DCS Metrics

Introduction

This section describes DCS metrics reported to Cloud Eye as well as their namespaces and dimensions. You can use the Cloud Eye console or call APIs to query the DCS metrics and alarms.

Different types of instances are monitored on different dimensions.

Single-node:
Single-node instances are monitored on the instance dimension. The monitoring is conducted on the Redis Server.
Master/standby:
Master/Standby instances are monitored on the instance and Redis Server dimensions. Instance monitoring covers the master node, while Redis Server monitoring covers the master and standby nodes.
Cluster:
Proxy Cluster instances are monitored on the instance, Redis Server, and proxy dimensions. Instance monitoring covers the aggregated master node data, Redis Server monitoring covers each shard in the cluster, and proxy monitoring covers each proxy in the cluster.

Redis Cluster instances are monitored on the instance and Redis Server dimensions. Instance monitoring covers the aggregated master node data and Redis Server monitoring covers each shard in the cluster.

Namespace

SYS.DCS

DCS Redis 3.0 Instance Metrics

The Monitored Objects and Dimensions column lists instances and dimensions that support the corresponding metrics.

**Table 1** DCS Redis 3.0 instance metrics
Metric ID	Metric	Description	Value Range	Monitored Object and Dimension	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	CPU consumed by the monitored object Unit: %	0–100%	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object Unit: %	0–100%	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
net_in_throughput	Network Input Throughput	Inbound throughput per second on a port Unit: byte/s	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
net_out_throughput	Network Output Throughput	Outbound throughput per second on a port Unit: byte/s	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
client_longest_out_list	Client Longest Output List	Longest output list among current client connections	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
client_biggest_in_buf	Client Biggest Input Buf	Maximum input data length among current client connections Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
blocked_clients	Blocked Clients	Number of clients suspended by block operations such as BLPOP, BRPOP, and BRPOPLPUSH	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory	Used Memory	Number of bytes used by the Redis server Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_rss	Used Memory RSS	Resident set size (RSS) memory that the Redis server has used, which is the memory that actually resides in the memory, including all stack and heap memory but not swapped-out memory Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_peak	Used Memory Peak	Peak memory consumed by Redis since the Redis server last started Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_lua	Used Memory Lua	Number of bytes used by the Lua engine Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation, which is the ratio between used_memory_rss/used_memory.	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
total_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
total_commands_processed	Commands Processed	Number of commands processed during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
total_net_input_bytes	Network Input Bytes	Number of bytes received during the monitoring period Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
total_net_output_bytes	Network Output Bytes	Number of bytes sent during the monitoring period Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
instantaneous_input_kbps	Input Flow	Instantaneous input traffic Unit: kbit/s	≥ 0 kbits/s	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
instantaneous_output_kbps	Output Flow	Instantaneous output traffic Unit: kbit/s	≥ 0 kbits/s	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
rejected_connections	Rejected Connections	Number of connections that have exceeded maxclients and been rejected during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
keyspace_hits	Keyspace Hits	Number of successful lookups of keys in the main dictionary during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
keyspace_misses	Keyspace Misses	Number of failed lookups of keys in the main dictionary during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
pubsub_channels	PubSub Channels	Number of Pub/Sub channels	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
pubsub_patterns	PubSub Patterns	Number of Pub/Sub patterns	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
keyspace_hits_perc	Hit Rate	Ratio of the number of Redis cache hits to the number of lookups Unit: %	0–100%	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
command_max_delay	Maximum Command Latency	Maximum latency of commands Unit: ms	≥ 0 ms	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
auth_errors	Authentication Failures	Number of failed authentications	≥ 0	Monitored object: Single-node or master/standby DCS Redis instance Dimension: dcs_instance_id	1 minute
is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the instance	1: yes 0: no	Monitored object: Single-node or master/standby DCS Redis instance Dimension: dcs_instance_id	1 minute
keys	Keys	Number of keys in Redis	≥ 0	Monitored object: Single-node or master/standby DCS Redis instance Dimension: dcs_instance_id	1 minute

DCS Redis 4.0 and 5.0 Instance Metrics

The Monitored Objects and Dimensions column lists instances and dimensions that support the corresponding metrics.

