一、命令介绍
·服务端状态查询
·INFO：返回服务器各模块的运行统计信息（内存、CPU、客户端连接数、持久化状态、复制状态等），是最常用的全量诊断入口。
·DBSIZE：返回当前数据库的键总数。
·TIME：返回服务器当前时间戳。
·LASTSAVE：返回最后一次 RDB 持久化的时间戳。
·ROLE：返回当前节点在复制拓扑中的角色信息。
·配置与参数管理
·CONFIG GET / CONFIG SET：在运行时读取或动态修改服务端配置参数（SET 在管控类实例中通常受限）。
·CONFIG REWRITE：将运行时修改的配置持久化写入配置文件。
·CONFIG RESETSTAT：重置 INFO 统计计数器。
·性能诊断与慢查询分析
·SLOWLOG GET / SLOWLOG LEN / SLOWLOG RESET：查询、统计或清空慢查询日志，是排查性能问题的核心工具。
·LATENCY（DOCTOR / GRAPH / HELP / HISTORY / LATEST / RESET）：分析延迟事件，辅助性能调优。
·命令信息查询
COMMAND / COMMAND COUNT / COMMAND INFO / COMMAND GETKEYS / COMMAND GETKEYSANDFLAGS / COMMAND DOCS / COMMAND LIST：查询命令列表、命令参数、键提取规则和命令文档等元信息。
·数据库级别操作
·FLUSHDB / FLUSHALL：清空当前数据库或全部数据库（在管控类实例中通常受限）。
·MONITOR：实时输出服务端接收到的每一条命令（仅标准架构，适用于调试阶段）。
·持久化与客户端管理
·BGSAVE / BGREWRITEAOF / SAVE：触发后台或前台持久化操作。
·CLIENT LIST / CLIENT KILL / CLIENT PAUSE / CLIENT REPLY / CLIENT ID：管理客户端连接，查询或中断指定客户端。
更多信息请参见 Valkey 产品文档：Server 命令组。
二、命令支持概览
·基础命令：client list、client getname、client setname、command count、command info、command、config rewrite、config resetstat、config get、role、lastsave、dbsize、info、time、flushdb、flushall，Redis 2.8标准架构及4.0、5.0、6.2、7.0版本、Valkey 8.0、9.0的标准架构与集群架构均支持。
·高版本新增命令：command getkeysandflags、command docs、command list，仅 Redis 7.0 版本及 Valkey 8.0、9.0版本支持。
·仅标准架构支持：memory、slowlog 仅在标准架构下支持，集群架构不支持。monitor 在 Redis 6.2 版本暂不支持，其他版本仅标准架构支持。
·仅集群架构支持：cluster keyslot、cluster nodes、cluster getkeysinslot、cluster slots、cluster info、cluster countkeysinslot 仅集群架构支持。cluster shards 仅 Redis 7.0 及 Valkey 8.0、9.0的标准与集群架构支持。其他 cluster 子命令在所有版本均不支持。
·版本限定命令：command getkeys 在 Redis 2.8 不支持；lolwut 仅 Redis 5.0 及以上版本支持。
·全局不支持的命令：bgrewriteaof、bgsave、client kill、sync、psync、client pause、client reply、slaveof、config set、debug object、debug segfault、save、shutdown、module、failover、slowlog help 及全部 acl 系列命令。
·跨 Slot 限制：Server 族命令不存在跨 Slot 访问场景。
三、命令兼容性矩阵
Server 族命令在各版本与架构下的支持情况如下表所示（✓ 表示支持，✗ 表示不支持，— 表示该命令不存在跨 Slot 访问场景）。
注意：说明：
| 命令 | Valkey 9.0标准架构 | Valkey 9.0集群架构 | Redis 7.0/Valkey 8.0标准架构 | Redis 7.0/Valkey 8.0集群架构 | Redis 6.2标准架构 | Redis 6.2集群架构 | Redis 5.0标准架构 | Redis 5.0集群架构 | Redis 4.0标准架构 | Redis 4.0集群架构 | Redis 2.8标准架构 | 集群架构跨 Slot 支持 |
| bgrewriteaof | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| bgsave | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| client kill | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| sync | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| psync | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| client list | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| client getname | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| client pause | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| client reply | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| client setname | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| command count | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| command getkeys | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✗ | — |
| command info | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| command getkegysandflags | ✓ | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| command docs | ✓ | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| command list | ✓ | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| slaveof | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| config rewrite | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| config set | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| config resetstat | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| debug object | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| debug segfault | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| role | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| save | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| lastsave | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| shutdown | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| memory | ✗ | ✗ | ✗ | ✗ | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | ✗ | — |
| command | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| dbsize | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| info | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| time | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| config get | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| monitor | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| flushdb | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| flushall | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| slowlog | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | ✓ | — |
| module | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| lolwut | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | — |
| acl cat | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl deluser | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl genpass | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl help | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl list | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl load | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl log | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl save | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl setuser | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl users | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| acl whoami | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| failover | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |
| slowlog help | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | — |