redis動態擴展內存

需求：將redis內存從1G擴展到3G，不中斷服務

1、打開客戶端

# redis-cli -p 6391

2、查看當前值

redis 127.0.0.1:6391> config get maxmemory
1) "maxmemory"
2) "1073741824"

3、設置內存為3G

redis 127.0.0.1:6391> config set maxmemory 3221225472

4、查看修改后的值

redis 127.0.0.1:6391> config get maxmemory
1) "maxmemory"
2) "3221225472"

5、修改配置文件，讓配置重啟有效

# vim /nh/redis/6391/conf/redis.conf
maxmemory 3221225472