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| Redis支持多种类型的数据结构,如字符串(strings),散列(hashes), 列表(lists), 集合(sets), 有序集合(sorted sets)与范围查询,bitmaps,hyperloglogs和地理空间(geospatial)索引半径查询。 |
| |
| 我们的笔记中会主要介绍的到常用的数据类型,如:string,hash,list,set,sortset等。 |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> KEYS * |
| address |
| age |
| name |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> KEYS n* |
| name |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> KEYS * |
| name |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TYPE name |
| string |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TYPE stars |
| string |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> KEYS * |
| name |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> SET myname oldboyedu |
| OK |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TYPE myname |
| string |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL myname |
| -1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL myname |
| -1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| name |
| myname |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> KEYS * |
| name |
| myname |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL myname |
| -1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> EXPIRE myname 30 |
| 1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL myname |
| 26 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL myname |
| 23 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL myname |
| 5 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL myname |
| 3339 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL myname |
| 976 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL myname |
| -2 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL myname |
| -2 |
| 127.0.0.1:6379> KEYS * |
| name |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PEXPIRE name 30000 |
| 1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL name |
| 21008 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL name |
| 16003 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL name |
| 13 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL name |
| 12 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL name |
| 9 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL name |
| 7828 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL name |
| 5 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL name |
| 4 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL name |
| -2 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PTTL name |
| -2 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| |
| 温馨提示: |
| 生产环境中建议不要大批量的设置过期时间,比如有100w个KEY设置相同的过期时间,这意味着整个集群在某一时刻会有大量的创建和删除操作,这很容易导致集群出现"雪崩"现象。 |
| 综上所述,假设我们对100w个KEY做批量的过期时间设置,先不说Redis集群能否同时扛得住这种大批量读写。 |
| 先说说Redis的后端能够抗住,比如100w的KEY失效后,会去后端拉取最新的数据,这意味着同一时刻会将100w个KEY从后端数据库拉取到Redis集群中(这得开发写程序实现)。 |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> KEYS * |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL stars |
| -1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> EXPIRE stars 30 |
| 1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL stars |
| 29 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL stars |
| 25 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> PERSIST stars |
| 1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> TTL stars |
| -1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> KEYS * |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> EXISTS name |
| 0 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> SET name oldboyedu |
| OK |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> EXISTS name |
| 1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| name |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| name |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> GET name |
| oldboyedu |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> RENAME name myname |
| OK |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| myname |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> GET name |
| |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> GET myname |
| oldboyedu |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379> KEYS * |
| myname |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> DEL myname |
| 1 |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> KEYS * |
