如何知道Redis命令是写还是只读？

Question

我的意思是是否有一个用于检查redis命令是否为只读的命令？

is_readonly(command)

如果杰迪斯有命令，那会更好。

Answer 1

使用COMMAND您可以获得带有命令标志（如readonly的所有命令的列表

所以这是我最终得到的清单：

publish bgsave sunion readonly exists hstrlen lindex scan ping latency ttl wait zscore zrevrangebylex sscan geohash getbit hkeys zrange monitor llen save auth zcard shutdown sync dbsize subscribe zrangebylex zlexcount mget getrange bitpos config lrange replconf discard asking client pfselftest bgrewriteaof unsubscribe zrank readwrite hget bitcount randomkey time zrevrank sinter dump strlen unwatch smembers georadius lastsave slowlog sismember hexists multi sdiff geopos hscan script keys hvals pfcount zscan echo command select zcount substr pttl hlen info scard geodist srandmember hgetall cluster psync pubsub psubscribe zrevrange hmget object watch zrangebyscore get type zrevrangebyscore punsubscribe georadiusbymember

尽管您可能希望排除只读管理命令-它们不会更改数据，但会导致副作用。 这是排除管理员的列表：

publish sunion readonly exists hstrlen lindex scan ping ttl wait zscore zrevrangebylex sscan geohash getbit hkeys zrange llen auth zcard dbsize subscribe zrangebylex zlexcount mget getrange bitpos lrange discard asking client pfselftest unsubscribe zrank readwrite hget bitcount randomkey time zrevrank sinter dump strlen unwatch smembers georadius lastsave slowlog sismember hexists multi sdiff geopos hscan script keys hvals pfcount zscan echo command select zcount substr pttl hlen info scard geodist srandmember hgetall pubsub psubscribe zrevrange hmget object watch zrangebyscore get type zrevrangebyscore punsubscribe georadiusbymember

更多信息，请参见： http : //redis.io/commands/command#examples

我认为您可能还会检查哪些命令可用于特定的Redis服务器版本。