哈市Hash:kv模式保持不变。但是v是键对
#============================ # hset hget 命令用于赋值哈希表中的字段 # hmset hmget 同时将多个field-value将哈希表中存在的字段设置在哈希表中 # hgetall 用于返回哈希表 所有字段和值 # hdel 用于删除哈希表key一个或多个指定字段 #============================ 127.0.0.1:6379> hset myhash field1 wyt (integer) 1 127.0.0.1:6379> hget myhash field1 "wyt" 127.0.0.1:6379> hmset myhash field1 lmp field2 hyd OK 127.0.0.1:6379> hget myhash field1 "lmp" 127.0.0.1:6379> hget myhash field2 "hyd" 127.0.0.1:6379> hgetall myhash 1) "field1" 2) "lmp" 3) "field2" 4) "hyd" 127.0.0.1:6379> hdel myhash field1 (integer) 1 127.0.0.1:6379> hgetall myhash 1) "field2" 2) "hyd" #============================ # hlen获得哈希表中字段的数量 #============================ 127.0.0.1:6379> hlen myhash (integer) 1 127.0.0.1:6379> hmset myhash field1 wyt field2 lmp OK 127.0.0.1:6379> hlen myhash (integer) 2 #============================ # hexists检查哈希表的指定字段是否存在 #============================ 127.0.0.1:6379> hexists myhash field1 (integer) 1 127.0.0.1:6379> hexists myhash field3 (integer) 0 #============================ # hkeys在哈希表I中获取所有域(field) # hvals 返回哈希表所有域(field)的值 #============================ 127.0.0.1:6379> hkeys myhash 1) "field2" 2) "field1" 127.0.0.1:6379> hvals myhash 1) "lmp" 2) "wyt" #============================ # hincrby将指定的增量值添加到哈希表中的字段值 #============================ 127.0.0.1:6379> hset myhash field 5 (integer) 1 127.0.0.1:6379> hincrby myhash field 1 (integer) 6 127.0.0.1:6379> hincrby myhash field -1 (integer) 5 127.0.0.1:6379> hincrby myhash field -10 (integer) -5 #============================ # hsetnx赋值哈希表中不存在的字段 #============================ 127.0.0.1:6379> hsetnx myhash field wyt (integer) 1 #设置成功 返回1 127.0.0.1:6379> hsetnx myhash field wyt (integer) 0 #如果给定的字段已经存在 返回0 127.0.0.1:6379> hget myhash field "wyt"
#============================
# hset hget 命令用于赋值哈希表中的字段
# hmset hmget 同时将多个field-value将哈希表中存在的字段设置在哈希表中
# hgetall 用于返回哈希表 所有字段和值
# hdel 用于删除哈希表key一个或多个指定字段
127.0.0.1:6379> hset myhash field1 wyt (integer) 1 127.0.0.1:6379> hget myhash field1 "wyt" 127.0.0.1:6379> hmset myhash field1 lmp field2 hyd OK 127.0.0.1:6379> hget myhash field1 "lmp" 127.0.0.1:6379> hget myhash field2 "hyd" 127.0.0.1:6379> hgetall myhash 1) "field1" 2) "lmp" 3) "field2" 4) "hyd" 127.0.0.1:6379> hdel myhash field1 (integer) 1 127.0.0.1:6379> hgetall myhash 1) "field2" 2) "hyd"
# hlen获得哈希表中字段的数量
127.0.0.1:6379> hlen myhash (integer) 1 127.0.0.1:6379> hmset myhash field1 wyt field2 lmp OK 127.0.0.1:6379> hlen myhash (integer) 2
# hexists检查哈希表的指定字段是否存在
127.0.0.1:6379> hexists myhash field1 (integer) 1 127.0.0.1:6379> hexists myhash field3 (integer) 0
# hkeys在哈希表I中获取所有域(field)
# hvals 返回哈希表所有域(field)的值
127.0.0.1:6379> hkeys myhash 1) "field2" 2) "field1" 127.0.0.1:6379> hvals myhash 1) "lmp" 2) "wyt"
# hincrby将指定的增量值添加到哈希表中的字段值
127.0.0.1:6379> hset myhash field 5 (integer) 1 127.0.0.1:6379> hincrby myhash field 1 (integer) 6 127.0.0.1:6379> hincrby myhash field -1 (integer) 5 127.0.0.1:6379> hincrby myhash field -10 (integer) -5
# hsetnx赋值哈希表中不存在的字段
127.0.0.1:6379> hsetnx myhash field wyt (integer) 1 #设置成功 返回1 127.0.0.1:6379> hsetnx myhash field wyt (integer) 0 #如果给定的字段已经存在 返回0 127.0.0.1:6379> hget myhash field "wyt"
标签: lmp331液压变送器