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.
Metric ID |
Metric |
Description |
Value Range |
Monitored Object and Dimension |
Monitoring Period (Raw Data) |
|---|---|---|---|---|---|
cpu_usage |
CPU Usage |
The monitored object's maximum CPU usage among multiple sampling values in a monitoring period 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. Calculation: keyspace_hits/(keyspace_hits + keyspace_misses) 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 |
|
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.
Metric ID |
Metric |
Description |
Value Range |
Monitored Object and Dimension |
Monitoring Period (Raw Data) |
|---|---|---|---|---|---|
cpu_usage |
CPU Usage |
The monitored object's maximum CPU usage among multiple sampling values in a monitoring period 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 |
|
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. Calculation: keyspace_hits/(keyspace_hits + keyspace_misses) 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 |
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 |
used_memory_dataset |
Used Memory Dataset |
Dataset memory that the Redis server has used |
≥ 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 server has used |
0–100% |
Monitored object: Single-node, master/standby, or cluster DCS Redis instance Dimension: dcs_instance_id |
1 minute |
Node Metrics of DCS Redis Instances
- 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.
Metric ID |
Metric |
Description |
Value Range |
Monitored Object and Dimension |
Monitoring Period (Raw Data) |
|---|---|---|---|---|---|
cpu_usage |
CPU Usage |
The monitored object's maximum CPU usage among multiple sampling values in a monitoring period Unit: % |
0–100% |
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
memory_usage |
Memory Usage |
Memory consumed by the monitored object Unit: % |
0–100% |
Monitored object: Redis Server of a 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
instantaneous_ops |
Ops per Second |
Number of commands processed per second |
≥ 0 |
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
pubsub_channels |
PubSub Channels |
Number of Pub/Sub channels |
≥ 0 |
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
pubsub_patterns |
PubSub Patterns |
Number of Pub/Sub patterns |
≥ 0 |
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
keyspace_hits_perc |
Hit Rate |
Ratio of the number of Redis cache hits to the number of lookups. Calculation: keyspace_hits/(keyspace_hits + keyspace_misses) Unit: % |
0–100% |
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
is_slow_log_exist |
Slow Query Logs |
Existence of slow query logs in the node |
|
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
keys |
Keys |
Number of keys in Redis |
≥ 0 |
Monitored object: Redis Server of a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 3.0, 4.0, or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
ms_repl_offset |
Replication Gap |
Data synchronization gap between the master and the replica |
- |
Monitored object: Replica of a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id 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 a cluster DCS Redis 4.0 or 5.0 instance Dimension: dcs_instance_id dcs_cluster_redis_node |
1 minute |
Metric ID |
Metric |
Description |
Value Range |
Monitored Object and Dimension |
Monitoring Period (Raw Data) |
|---|---|---|---|---|---|
cpu_usage |
CPU Usage |
The monitored object's maximum CPU usage among multiple sampling values in a monitoring period Unit: % |
0–100% |
Monitored object: Proxy in a Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id dcs_cluster_proxy_node |
1 minute |
memory_usage |
Memory Usage |
Memory consumed by the monitored object Unit: % |
0–100% |
Monitored object: Proxy in a Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id dcs_cluster_proxy_node |
1 minute |
p_connected_clients |
Connected Clients |
Number of connected clients |
≥ 0 |
Monitored object: Proxy in a Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id 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 Proxy Cluster DCS Redis 3.0 instance Dimension: dcs_instance_id dcs_cluster_proxy_node |
1 minute |
DCS Memcached Instance Metrics
Metric ID |
Metric |
Description |
Value Range |
Monitored Object and Dimension |
Monitoring Period (Raw Data) |
|---|---|---|---|---|---|
cpu_usage |
CPU Usage |
The monitored object's maximum CPU usage among multiple sampling values in a monitoring period 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 |
|
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 |
Dimensions
Key |
Value |
|---|---|
dcs_instance_id |
DCS Redis instance |
dcs_cluster_redis_node |
Redis Server |
dcs_cluster_proxy_node |
Proxy |
dcs_memcached_instance_id |
DCS Memcached instance |
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