `server`
+  - `replication_role`
+
+- `keyspace` measurement has the additional `database` tag.
+- `cmdstat` measurement has the additional `command` tag.
+- `latency_percentiles_usec` measurement has the additional `command` tag.