Spring-boot: Lettuce has bugs and can't connect to Redis (UnresolvedAddressException)

Created on 5 Sep 2018 · 12Comments · Source: spring-projects/spring-boot

application.yml

spring:
  redis:
    host: 127.0.0.1
    port: 6379

Got errors:

org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to 127.0.0.1:6379

  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:966)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:934)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:786)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:300)
  at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:132)
  at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:95)
  at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:82)
  at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:211)
  at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
  at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95)
  at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:48)
  at cn.xiaoman.recommendation.admin.test.HdfsTest.redisTest(HdfsTest.java:38)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.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:73)
  at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)
  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.access$000(ParentRunner.java:58)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
  at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
  at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
  at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
  at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
  at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
  at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
  at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to 127.0.0.1:6379
  at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56)
  at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:233)
  at io.lettuce.core.RedisClient.connectStandalone(RedisClient.java:253)
  at io.lettuce.core.RedisClient.connect(RedisClient.java:202)
  at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:56)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:959)
  ... 41 more
Caused by: java.nio.channels.UnresolvedAddressException
  at sun.nio.ch.Net.checkAddress(Net.java:101)
  at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622)
  at io.netty.channel.socket.nio.NioSocketChannel.doConnect(NioSocketChannel.java:242)
  at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:205)
  at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1226)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:50)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.ChannelOutboundHandlerAdapter.connect(ChannelOutboundHandlerAdapter.java:47)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:50)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:517)
  at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:970)
  at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:215)
  at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:166)
  at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:408)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:455)
  at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
  at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
  at java.lang.Thread.run(Thread.java:745)

If I use Jedis instead, anything is OK.

external-project invalid

Source

lovebing

Most helpful comment

Looks like you have netty 4.0 and 4.1 on the classpath. Please remove netty 4.0. This is, in any case, not a Spring Boot or Spring Data Redis issue.

mp911de on 5 Sep 2018

👍11

All 12 comments

Thanks for the report, but this is the issue tracker for Spring Boot and Lettuce is managed as a separate project. Its issue tracker is here. If I have misunderstood, and you have already determined that the problem is in Spring Boot rather than Lettuce, please share your findings with us and we can re-open this issue if necessary.

wilkinsona on 5 Sep 2018

Looks like you have netty 4.0 and 4.1 on the classpath. Please remove netty 4.0. This is, in any case, not a Spring Boot or Spring Data Redis issue.

mp911de on 5 Sep 2018

👍11

Agree with @mp911de .
This is not a Spring issue, cause I've been using Lettuce separately and I got this too. It's just you have netty 4.0( or lower ) and 4.1 on your classpath. Maybe lettuce should mention it in the documentation.

bethunebtj on 28 Feb 2019

👍2

me too?Then how to do?If I use Jedis instead, anything is OK. I don't understand @mp911de's means.

mambaJun on 17 May 2019

@xajhwj Lettuce depends on Netty for its network IO. If you have the same problem as @lovebing, then you have two different versions of Netty on the classpath; 4.0 and 4.1. You can use mvn dependency:tree or ./gradlew dependencies to check your project's dependencies and identify why that's happening and then update your pom.xml or build.gradle to exclude Netty 4.0. If you need any more help with this, please follow up on Gitter or Stack Overflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements.

wilkinsona on 17 May 2019

I am facing the same error (intermittently) - and I see I've only one netty in my classpath - what else I might be missing?

