###################################
redis的目录结构：
[work@a8-dba-cloud-db00.wh ~]$ tree redis_7007
redis_7007
├── bin
│ ├── redis-benchmark
│ ├── redis-check-aof -> redis-server
│ ├── redis-check-rdb -> redis-server
│ ├── redis-cli
│ ├── redis-sentinel -> redis-server
│ └── redis-server
├── data
│ ├── appendonlydir
│ │ ├── appendonly-7007.aof.3.base.rdb
│ │ ├── appendonly-7007.aof.3.incr.aof
│ │ └── appendonly-7007.aof.manifest
│ ├── dump-7007.rdb
│ └── nodes-7007.conf
├── etc
│ └── redis.conf
├── log
│ └── redis-7007.log
└── tmp
└── redis-7007.pid
6 directories, 14 files
[work@a8-dba-cloud-db00.wh ~]$
redis.conf配置文件中：
save 3600 1 300 100 60 10000
redis_7007/log/redis-7007.log：
16711:S 16 Feb 2023 10:57:25.708 * 10000 changes in 60 seconds. Saving...
16711:S 16 Feb 2023 10:57:25.709 * Background saving started by pid 20308
20308:C 16 Feb 2023 10:57:25.849 * DB saved on disk
20308:C 16 Feb 2023 10:57:25.850 * Fork CoW for RDB: current 4 MB, peak 4 MB, average 3 MB
16711:S 16 Feb 2023 10:57:25.853 * Background saving terminated with success
16711:S 16 Feb 2023 10:58:48.964 * 10000 changes in 60 seconds. Saving...
16711:S 16 Feb 2023 10:58:48.965 * Background saving started by pid 13522
13522:C 16 Feb 2023 10:58:49.144 * DB saved on disk
13522:C 16 Feb 2023 10:58:49.145 * Fork CoW for RDB: current 5 MB, peak 5 MB, average 3 MB
16711:S 16 Feb 2023 10:58:49.152 * Background saving terminated with success
说明触发了60秒内有10000次的变更，因此需要for一个进程来进行RDB的持久化
