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Cluster cluster addslots(集群 槽位) cluster count failure reports(集群計(jì)數(shù)失敗報(bào)告) cluster countkeysinslot cluster delslots cluster failover cluster forget cluster getkeysinslot cluster info cluster keyslot(集群鍵槽) cluster meet cluster nodes(集群節(jié)點(diǎn)) cluster replicate(集群復(fù)制) cluster reset(集群重置) cluster saveconfig cluster set config epoch cluster setslot cluster slaves cluster slots readonly readwrite Connection auth echo ping quit select swapdb Geo geoadd geodist geohash geopos georadius georadiusbymember Hashes hdel hexists hget hgetall hincrby hincrbyfloat hkeys hlen hmget hmset hscan hset hsetnx hstrlen hvals HyperLogLog pfadd pfcount pfmerge Keys del dump exists expire expireat keys migrate move object persist pexpire pexpireat pttl randomkey rename renamenx restore scan sort touch ttl type unlink wait Lists blpop brpop brpoplpush lindex linsert llen lpop lpush lpushx lrange lrem lset ltrim rpop rpoplpush rpush rpushx Pub/Sub psubscribe publish pubsub punsubscribe subscribe unsubscribe Scripting eval evalsha script debug script exists script flush script kill script load Server bgrewriteaof bgsave client getname client kill client list client pause client reply client setname command command count command getkeys command info config get config resetstat config rewrite config set dbsize debug object debug segfault flushall flushdb info lastsave monitor role save shutdown slaveof slowlog time Sets sadd scard sdiff sdiffstore sinter sinterstore sismember smembers smove spop srandmember srem sscan sunion sunionstore Sorted Sets zadd zcard zcount zincrby zinterstore zlexcount zrange zrangebylex zrangebyscore zrank zrem zremrangebylex zremrangebyrank zremrangebyscore zrevrange zrevrangebylex zrevrangebyscore zrevrank zscan zscore zunionstore Strings append bitcount bitfield bitop bitpos decr decrby get getbit getrange getset incr incrby incrbyfloat mget mset msetnx psetex set setbit setex setnx setrange strlen Transactions discard exec multi unwatch watch
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CLUSTER SET-CONFIG-EPOCH config-epoch

自3.0.0起可用。

時(shí)間復(fù)雜度: O(1)

該命令在新節(jié)點(diǎn)中設(shè)置特定的配置時(shí)期。它只適用于以下情況:

1. 節(jié)點(diǎn)的節(jié)點(diǎn)表是空的。

2. 節(jié)點(diǎn)當(dāng)前配置時(shí)期為零。

這些先決條件是必需的,因?yàn)橥ǔG闆r下,手動(dòng)更改節(jié)點(diǎn)的配置時(shí)期是不安全的,我們希望確保具有較高配置時(shí)期值(即最后一次故障切換)的節(jié)點(diǎn)勝過其他節(jié)點(diǎn)聲稱散列槽所有權(quán)。

但是,此規(guī)則有一個(gè)例外,并且是從頭開始創(chuàng)建新群集的時(shí)候。Redis 集群配置時(shí)期沖突解決算法可以在啟動(dòng)時(shí)處理所有使用相同配置配置的新節(jié)點(diǎn),但是此過程很慢并且應(yīng)該是例外,只是為了確保無論發(fā)生什么情況,兩個(gè)以上的節(jié)點(diǎn)最終總是遠(yuǎn)離狀態(tài)具有相同的配置時(shí)期。

因此,使用CONFIG SET-CONFIG-EPOCH,在創(chuàng)建新群集時(shí),我們可以在將群集加入到一起之前為每個(gè)節(jié)點(diǎn)分配一個(gè)不同的漸進(jìn)配置歷元。

返回值

簡單的字符串回復(fù):OK如果命令執(zhí)行成功,否則返回錯(cuò)誤。

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