Thanks

```
compile - Dependencies for source set 'main' (deprecated, use 'implementation' instead).

+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
+--- org.yaml:snakeyaml:1.23
--- com.fasterxml.jackson.core:jackson-core:2.9.8

compileClasspath - Compile classpath for source set 'main'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 ()
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
+--- org.yaml:snakeyaml:1.23
--- com.fasterxml.jackson.core:jackson-core:2.9.8

compileOnly - Compile only dependencies for source set 'main'.
No dependencies

default - Configuration for default artifacts.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
+--- org.yaml:snakeyaml:1.23
--- com.fasterxml.jackson.core:jackson-core:2.9.8

implementation - Implementation only dependencies for source set 'main'. (n)
No dependencies

runtime - Runtime dependencies for source set 'main' (deprecated, use 'runtimeOnly' instead).
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
+--- org.yaml:snakeyaml:1.23
--- com.fasterxml.jackson.core:jackson-core:2.9.8

runtimeClasspath - Runtime classpath of source set 'main'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
+--- org.yaml:snakeyaml:1.23
--- com.fasterxml.jackson.core:jackson-core:2.9.8

runtimeElements - Elements of runtime for main. (n)
No dependencies

runtimeOnly - Runtime only dependencies for source set 'main'. (n)
No dependencies

shadow
No dependencies

testAnnotationProcessor - Annotation processors and their dependencies for source set 'test'.
No dependencies

testCompile - Dependencies for source set 'test' (deprecated, use 'testImplementation' instead).
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
| +--- org.yaml:snakeyaml:1.23
| --- com.fasterxml.jackson.core:jackson-core:2.9.8
--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
+--- net.bytebuddy:byte-buddy:1.4.26
+--- net.bytebuddy:byte-buddy-agent:1.4.26
--- org.objenesis:objenesis:2.4

testCompileClasspath - Compile classpath for source set 'test'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 ()
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10 -> 4.12
| | --- org.hamcrest:hamcrest-core:1.3
| --- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
| +--- org.yaml:snakeyaml:1.23
| --- com.fasterxml.jackson.core:jackson-core:2.9.8
+--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
+--- junit:junit:4.12 (*)
--- org.junit.jupiter:junit-jupiter-api:5.1.0
+--- org.apiguardian:apiguardian-api:1.0.0
+--- org.opentest4j:opentest4j:1.0.0
--- org.junit.platform:junit-platform-commons:1.1.0
--- org.apiguardian:apiguardian-api:1.0.0

testCompileOnly - Compile only dependencies for source set 'test'.
--- junit:junit:4.12
--- org.hamcrest:hamcrest-core:1.3

testImplementation - Implementation only dependencies for source set 'test'. (n)
--- org.junit.jupiter:junit-jupiter-api:5.1.0 (n)

testRuntime - Runtime dependencies for source set 'test' (deprecated, use 'testRuntimeOnly' instead).
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10
| | --- org.hamcrest:hamcrest-core:1.1
| --- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
| +--- org.yaml:snakeyaml:1.23
| --- com.fasterxml.jackson.core:jackson-core:2.9.8
--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
+--- net.bytebuddy:byte-buddy:1.4.26
+--- net.bytebuddy:byte-buddy-agent:1.4.26
--- org.objenesis:objenesis:2.4

testRuntimeClasspath - Runtime classpath of source set 'test'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
| +--- org.apache.httpcomponents:httpcore:4.4.9
| +--- commons-logging:commons-logging:1.2
| --- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
| +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
| --- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
| +--- io.reactivex:rxjava:1.1.9
| +--- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-transport:4.0.40.Final
| | --- io.netty:netty-buffer:4.0.40.Final
| | --- io.netty:netty-common:4.0.40.Final
| +--- io.netty:netty-handler:4.0.40.Final
| | +--- io.netty:netty-buffer:4.0.40.Final ()
| | +--- io.netty:netty-transport:4.0.40.Final ()
| | --- io.netty:netty-codec:4.0.40.Final
| | --- io.netty:netty-transport:4.0.40.Final ()
| --- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
| --- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
| +--- org.slf4j:slf4j-api:1.7.25
| +--- org.apache.logging.log4j:log4j-api:2.11.2
| --- org.apache.logging.log4j:log4j-core:2.11.2 ()
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
| +--- org.apache.httpcomponents:httpclient:4.5.5 ()
| +--- org.apache.httpcomponents:httpasyncclient:4.1.3
| | +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpcore-nio:4.4.6
| | | --- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
| | +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 ()
| | --- commons-logging:commons-logging:1.2
| +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
| +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 ()
| +--- com.googlecode.json-simple:json-simple:1.1.1
| | --- junit:junit:4.10 -> 4.12
| | --- org.hamcrest:hamcrest-core:1.3
| --- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
| +--- org.yaml:snakeyaml:1.23
| --- com.fasterxml.jackson.core:jackson-core:2.9.8
+--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
| +--- net.bytebuddy:byte-buddy:1.4.26
| +--- net.bytebuddy:byte-buddy-agent:1.4.26
| --- org.objenesis:objenesis:2.4
+--- org.junit.jupiter:junit-jupiter-api:5.1.0
| +--- org.apiguardian:apiguardian-api:1.0.0
| +--- org.opentest4j:opentest4j:1.0.0
| --- org.junit.platform:junit-platform-commons:1.1.0
| --- org.apiguardian:apiguardian-api:1.0.0
+--- org.junit.jupiter:junit-jupiter-engine:5.1.0
| +--- org.apiguardian:apiguardian-api:1.0.0
| +--- org.junit.platform:junit-platform-engine:1.1.0
| | +--- org.apiguardian:apiguardian-api:1.0.0
| | +--- org.junit.platform:junit-platform-commons:1.1.0 ()
| | --- org.opentest4j:opentest4j:1.0.0
| --- org.junit.jupiter:junit-jupiter-api:5.1.0 ()
--- org.junit.vintage:junit-vintage-engine:5.1.0
+--- org.apiguardian:apiguardian-api:1.0.0
+--- org.junit.platform:junit-platform-engine:1.1.0 ()
--- junit:junit:4.12 (*)

testRuntimeOnly - Runtime only dependencies for source set 'test'. (n)
+--- org.junit.jupiter:junit-jupiter-engine:5.1.0 (n)
--- org.junit.vintage:junit-vintage-engine:5.1.0 (n)

(*) - dependencies omitted (listed previously)

(n) - Not resolved (configuration is not meant to be resolved)
```

