redis
Khóa học miễn phí Redis – Server nhận dự án làm có lương
Redis – Server
Redis server commands are basically used to manage Redis server.
Example
Following example explains how we can get all statistics and information about the 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
Redis Server Commands
Following table lists some basic commands related to Redis server.
| Sr.No | Command & Description |
|---|---|
| 1 |
Asynchronously rewrites the append-only file |
| 2 |
Asynchronously saves the dataset to the disk |
| 3 |
Kills the connection of a client |
| 4 |
Gets the list of client connections to the server |
| 5 |
Gets the name of the current connection |
| 6 |
Stops processing commands from the clients for a specified time |
| 7 |
Sets the current connection name |
| 8 |
Gets an array of Cluster slot to node mappings |
| 9 |
Gets an array of Redis command details |
| 10 |
Gets total number of Redis commands |
| 11 |
Extracts the keys given a full Redis command |
| 12 |
Asynchronously saves the dataset to the disk |
| 13 |
Gets an array of specific Redis command details |
| 14 |
Gets the value of a configuration parameter |
| 15 |
Rewrites the configuration file with the in-memory configuration |
| 16 |
Sets a configuration parameter to the given value |
| 17 |
Resets the stats returned by INFO |
| 18 |
Returns the number of keys in the selected database |
| 19 |
Gets debugging information about a key |
| 20 |
Makes the server crash |
| 21 |
Removes all the keys from all databases |
| 22 |
Removes all the keys from the current database |
| 23 |
Gets information and statistics about the server |
| 24 |
Gets the UNIX time stamp of the last successful save to the disk |
| 25 |
Listens for all the requests received by the server in real time |
| 26 |
Returns the role of the instance in the context of replication |
| 27 |
Synchronously saves the dataset to the disk |
| 28 |
Synchronously saves the dataset to the disk and then shuts down the server |
| 29 |
Makes the server a slave of another instance, or promotes it as a master |
| 30 |
Manages the Redis slow queries log |
| 31 |
Command used for replication |
| 32 |
Returns the current server time |
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