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Cluster cluster addslots(集群 槽位) cluster count failure reports(集群計數(shù)失敗報告) 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) 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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HINCRBYFLOAT key field increment

自2.6.0起可用。

時間復(fù)雜度: O(1)

按指定增加field存儲在指定位置的哈希key,并表示浮點數(shù)increment。如果增量值為負(fù)值,則結(jié)果是使散列字段值遞減而不遞增。如果該字段不存在,則0在執(zhí)行操作之前將其設(shè)置為。如果發(fā)生以下情況之一,則會返回錯誤:

  • 該字段包含錯誤類型的值(不是字符串)。

  • 當(dāng)前字段內(nèi)容或指定的增量不可解析為雙精度浮點數(shù)。

此命令的確切行為與 INCRBYFLOAT 命令的完全相同,請參閱 INCRBYFLOAT 文檔以獲取更多信息。

返回值

批量字符串回復(fù):field增量后的值。

例子

redis>  HSET mykey field 10.50 (integer) 1 

redis>  HINCRBYFLOAT mykey field 0.1 "10.6" 

redis>  HINCRBYFLOAT mykey field -5 "5.6" 

redis>  HSET mykey field 5.0e3 (integer) 0 

redis>  HINCRBYFLOAT mykey field 2.0e2 "5200"

實施細(xì)節(jié)

該命令始終在復(fù)制鏈接和僅附加文件中作為 HSET 操作進(jìn)行傳播,因此基礎(chǔ)浮點數(shù)學(xué)實現(xiàn)中的差異不會成為不一致性的來源。

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