aof文件堆积很多，这个怎么解决 #998
Description
问题描述（Issue Description）
我在尝试用redis-shake的最新版及降级到4.2.2这个版本后，目前我们源端全量同步的文件有4.5G，往目的端同步，已经持续24小时了，现在才同步到3.3G，查看磁盘空间占用很大，全是aof的文件占用空间大的。这个是正常的，我手动删除最早的aof文件可以吗，如下图
Please provide a brief description of the issue you encountered.
环境信息（Environment）
- RedisShake 版本（RedisShake Version）：4.2.2
- Redis 源端版本（Redis Source Version）：4.0.0
- Redis 目的端版本（Redis Destination Version）：4.0.0
- Redis 部署方式（standalone/cluster/sentinel）：sentinel
- 是否在云服务商实例上部署（Deployed on Cloud Provider）：是
日志信息（Logs）
如果有错误日志或其他相关日志，请在这里提供。
If there are any error logs or other relevant logs, please provide them here.
其他信息（Additional Information）
请提供任何其他相关的信息，如配置文件、错误信息或截图等。
[sync_reader]
cluster = false # set to true if source is a redis cluster
address = "10.18.251.241:6382" # when cluster is true, set address to one of the cluster node
username = "" # keep empty if not using ACL
password = "abc" # keep empty if no authentication is required
tls = false #
sync_rdb = true # set to false if you don't want to sync rdb
sync_aof = true # set to false if you don't want to sync aof
prefer_replica = false # set to true if you want to sync from replica node
try_diskless = false # set to true if you want to sync by socket and source repl-diskless-sync=yes
#[scan_reader]
#cluster = false # set to true if source is a redis cluster
#address = "127.0.0.1:6379" # when cluster is true, set address to one of the cluster node
#username = "" # keep empty if not using ACL
#password = "" # keep empty if no authentication is required
#tls = false
#dbs = [] # set you want to scan dbs such as [1,5,7], if you don't want to scan all
#scan = true # set to false if you don't want to scan keys
#ksn = false # set to true to enabled Redis keyspace notifications (KSN) subscription
#count = 1 # number of keys to scan per iteration
[rdb_reader]
filepath = "/tmp/dump.rdb"
[aof_reader]
filepath = "/tmp/.aof"
timestamp = 0 # subsecond
[redis_writer]
cluster = false # set to true if target is a redis cluster
sentinel = false # set to true if target is a redis sentinel
master = "" # set to master name if target is a redis sentinel
address = "10.27.253.240:6382" # when cluster is true, set address to one of the cluster node
username = "" # keep empty if not using ACL
password = "abc" # keep empty if no authentication is required
tls = false
off_reply = false # turn off the server reply
[filter]
Allow keys with specific prefixes or suffixes
Examples:
allow_key_prefix = ["user:", "product:"]
allow_key_suffix = [":active", ":valid"]
Leave empty to allow all keys
allow_key_prefix = []
allow_key_suffix = []
Block keys with specific prefixes or suffixes
Examples:
block_key_prefix = ["temp:", "cache:"]
block_key_suffix = [":tmp", ":old"]
Leave empty to block nothing
block_key_prefix = []
block_key_suffix = []
其它配置文件都是默认的。没有变动