**Table 2** DCS Redis 4.0 and 5.0 instance metrics
Metric ID	Metric	Description	Value Range	Monitored Object and Dimension	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	CPU consumed by the monitored object Unit: %	0–100%	Monitored object: Single-node or master/standby DCS Redis instance Dimension: dcs_instance_id	1 minute
command_max_delay	Maximum Command Latency	Maximum latency of commands Unit: ms	≥ 0 ms	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
total_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the instance	1: yes 0: no	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object Unit: %	0–100%	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
expires	Keys With an Expiration	Number of keys with an expiration in Redis	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
keyspace_hits_perc	Hit Rate	Ratio of the number of Redis cache hits to the number of lookups Unit: %	0–100%	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory	Used Memory	Number of bytes used by the Redis server Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_dataset	Used Memory Dataset	Dataset memory that the Redis server has used Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_dataset_perc	Used Memory Dataset Ratio	Percentage of dataset memory that the Redis server has used Unit: %	0–100%	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_rss	Used Memory RSS	Resident set size (RSS) memory that the Redis server has used, which is the memory that actually resides in the memory, including all stack and heap memory but not swapped-out memory Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
keyspace_misses	Keyspace Misses	Number of failed lookups of keys in the main dictionary during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
keys	Keys	Number of keys in Redis	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
blocked_clients	Blocked Clients	Number of clients suspended by block operations	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
del	DEL	Number of DEL commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
expire	EXPIRE	Number of EXPIRE commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
get	GET	Number of GET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
hdel	HDEL	Number of HDEL commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
hget	HGET	Number of HGET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
hmget	HMGET	Number of HMGET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
hmset	HMSET	Number of HMSET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
hset	HSET	Number of HSET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
instantaneous_input_kbps	Input Flow	Instantaneous input traffic Unit: KB/s	≥ 0 KB/s	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
instantaneous_output_kbps	Output Flow	Instantaneous output traffic Unit: KB/s	≥ 0 KB/s	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
memory_frag_ratio	Memory Fragmentation Ratio	Ratio between Used Memory RSS and Used Memory	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
mget	MGET	Number of MGET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
mset	MSET	Number of MSET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
pubsub_channels	PubSub Channels	Number of Pub/Sub channels	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
pubsub_patterns	PubSub Patterns	Number of Pub/Sub patterns	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
set	SET	Number of SET commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_lua	Used Memory Lua	Number of bytes used by the Lua engine Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
used_memory_peak	Used Memory Peak	Peak memory consumed by Redis since the Redis server last started Unit: byte	≥ 0	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
sadd	Sadd	Number of SADD commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
smembers	Smembers	Number of SMEMBERS commands processed per second Unit: Count/s	0–500,000	Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id	1 minute
rx_controlled	Flow Control Times	Number of flow control times during the monitoring period Unit: Count	≥ 0	Monitored object: Redis Cluster instance Dimension: dcs_instance_id	1 minute
bandwidth_usage	Bandwidth Usage	Percentage of the used bandwidth to the maximum bandwidth limit	0–200%	Monitored object: Redis Cluster instance Dimension: dcs_instance_id	1 minute

Cluster DCS Redis Instance Metrics

The following describes the metrics for cluster DCS instances. For Proxy Cluster DCS Redis 3.0 instances, the monitoring covers Redis Servers and Proxies. For Redis Cluster DCS Redis 4.0 and 5.0 instances, the monitoring only covers Redis Servers. For details, see Table 3 and Table 4.

The Monitored Objects and Dimensions column lists instances and dimensions that support the corresponding metrics.

