May 16, 2021 Redis
Redis server commands are primarily used to manage redis services.
The following example shows how to get statistics for a redis server:
redis 127.0.0.1:6379> INFO # Server redis_version:2.8.13 redis_git_sha1:00000000 redis_git_dirty:0 redis_build_id:c2238b38b1edb0e2 redis_mode:standalone os:Linux 3.5.0-48-generic x86_64 arch_bits:64 multiplexing_api:epoll gcc_version:4.7.2 process_id:3856 run_id:0e61abd297771de3fe812a3c21027732ac9f41fe tcp_port:6379 uptime_in_seconds:11554 uptime_in_days:0 hz:10 lru_clock:16651447 config_file: # Clients connected_clients:1 client-longest_output_list:0 client-biggest_input_buf:0 blocked_clients:0 # Memory used_memory:589016 used_memory_human:575.21K used_memory_rss:2461696 used_memory_peak:667312 used_memory_peak_human:651.67K used_memory_lua:33792 mem_fragmentation_ratio:4.18 mem_allocator:jemalloc-3.6.0 # Persistence loading:0 rdb_changes_since_last_save:3 rdb_bgsave_in_progress:0 rdb_last_save_time:1409158561 rdb_last_bgsave_status:ok rdb_last_bgsave_time_sec:0 rdb_current_bgsave_time_sec:-1 aof_enabled:0 aof_rewrite_in_progress:0 aof_rewrite_scheduled:0 aof_last_rewrite_time_sec:-1 aof_current_rewrite_time_sec:-1 aof_last_bgrewrite_status:ok aof_last_write_status:ok # Stats total_connections_received:24 total_commands_processed:294 instantaneous_ops_per_sec:0 rejected_connections:0 sync_full:0 sync_partial_ok:0 sync_partial_err:0 expired_keys:0 evicted_keys:0 keyspace_hits:41 keyspace_misses:82 pubsub_channels:0 pubsub_patterns:0 latest_fork_usec:264 # Replication role:master connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:1048576 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 # CPU used_cpu_sys:10.49 used_cpu_user:4.96 used_cpu_sys_children:0.00 used_cpu_user_children:0.01 # Keyspace db0:keys=94,expires=1,avg_ttl=41638810 db1:keys=1,expires=0,avg_ttl=0 db3:keys=1,expires=0,avg_ttl=0
The following table lists the commands for the redis server:
| Serial number | Commands and descriptions |
|---|---|
| 1 |
BGREWRITEAOF
Perform an AOF (AppendOnly File) file rewrite asynchronously |
| 2 |
BGSAVE
Save data from the current database asynchronously to disk in the background |
| 3 |
CLIENT KILL [ip:port] [ID client-id]
Close the client connection |
| 4 |
CLIENT LIST
Gets a list of client connections to the server |
| 5 |
CLIENT GETNAME
Gets the name of the connection |
| 6 |
CLIENT PAUSE timeout
The command from the client is terminated within a specified time |
| 7 |
CLIENT SETNAME connection-name
Set the name of the current connection |
| 8 |
CLUSTER SLOTS
Gets an array of maps of cluster nodes |
| 9 |
COMMAND
Get an array of Redis command details |
| 10 |
COMMAND COUNT
Gets the total number of Redis commands |
| 11 |
COMMAND GETKEYS
Gets all the keys for a given command |
| 12 |
TIME
Returns the current server time |
| 13 |
COMMAND INFO command-name [command-name ...]
Gets an array that specifies the description of the Redis command |
| 14 |
CONFIG GET parameter
Gets the value of the specified configuration parameter |
| 15 |
CONFIG REWRITE
Rewrite the redis.conf profile specified when the Redis server is started |
| 16 |
CONFIG SET parameter value
Modify the redis configuration parameters without restarting |
| 17 |
CONFIG RESETSTAT
Reset some of the statistics in the INFO command |
| 18 |
DBSIZE
Returns the number of keys for the current database |
| 19 |
DEBUG OBJECT key
Gets debug information for key |
| 20 |
DEBUG SEGFAULT
Let the Redis service crash |
| 21 |
FLUSHALL
Delete all keys for all databases |
| 22 |
FLUSHDB
Delete all keys from the current database |
| 23 |
INFO [section]
Get various information and statistics for the Redis server |
| 24 |
LASTSAVE
Returns the last time Redis successfully saved data to disk, in UNIX timestamp format |
| 25 |
MONITOR
Print out the commands received by the Redis server in real time for debugging |
| 26 |
ROLE
Returns the role to which the primary instance belongs |
| 27 |
SAVE
Save data asynchronously to the hard drive |
| 28 |
SHUTDOWN [NOSAVE] [SAVE]
Save data asynchronously to the hard disk and shut down the server |
| 29 |
SLAVEOF host port
Turn the current server into a slave server for the specified server |
| 30 |
SLOWLOG subcommand [argument]
Manage the slow logs for redis |
| 31 |
SYNC
Internal commands for copying functionality |