| stars |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> INFO # 若不指定section,则查看所有的section信息。 |
| |
| redis_version:3.2.13 |
| redis_git_sha1:00000000 |
| redis_git_dirty:0 |
| redis_build_id:2a6fbd16b3c9080c |
| redis_mode:standalone |
| os:Linux 3.10.0-1160.el7.x86_64 x86_64 |
| arch_bits:64 |
| multiplexing_api:epoll |
| gcc_version:4.8.5 |
| process_id:4536 |
| run_id:ef5ced7114802e96fb547eb0f46bf00de78d5e80 |
| tcp_port:6379 |
| uptime_in_seconds:141641 |
| uptime_in_days:1 |
| hz:10 |
| lru_clock:4035343 |
| executable:/root/redis-server |
| config_file:/oldboyedu/softwares/redis/conf/redis.conf |
| |
| |
| connected_clients:1 |
| client_longest_output_list:0 |
| client_biggest_input_buf:0 |
| blocked_clients:0 |
| |
| |
| used_memory:822304 |
| used_memory_human:803.03K |
| used_memory_rss:7950336 |
| used_memory_rss_human:7.58M |
| used_memory_peak:1197120 |
| used_memory_peak_human:1.14M |
| total_system_memory:3953963008 |
| total_system_memory_human:3.68G |
| used_memory_lua:37888 |
| used_memory_lua_human:37.00K |
| maxmemory:0 |
| maxmemory_human:0B |
| maxmemory_policy:noeviction |
| mem_fragmentation_ratio:9.67 |
| mem_allocator:jemalloc-4.0.3 |
| |
| |
| loading:0 |
| rdb_changes_since_last_save:0 |
| rdb_bgsave_in_progress:0 |
| rdb_last_save_time:1614647296 |
| rdb_last_bgsave_status:ok |
| rdb_last_bgsave_time_sec:0 |
| rdb_current_bgsave_time_sec:-1 |
| aof_enabled:1 |
| 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 |
| aof_current_size:359711 |
| aof_base_size:4350 |
| aof_pending_rewrite:0 |
| aof_buffer_length:0 |
| aof_rewrite_buffer_length:0 |
| aof_pending_bio_fsync:0 |
| aof_delayed_fsync:0 |
| |
| |
| total_connections_received:121 |
| total_commands_processed:3874 |
| instantaneous_ops_per_sec:0 |
| total_net_input_bytes:514304 |
| total_net_output_bytes:1364884 |
| instantaneous_input_kbps:0.00 |
| instantaneous_output_kbps:0.00 |
| rejected_connections:0 |
| sync_full:0 |
| sync_partial_ok:0 |
| sync_partial_err:0 |
| expired_keys:0 |
| evicted_keys:0 |
| keyspace_hits:259 |
| keyspace_misses:6 |
| pubsub_channels:0 |
| pubsub_patterns:0 |
| latest_fork_usec:520 |
| migrate_cached_sockets:0 |
| |
| |
| 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 |
| |
| |
| used_cpu_sys:102.92 |
| used_cpu_user:31.28 |
| used_cpu_sys_children:0.13 |
| used_cpu_user_children:0.01 |
| |
| |
| cluster_enabled:0 |
| |
| |
| db13:keys=3,expires=0,avg_ttl=0 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> INFO memory # 仅查看memory section的信息。 |
| |
| used_memory:821328 |
| used_memory_human:802.08K |
| used_memory_rss:7950336 |
| used_memory_rss_human:7.58M |
| used_memory_peak:1197120 |
| used_memory_peak_human:1.14M |
| total_system_memory:3953963008 |
| total_system_memory_human:3.68G |
| used_memory_lua:37888 |
| used_memory_lua_human:37.00K |
| maxmemory:0 |
| maxmemory_human:0B |
| maxmemory_policy:noeviction |
| mem_fragmentation_ratio:9.68 |
| mem_allocator:jemalloc-4.0.3 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> INFO cpu # 仅查看cpu section的信息。 |
| |
| used_cpu_sys:103.18 |
| used_cpu_user:31.28 |
| used_cpu_sys_children:0.13 |
| used_cpu_user_children:0.01 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> INFO Replication # 仅查看Replication section的信息。 |
| |
| 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 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| |
| 课堂练习1: |
| 请获取当前redis的连接数量。 |
| |
| 参考案例: |
| redis-cli -h 172.200.1.106 -a 666666 info Clients | awk -F ':' '$1~/connected_clients/{print $2}' |
| redis-cli -h 172.200.1.106 -a 666666 info Clients | awk -F ':' 'NR==2{print $2}' |
| |
| 课堂练习2: |
| 获取数据库,该库的KEY数量以及KEY的过期时间个数。格式为:"dbN:keys:expires"。 |
| |
| 参考案例: |
| redis-cli -h 172.200.1.106 -a 666666 info Keyspace | awk -F '[,:=]' '{print $1":"$3":"$5 }' | grep -v "Keyspace" |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> CLIENT LIST |
| id=125 addr=127.0.0.1:45010 fd=7 name= age=22 idle=22 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=126 addr=127.0.0.1:45012 fd=8 name= age=15 idle=15 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=127 addr=127.0.0.1:45014 fd=9 name= age=10 idle=10 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=128 addr=127.0.0.1:45016 fd=10 name= age=2 idle=0 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=client |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> CLIENT LIST |
