redis碰到的问题

本文主要是介绍redis碰到的问题，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

SpringBoot整合redis 连接报错：
Unable to connect to Redis; nested exception is org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool; nested exception is io.lettuce.core.RedisConnectionException

解决方法：给访问redis设置密码
redis设置密码

终端中redis启动报错
WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
overcommit_memory 解决
给 /etc/sysctl.conf 配置文件中 添加 vm.overcommit_memory=1
并且

$ sysctl vm.overcommit_memory=1
vm.overcommit_memory = 1

再次查看配置，已经修改成1了
$ cat /proc/sys/vm/overcommit_memory 
1

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