redis常用命令 redis set key redis get redis -cli redis setnx redis setex redis psetex redis getset redis strlen key redis append redis setrange key redis getrange key redis mset redis mget redis incr redis incrby redis decr redis decrby redis lpush key redis lrange key redis lpushx redis rpush redis rpushx redis lpop key redis rpop redis lrem key redis llen redis lindex key index redis linsert key before /after pivot value redis lset key index value redis ltrim redis hset key redis hsetnx key redis hget redis hexists redis hdel redis hlen redis hstrlen redis hincrby