angkar on 21 Jun 2019

@angkar Please read our guidelines for contributing and the existing comments on the issue before adding one of your own. As already noted above, this is a Lettuce problem and has nothing to do with Spring Boot. Even more so in your case, as Spring Boot is not in your dependencies.

wilkinsona on 21 Jun 2019

Apologies - will move it to the lettuce issues

angkar on 21 Jun 2019

Looks like you have netty 4.0 and 4.1 on the classpath. Please remove netty 4.0. This is, in any case, not a Spring Boot or Spring Data Redis issue.

I meet the same problem conflict with hbase-client 1.2.0 thanks！

Marviszhao on 30 Mar 2020

I met the same problem conflict when I use spring-boot-starter-data-redis.

This is my RedisConfig

package org.xtj.question.questionOne.config;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;

@Component
public class RedisConfig {
    @Resource
    RedisTemplate<String, String> redisTemplate;


    public String get(String key) {
        if ("".equals(key)) {
            return null;
        }
        return redisTemplate.opsForValue().get(key);
    }

    public void set(String key, String value) {
        if ("".equals(key) || "".equals(value)) {
            return;
        }
        redisTemplate.opsForValue().set(key, value);
    }
}

and this is my application.yml

server:
  port: 80
spring:
  redis:
    host: *.*.*.* #I used my own server
    port: 6377
    database: 0
    timeout: 30000

and in my own server I can get the test value with the right key,when I through progress,It always appear this case.I am a new development，I had build another redis test again，but this case appeared again，please help me，thank you very much.

Hick-Salmon on 24 Dec 2020

org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to **here is my server IP:port**
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1553)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1461)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1247)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1230)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:979)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:359)
    at org.springframework.data.redis.core.RedisConnectionUtils.fetchConnection(RedisConnectionUtils.java:193)
    at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:144)
    at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:105)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:209)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:189)
    at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:96)
    at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:53)
    at org.xtj.question.questionOne.config.RedisConfig.get(RedisConfig.java:52)
    at org.xtj.question.questionOne.service.RedisService.get(RedisService.java:30)
    at org.xtj.question.questionOne.controller.RedisController.getValue(RedisController.java:15)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1061)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:961)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to **here is my server IP:port**
    at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78)
    at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56)
    at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:320)
    at io.lettuce.core.RedisClient.connect(RedisClient.java:211)
    at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:115)
    at java.base/java.util.Optional.orElseGet(Optional.java:362)
    at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:115)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1459)
    ... 64 more
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: /**here is my server IP:port**
Caused by: java.net.ConnectException: Connection refused: no further information
    at java.base/sun.nio.ch.Net.pollConnect(Native Method)
    at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:579)
    at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:820)
    at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330)
    at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:830)

Hick-Salmon on 24 Dec 2020

@Hick-Salmon I've edited your comment to improve the formatting. You might want to check out this Mastering Markdown guide for future reference.

Please don't ask for support here (see the guidelines for contributing that mention we prefer to use GitHub issues only for bugs and enhancements). This is connectivity issue to your redis server and nothing we can help you with here.