**Table 3** Redis Server metrics
Metric ID	Metric	Description	Value Range	Monitored Object and Dimension	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	CPU consumed by the monitored object Unit: %	0–100%	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object Unit: %	0–100%	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
client_longest_out_list	Client Longest Output List	Longest output list among current client connections	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
client_biggest_in_buf	Client Biggest Input Buf	Maximum input data length among current client connections Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
blocked_clients	Blocked Clients	Number of clients suspended by block operations such as BLPOP, BRPOP, and BRPOPLPUSH	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
used_memory	Used Memory	Number of bytes used by the Redis server Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
used_memory_rss	Used Memory RSS	RSS memory that the Redis server has used, which including all stack and heap memory but not swapped-out memory Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
used_memory_peak	Used Memory Peak	Peak memory consumed by Redis since the Redis server last started Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
used_memory_lua	Used Memory Lua	Number of bytes used by the Lua engine Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation, which is the ratio between used_memory_rss/used_memory.	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
total_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
total_commands_processed	Commands Processed	Number of commands processed during the monitoring period	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
total_net_input_bytes	Network Input Bytes	Number of bytes received during the monitoring period Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
total_net_output_bytes	Network Output Bytes	Number of bytes sent during the monitoring period Unit: byte	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
instantaneous_input_kbps	Input Flow	Instantaneous input traffic Unit: KB/s	≥ 0 KB/s	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
instantaneous_output_kbps	Output Flow	Instantaneous output traffic Unit: KB/s	≥ 0 KB/s	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
rejected_connections	Rejected Connections	Number of connections that have exceeded maxclients and been rejected during the monitoring period	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
pubsub_channels	PubSub Channels	Number of Pub/Sub channels	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
pubsub_patterns	PubSub Patterns	Number of Pub/Sub patterns	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
keyspace_hits_perc	Hit Rate	Ratio of the number of Redis cache hits to the number of lookups Unit: %	0–100%	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
command_max_delay	Maximum Command Latency	Maximum latency of commands Unit: ms	≥ 0 ms	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the node	1: yes 0: no	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
keys	Keys	Number of keys in Redis	≥ 0	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
sadd	Sadd	Number of SADD commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
smembers	Smembers	Number of SMEMBERS commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
ms_repl_offset	Replication Gap	Data synchronization gap between the master and the replica	-	Monitored object: Replica of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
del	DEL	Number of DEL commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
expire	EXPIRE	Number of EXPIRE commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
get	GET	Number of GET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
hdel	HDEL	Number of HDEL commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
hget	HGET	Number of HGET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
hmget	HMGET	Number of HMGET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
hmset	HMSET	Number of HMSET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
hset	HSET	Number of HSET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
mget	MGET	Number of MGET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
mset	MSET	Number of MSET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
set	SET	Number of SET commands processed per second Unit: Count/s	0–500,000	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
rx_controlled	Flow Control Times	Number of flow control times during the monitoring period Unit: Count	≥ 0	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute
bandwidth_usage	Bandwidth Usage	Percentage of the used bandwidth to the maximum bandwidth limit	0–200%	Monitored object: Redis Server of cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_cluster_redis_node	1 minute

**Table 4** Proxy metrics
Metric ID	Metric	Description	Value Range	Monitored Object and Dimension	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	CPU consumed by the monitored object Unit: %	0–100%	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object Unit: %	0–100%	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
p_connected_clients	Connected Clients	Number of connected clients	≥ 0	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
max_rxpck_per_sec	Max. NIC Data Packet Receive Rate	Maximum number of data packets received by the proxy NIC per second during the monitoring period Unit: packages/second	0–10,000,000	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
max_txpck_per_sec	Max. NIC Data Packet Transmit Rate	Maximum number of data packets transmitted by the proxy NIC per second during the monitoring period Unit: packages/second	0–10,000,000	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
max_rxkB_per_sec	Maximum Inbound Bandwidth	Largest volume of data received by the proxy NIC per second Unit: KB/s	≥ 0 KB/s	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
max_txkB_per_sec	Maximum Outbound Bandwidth	Largest volume of data transmitted by the proxy NIC per second Unit: KB/s	≥ 0 KB/s	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
avg_rxpck_per_sec	Average NIC Data Packet Receive Rate	Average number of data packets received by the proxy NIC per second during the monitoring period Unit: packages/second	0–10,000,000	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
avg_txpck_per_sec	Average NIC Data Packet Transmit Rate	Average number of data packets transmitted by the proxy NIC per second during the monitoring period Unit: packages/second	0–10,000,000	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
avg_rxkB_per_sec	Average Inbound Bandwidth	Average volume of data received by the proxy NIC per second Unit: KB/s	≥ 0 KB/s	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute
avg_txkB_per_sec	Average Outbound Bandwidth	Average volume of data transmitted by the proxy NIC per second Unit: KB/s	≥ 0 KB/s	Monitored object: Proxy in a DCS Redis 3.0 instance Dimension: dcs_cluster_proxy_node	1 minute