| id=125 addr=127.0.0.1:45010 fd=7 name= age=123 idle=123 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=126 addr=127.0.0.1:45012 fd=8 name= age=116 idle=116 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=127 addr=127.0.0.1:45014 fd=9 name= age=111 idle=111 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=129 addr=127.0.0.1:45018 fd=10 name= age=2 idle=0 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=client |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> CLIENT KILL 127.0.0.1:45014 |
| OK |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> CLIENT LIST |
| id=125 addr=127.0.0.1:45010 fd=7 name= age=138 idle=138 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=126 addr=127.0.0.1:45012 fd=8 name= age=131 idle=131 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=command |
| id=129 addr=127.0.0.1:45018 fd=10 name= age=17 idle=0 flags=N db=13 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=client |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> CONFIG GET * |
| dbfilename |
| mydump.rdb |
| requirepass |
| oldboyedu2021 |
| masterauth |
| |
| unixsocket |
| |
| logfile |
| /oldboyedu/logs/redis/redis.log |
| pidfile |
| /var/run/redis.pid |
| slave-announce-ip |
| |
| maxmemory |
| 0 |
| maxmemory-samples |
| 5 |
| timeout |
| 0 |
| |
| ... |
| |
| appendonly |
| yes |
| dir |
| /oldboyedu/data/redis |
| save |
| 900 1 300 10 60 10000 |
| client-output-buffer-limit |
| normal 0 0 0 slave 268435456 67108864 60 pubsub 33554432 8388608 60 |
| unixsocketperm |
| 0 |
| slaveof |
| |
| notify-keyspace-events |
| |
| bind |
| 172.200.1.201 127.0.0.1 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> CONFIG GET a* |
| auto-aof-rewrite-percentage |
| 100 |
| auto-aof-rewrite-min-size |
| 67108864 |
| activerehashing |
| yes |
| aof-rewrite-incremental-fsync |
| yes |
| aof-load-truncated |
| yes |
| appendfsync |
| everysec |
| appendonly |
| yes |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> CONFIG GET bind |
| bind |
| 172.200.1.201 127.0.0.1 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~]# redis-cli -a oldboyedu2021 -n 13 --raw |
| 127.0.0.1:6379[13]> KEYS * |
| address |
| age |
| name |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> DBSIZE # 查看当前数据库的键值对数量 |
| 3 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> SET blog https://www.cnblogs.com/oldboyedu/ |
| OK |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> SET game LOL |
| OK |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> KEYS * |
| age |
| blog |
| name |
| address |
| game |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> DBSIZE |
| 5 |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> QUIT |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> KEYS * |
| age |
| blog |
| name |
| address |
| game |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> SELECT 1 |
| OK |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> SELECT 11 |
| OK |
| 127.0.0.1:6379[11]> |
| 127.0.0.1:6379[11]> SELECT 15 |
| OK |
| 127.0.0.1:6379[15]> |
| 127.0.0.1:6379[15]> |
| 127.0.0.1:6379[15]> SELECT 0 |
| OK |
| 127.0.0.1:6379> |
| 127.0.0.1:6379> SELECT 16 |
| ERR invalid DB index |
| |
| 127.0.0.1:6379> |
| 127.0.0.1:6379[15]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| |
| 温馨提示: |
| 如果想要自定义redis的个数,请修改"databases"的参数即可,默认为16. |
| (1)终端1执行的命令: |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> MONITOR |
| OK |
| |
| 1614653780.755058 [0 127.0.0.1:45042] "AUTH" "oldboyedu2021" |
| 1614653780.755121 [0 127.0.0.1:45042] "SELECT" "13" |
| 1614653780.757507 [13 127.0.0.1:45042] "COMMAND" |
| 1614653787.022958 [13 127.0.0.1:45042] "KEYS" "*" |
| |
| (2)终端2执行的命令: |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[13]> |
| 127.0.0.1:6379[13]> KEYS * |
| age |
| blog |
| name |
| address |
| game |
| 127.0.0.1:6379[13]> |
| |
| 温馨提示: |
| 生产环境中,如果我们想要记录Redis执行命令的记录用于后续日志审计,可以执行以下命令: |
| [root@redis201.oldboyedu.com ~] |
| [1] 19079 |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| OK |
| 1614653763.947586 [0 127.0.0.1:45040] "AUTH" "oldboyedu2021" |
| 1614653763.948008 [0 127.0.0.1:45040] "SELECT" "13" |
| 1614653763.949747 [13 127.0.0.1:45040] "COMMAND" |
| 1614653780.755058 [0 127.0.0.1:45042] "AUTH" "oldboyedu2021" |
| 1614653780.755121 [0 127.0.0.1:45042] "SELECT" "13" |
| 1614653780.757507 [13 127.0.0.1:45042] "COMMAND" |
| 1614653787.022958 [13 127.0.0.1:45042] "KEYS" "*" |
| (1)进入redis-cli交互式字符界面关闭Redis: |
| [root@redis201.oldboyedu.com ~]# ss -ntl |
