背景
在运行某系统时，在测试类向redis中存入某值，然后取出。
一、遇到的问题
报错：
org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.Redis***mandExecutionException: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. ***mands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54)
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52)
原因：
因为强制把redis快照关闭了导致不能持久化的问题，通过stop-writes-on-bgsave-error值设置为no即可避免这种问题。
二、解决方法
方法1：命令行方式
通过远程连接redis，然后使用命令行工具进行配置
config set stop-writes-on-bgsave-error no
方法2：修改redis.conf文件
vim打开redis-server配置的redis.conf文件，然后使用快捷匹配模式：/stop-writes-on-bgsave-error定位到stop-writes-on-bgsave-error字符串所在位置，接着把后面的yes设置为no即可。
使用docker安装的redis也是类似的。
效果如下：
附件
详细报错：
org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.Redis***mandExecutionException: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. ***mands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54)
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52)
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44)
at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42)
at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceA***essException(LettuceConnection.java:272)
at org.springframework.data.redis.connection.lettuce.LettuceConnection.await(LettuceConnection.java:1063)
at org.springframework.data.redis.connection.lettuce.LettuceConnection.lambda$doInvoke$4(LettuceConnection.java:920)
at org.springframework.data.redis.connection.lettuce.LettuceInvoker$Synchronizer.invoke(LettuceInvoker.java:673)
at org.springframework.data.redis.connection.lettuce.LettuceInvoker$DefaultSingleInvocationSpec.get(LettuceInvoker.java:589)
at org.springframework.data.redis.connection.lettuce.LettuceString***mands.set(LettuceString***mands.java:123)
at org.springframework.data.redis.connection.DefaultedRedisConnection.set(DefaultedRedisConnection.java:313)
at org.springframework.data.redis.core.DefaultValueOperations$7.inRedis(DefaultValueOperations.java:309)
at org.springframework.data.redis.core.AbstractOperations$ValueDeserializingRedisCallback.doInRedis(AbstractOperations.java:61)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:223)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:190)
at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:97)
at org.springframework.data.redis.core.DefaultValueOperations.set(DefaultValueOperations.java:305)
at ***.nxg.lottery.infrastructure.util.RedisUtil.set(RedisUtil.java:113)
at ***.nxg.lottery.test.infrastructure.RedisUtilTest.test_set(RedisUtilTest.java:31)
at sun.reflect.NativeMethodA***essorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodA***essorImpl.invoke(NativeMethodA***essorImpl.java:62)
at sun.reflect.DelegatingMethodA***essorImpl.invoke(DelegatingMethodA***essorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.a***ess$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at ***.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at ***.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at ***.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at ***.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at ***.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at ***.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: io.lettuce.core.Redis***mandExecutionException: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. ***mands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:137)
at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:110)
at io.lettuce.core.protocol.Async***mand.***pleteResult(Async***mand.java:120)
at io.lettuce.core.protocol.Async***mand.***plete(Async***mand.java:111)
at io.lettuce.core.protocol.***mandHandler.***plete(***mandHandler.java:746)
at io.lettuce.core.protocol.***mandHandler.decode(***mandHandler.java:681)
at io.lettuce.core.protocol.***mandHandler.channelRead(***mandHandler.java:598)
at io.***ty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.***ty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.***ty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.***ty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.***ty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.***ty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.***ty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.***ty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.***ty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
at io.***ty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
at io.***ty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
at io.***ty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
at io.***ty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.***ty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.***ty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
