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Cluster cluster addslots(集群 槽位) cluster count failure reports(集群计数失败报告) cluster countkeysinslot cluster delslots cluster failover cluster forget cluster getkeysinslot cluster info cluster keyslot(集群键槽) cluster meet cluster nodes(集群节点) cluster replicate(集群复制) 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
Figuren

HINCRBYFLOAT key field increment

自2.6.0起可用。

时间复杂度: O(1)

按指定增加field存储在指定位置的哈希key,并表示浮点数increment。如果增量值为负值,则结果是使散列字段值递减而不递增。如果该字段不存在,则0在执行操作之前将其设置为。如果发生以下情况之一,则会返回错误:

  • 该字段包含错误类型的值(不是字符串)。

  • 当前字段内容或指定的增量不可解析为双精度浮点数。

此命令的确切行为与 INCRBYFLOAT 命令的完全相同,请参阅 INCRBYFLOAT 文档以获取更多信息。

返回值

批量字符串回复: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"

实施细节

该命令始终在复制链接和仅附加文件中作为 HSET 操作进行传播,因此基础浮点数学实现中的差异不会成为不一致性的来源。

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