Question

拥有REDIS_CMD_WRITE属性的命令的表现是会修改Redis数据库的数据。一个只读的从数据库会拒绝执行拥有REDIS_CMD_WRITE属性的命令，另外在Lua脚本中执行了拥有REDIS_CMD_RANDOM属性（见A.4）的命令后，不可以再执行拥有REDIS_CMD_WRITE属性的命令，否则会提示错误：“Write commands not allowed after non deterministic commands.”

拥有REDIS_CMD_WRITE 属性的命令如下：

SET

SETNX

SETEX

PSETEX

APPEND

DEL

SETBIT

SETRANGE

INCR

DECR

RPUSH

LPUSH

RPUSHX

LPUSHX

LINSERT

RPOP

LPOP

BRPOP

BRPOPLPUSH

BLPOP

LSET

LTRIM

LREM

RPOPLPUSH

SADD

SREM

SMOVE

SPOP

SINTERSTORE

SUNIONSTORE

SDIFFSTORE

ZADD

ZINCRBY

ZREM

ZREMRANGEBYSCORE

ZREMRANGEBYRANK

ZUNIONSTORE

ZINTERSTORE

HSET

HSETNX

HMSET

HINCRBY

HINCRBYFLOAT

HDEL

INCRBY

DECRBY

INCRBYFLOAT

GETSET

MSET

MSETNX

MOVE

RENAME

RENAMENX

EXPIRE

EXPIREAT

PEXPIRE

PEXPIREAT

FLUSHDB

FLUSHALL

SORT

PERSIST

RESTORE

MIGRATE

BITOP