String / 字符串
- APPEND key value
- DECR key
- DECRBY key decrement
- GET key
- GETRANGE key start end
- GETSET key value
- INCR key
- INCRBY key increment
- MGET key [key …]
- MSET key value [key value …]
- MSETNX key value [key value …]
- PSETEX key milliseconds value
- SET key value [EX seconds] [PX milliseconds] [NX|XX]
- SETEX key seconds value
- SETNX key value
- SETRANGE key offset value
- STRLEN key
- INCRBYFLOAT key increment