- RDB方式: 数据持久化的过程中可能存在大量额外内存消耗。
- AOF方式: 通过aof文件恢复数据库的过程慢。
- 对于内存有限的服务，数据持久化不会带来额外的内存消耗。
- 相对AOF方式，数据库的恢复更快。
- 由于对redis写入操作需要同步到leveldb，导致性能损耗(读操作不受影响)。
redis-cli backup dir(备份文件目录)
- 当备份目录中包含BACKUP.log文件并且文件中有SUCCESS字段，表示备份成功
| Key | |
|---|---|
| DEL | yes |
| DUMP | yes |
| EXISTS | yes |
| EXPIRE | no |
| EXPIREAT | no |
| KEYS | yes |
| MIGRATE | no |
| MOVE | no |
| OBJECT | yes |
| PERSIST | no |
| PEXPIRE | no |
| PEXPIREAT | no |
| PTTL | no |
| RANDOMKEY | yes |
| RENAME | no |
| RENAMENX | no |
| RESTORE | no |
| SORT | yes |
| TTL | no |
| TYPE | yes |
| SCAN | yes |
| String | |
|---|---|
| APPEND | yes |
| BITCOUNT | yes |
| BITOP | yes |
| DECR | yes |
| DECRBY | yes |
| GET | yes |
| GETBIT | yes |
| GETRANGE | yes |
| GETSET | yes |
| INCR | yes |
| INCRBY | yes |
| INCRBYFLOAT | yes |
| MGET | yes |
| MSET | yes |
| MSETNX | yes |
| PSETEX | no |
| SET | yes |
| SETBIT | yes |
| SETEX | no |
| SETNX | yes |
| SETRANGE | yes |
| STRLEN | yes |
| Hash | |
|---|---|
| HDEL | yes |
| HEXISTS | yes |
| HGET | yes |
| HGETALL | yes |
| HINCRBY | yes |
| HINCRBYFLOAT | yes |
| HKEYS | yes |
| HLEN | yes |
| HMGET | yes |
| HMSET | yes |
| HSET | yes |
| HSETNX | yes |
| HVALS | yes |
| HSCAN | yes |
| Set | |
|---|---|
| SADD | yes |
| SCARD | yes |
| SDIFF | yes |
| SDIFFSTORE | no |
| SINTER | yes |
| SINTERSTORE | no |
| SISMEMBERS | yes |
| SMEMBERS | yes |
| SMOVE | no |
| SPOP | no |
| SRANDMEMBER | yes |
| SREM | yes |
| SUNION | yes |
| SUNIONSTORE | no |
| SSCAN | yes |
| SortedSet | |
|---|---|
| ZADD | yes |
| ZCARD | yes |
| ZCOUNT | yes |
| ZINCRBY | yes |
| ZRANGE | yes |
| ZRANGEBYSCORE | yes |
| ZRANK | yes |
| ZREM | yes |
| ZREMRANGEBYRANK | yes |
| ZREMRANGEBYSCORE | yes |
| ZREVRANGE | yes |
| ZREVRANKBYSCORE | yes |
| ZREVRANK | yes |
| ZSCORE | yes |
| ZUNIONSTORE | no |
| ZINTERSTORE | no |
| ZSCAN | yes |
| ZRANGEBYLEX | yes |
| ZLEXCOUNT | yes |
| ZREMRANGEBYLEX | yes |