DCS Memcached Instance Metrics

**Table 5** DCS Memcached instance metrics
Metric ID	Metric	Description	Value Range	Monitored Object and Dimension	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	CPU consumed by the monitored object Unit: %	0–100%	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object Unit: %	0–100%	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
net_in_throughput	Network Input Throughput	Inbound throughput per second on a port Unit: byte/s	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
net_out_throughput	Network Output Throughput	Outbound throughput per second on a port Unit: byte/s	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_used_memory	Used Memory	Number of bytes used by Memcached Unit: byte	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_used_memory_rss	Used Memory RSS	RSS memory used is the memory that actually resides in the memory, including all stack and heap memory but not swapped-out memory Unit: byte	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_used_memory_peak	Used Memory Peak	Peak memory consumed since the server last started Unit: byte	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation, which is the ratio between used_memory_rss/used_memory.	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_commands_processed	Commands Processed	Number of commands processed during the monitoring period	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_net_input_bytes	Network Input Bytes	Number of bytes received during the monitoring period Unit: byte	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_net_output_bytes	Network Output Bytes	Number of bytes sent during the monitoring period Unit: byte	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_instantaneous_input_kbps	Input Flow	Instantaneous input traffic Unit: KB/s	≥ 0 KB/s	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_instantaneous_output_kbps	Output Flow	Instantaneous output traffic Unit: KB/s	≥ 0 KB/s	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_rejected_connections	Rejected Connections	Number of connections that have exceeded maxclients and been rejected during the monitoring period	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cmd_get	Number of Retrieval Requests	Number of received data retrieval requests	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cmd_set	Number of Storage Requests	Number of received data storage requests	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cmd_flush	Number of Flush Requests	Number of received data clearance requests	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cmd_touch	Number of Touch Requests	Number of received requests for modifying the validity period of data	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_get_hits	Number of Retrieval Hits	Number of successful data retrieval operations	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_get_misses	Number of Retrieval Misses	Number of failed data retrieval operations due to key nonexistence	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_delete_hits	Number of Delete Hits	Number of successful data deletion operations	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_delete_misses	Number of Delete Misses	Number of failed data deletion operations due to key nonexistence	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_incr_hits	Number of Increment Hits	Number of successful increment operations	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_incr_misses	Number of Increment Misses	Number of failed increment operations due to key nonexistence	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_decr_hits	Number of Decrement Hits	Number of successful decrement operations	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_decr_misses	Number of Decrement Misses	Number of failed decrement operations due to key nonexistence	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cas_hits	Number of CAS Hits	Number of successful CAS operations	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cas_misses	Number of CAS Misses	Number of failed CAS operations due to key nonexistence	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_cas_badval	Number of CAS Values Not Matched	Number of failed CAS operations due to CAS value mismatch	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_touch_hits	Number of Touch Hits	Number of successful requests for modifying the validity period of data	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_touch_misses	Number of Touch Misses	Number of failed requests for modifying the validity period of data due to key nonexistence	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_auth_cmds	Authentication Requests	Number of authentication requests	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_auth_errors	Authentication Failures	Number of failed authentication requests	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_curr_items	Number of Items Stored	Number of stored data items	≥ 0	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_command_max_delay	Maximum Command Latency	Maximum latency of commands Unit: ms	≥ 0 ms	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the instance	1: yes 0: no	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute
mc_keyspace_hits_perc	Hit Rate	Ratio of the number of Memcached cache hits to the number of lookups Unit: %	0–100%	Monitored object: DCS Memcached instance Dimension: dcs_memcached_instance_id	1 minute