| State Recv-Q Send-Q Local Address:Port Peer Address:Port |
| LISTEN 0 128 *:6379 *:* |
| LISTEN 0 128 *:22 *:* |
| LISTEN 0 128 [::]:6379 [::]:* |
| LISTEN 0 128 [::]:22 [::]:* |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# redis-cli |
| 127.0.0.1:6379> SHUTDOWN |
| 13125:M 25 Feb 19:27:00.343 # User requested shutdown... |
| 13125:M 25 Feb 19:27:00.343 * Saving the final RDB snapshot before exiting. |
| 13125:M 25 Feb 19:27:00.344 * DB saved on disk |
| 13125:M 25 Feb 19:27:00.344 # Redis is now ready to exit, bye bye... |
| not connected> |
| not connected> quit |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# ss -ntl |
| State Recv-Q Send-Q Local Address:Port Peer Address:Port |
| LISTEN 0 128 *:22 *:* |
| LISTEN 0 128 [::]:22 [::]:* |
| [root@redis201.oldboyedu.com ~]# |
| |
| (2)直接在redis-cli字符界面安装Redis: |
| [root@redis201.oldboyedu.com ~]# ss -ntl |
| State Recv-Q Send-Q Local Address:Port Peer Address:Port |
| LISTEN 0 128 *:6379 *:* |
| LISTEN 0 128 *:22 *:* |
| LISTEN 0 128 [::]:6379 [::]:* |
| LISTEN 0 128 [::]:22 [::]:* |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# redis-cli shutdown |
| 14154:M 25 Feb 19:29:07.636 # User requested shutdown... |
| 14154:M 25 Feb 19:29:07.636 * Saving the final RDB snapshot before exiting. |
| 14154:M 25 Feb 19:29:07.638 * DB saved on disk |
| 14154:M 25 Feb 19:29:07.638 # Redis is now ready to exit, bye bye... |
| [1]+ 完成 redis-server |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# ss -ntl |
| State Recv-Q Send-Q Local Address:Port Peer Address:Port |
| LISTEN 0 128 *:22 *:* |
| LISTEN 0 128 [::]:22 [::]:* |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# redis-cli -a oldboyedu2021 -n 1 --raw # 我们使用"-n"参数可以指定进入的数据库编号,若不指定默认进入的是编号为"0"的数据库 |
| 127.0.0.1:6379[1]> KEYS * |
| |
| 127.0.0.1:6379[1]> set name jason |
| OK |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> set age 18 |
| OK |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> KEYS * |
| age |
| name |
| 127.0.0.1:6379[1]> |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# redis-cli -a oldboyedu2021 -n 2 --raw |
| 127.0.0.1:6379[2]> KEYS * |
| |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> set address beijing |
| OK |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> set game lol |
| OK |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> KEYS * |
| address |
| game |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> quit |
| [root@redis201.oldboyedu.com ~]# |
| [root@redis201.oldboyedu.com ~]# redis-cli -a oldboyedu2021 -n 3 --raw # 我们使用"--raw"选项,是便于命令行支持中文输出 |
| 127.0.0.1:6379[3]> KEYS * |
| |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> set blog https://www.cnblogs.com/oldboyedu/ |
| OK |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> set name oldboyedu |
| OK |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> KEYS * |
| name |
| blog |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> QUIT |
| [root@redis201.oldboyedu.com ~]# |
| |
| 温馨提示: |
| 如果想要修改Redis数据库的个数,可以直接修改"databases"参数值即可。 |
| 如果redis是刚刚初始化,此时可以任意指定大于0的数字即可,比如"databases 3"。 |
| 如果redis已经将数据持久化到本地,且持久化的数据库使用了指定的数据库,比如使用了15号数据库,则我们自定义时需要指定的值大于它。 |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[1]> KEYS * |
| age |
| name |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> FLUSHDB |
| OK |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> KEYS * |
| |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> KEYS * |
| address |
| game |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[3]> KEYS * |
| name |
| blog |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> KEYS * |
| address |
| game |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[3]> KEYS * |
| name |
| blog |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[1]> KEYS * |
| |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> set name jason |
| OK |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> KEYS * |
| name |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> FLUSHALL |
| OK |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> KEYS * |
| |
| 127.0.0.1:6379[1]> |
| 127.0.0.1:6379[1]> QUIT |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> KEYS * |
| |
| 127.0.0.1:6379[2]> |
| 127.0.0.1:6379[2]> quit |
| [root@redis201.oldboyedu.com ~] |
| [root@redis201.oldboyedu.com ~] |
| 127.0.0.1:6379[3]> KEYS * |
| |
| 127.0.0.1:6379[3]> |
| 127.0.0.1:6379[3]> QUIT |
| [root@redis201.oldboyedu.com ~] |