現(xiàn)象
- 之前寫了一篇文章:Spring redis使用報錯Read timed out排查解決,解決超時問題
- 后面發(fā)現(xiàn)解決的不徹底,仍有報錯
- 詳細(xì)查看了下源碼,發(fā)現(xiàn)不同版本里,參數(shù)名不一樣,之前的參數(shù)設(shè)置,并沒有在新版本里生效
報錯一
- 核心報錯提示是這一句:
JedisConnectionException: java.net.SocketTimeoutException: Read timed out
- 使用jedis連接時,連接超時
SocketTimeout
,即與Redis服務(wù)器的連接超時
2023-03-29 10:54:38.186 ERROR 9136 --- [ntainer#7-0-C-1] c.n.r.service.IntersectionQueryService : Exception in getIntersectionById() with cause = 'redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out' and exception = 'java.net.SocketTimeoutException: Read timed out; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out'
org.springframework.data.redis.RedisConnectionFailureException: java.net.SocketTimeoutException: Read timed out; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out
at org.springframework.data.redis.connection.jedis.JedisExceptionConverter.convert(JedisExceptionConverter.java:65)
at org.springframework.data.redis.connection.jedis.JedisExceptionConverter.convert(JedisExceptionConverter.java:42)
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.jedis.JedisConnection.convertJedisAccessException(JedisConnection.java:187)
at org.springframework.data.redis.connection.jedis.JedisConnection.doWithJedis(JedisConnection.java:802)
at org.springframework.data.redis.connection.jedis.JedisConnection.doInvoke(JedisConnection.java:160)
at org.springframework.data.redis.connection.jedis.JedisConnection.lambda$new$0(JedisConnection.java:69)
at org.springframework.data.redis.connection.jedis.JedisInvoker$Synchronizer.invoke(JedisInvoker.java:1027)
at org.springframework.data.redis.connection.jedis.JedisInvoker$DefaultSingleInvocationSpec.getOrElse(JedisInvoker.java:946)
at org.springframework.data.redis.connection.jedis.JedisStringCommands.setEx(JedisStringCommands.java:176)
at org.springframework.data.redis.connection.DefaultedRedisConnection.setEx(DefaultedRedisConnection.java:334)
at org.springframework.data.redis.connection.DefaultStringRedisConnection.setEx(DefaultStringRedisConnection.java:1138)
at org.springframework.data.redis.core.DefaultValueOperations$8.potentiallyUsePsetEx(DefaultValueOperations.java:337)
at org.springframework.data.redis.core.DefaultValueOperations$8.doInRedis(DefaultValueOperations.java:330)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:223)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:190)
at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:97)
at org.springframework.data.redis.core.DefaultValueOperations.set(DefaultValueOperations.java:325)
at com.newatc.radar.service.IntersectionQueryService.getAllIntersections(IntersectionQueryService.java:70)
報錯二
- 核心報錯提示是這一句:
Error while validating pooled Jedis object
- 連接池內(nèi)的Jedis對象已經(jīng)失效或已經(jīng)關(guān)閉,沒有可用的jedis客戶端
2023-08-24 09:44:23.721 ERROR 92250 --- [ns-pool-evictor] redis.clients.jedis.JedisFactory : Error while validating pooled Jedis object.
redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out
at redis.clients.jedis.util.RedisInputStream.ensureFill(RedisInputStream.java:205)
at redis.clients.jedis.util.RedisInputStream.readByte(RedisInputStream.java:43)
at redis.clients.jedis.Protocol.process(Protocol.java:162)
at redis.clients.jedis.Protocol.read(Protocol.java:227)
at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:352)
at redis.clients.jedis.Connection.getStatusCodeReply(Connection.java:270)
at redis.clients.jedis.BinaryJedis.ping(BinaryJedis.java:380)
at redis.clients.jedis.JedisFactory.validateObject(JedisFactory.java:214)
at org.apache.commons.pool2.impl.GenericObjectPool.evict(GenericObjectPool.java:745)
at org.apache.commons.pool2.impl.BaseGenericObjectPool$Evictor.run(BaseGenericObjectPool.java:160)
at org.apache.commons.pool2.impl.EvictionTimer$WeakRunner.run(EvictionTimer.java:113)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.net.SocketTimeoutException: Read timed out
at java.base/java.net.SocketInputStream.socketRead0(Native Method)
at java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:115)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:168)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:126)
at redis.clients.jedis.util.RedisInputStream.ensureFill(RedisInputStream.java:199)
... 16 common frames omitted
2023-08-24 09:44:25.724 ERROR 92250 --- [ns-pool-evictor] redis.clients.jedis.JedisFactory : Error while validating pooled Jedis object.
redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out
at redis.clients.jedis.util.RedisInputStream.ensureFill(RedisInputStream.java:205)
at redis.clients.jedis.util.RedisInputStream.readByte(RedisInputStream.java:43)
at redis.clients.jedis.Protocol.process(Protocol.java:162)
at redis.clients.jedis.Protocol.read(Protocol.java:227)
at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:352)
at redis.clients.jedis.Connection.getStatusCodeReply(Connection.java:270)
at redis.clients.jedis.BinaryJedis.ping(BinaryJedis.java:380)
at redis.clients.jedis.JedisFactory.validateObject(JedisFactory.java:214)
at org.apache.commons.pool2.impl.GenericObjectPool.evict(GenericObjectPool.java:745)
at org.apache.commons.pool2.impl.BaseGenericObjectPool$Evictor.run(BaseGenericObjectPool.java:160)
at org.apache.commons.pool2.impl.EvictionTimer$WeakRunner.run(EvictionTimer.java:113)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.net.SocketTimeoutException: Read timed out
at java.base/java.net.SocketInputStream.socketRead0(Native Method)
at java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:115)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:168)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:126)
at redis.clients.jedis.util.RedisInputStream.ensureFill(RedisInputStream.java:199)
... 16 common frames omitted
解決
- 報錯是發(fā)生在我們的環(huán)境,事實上,我們的平臺并沒有那么高的并發(fā)量,只有一些造數(shù)據(jù)腳本在跑和調(diào)用redis
- 而且所有應(yīng)用服務(wù)和redis服務(wù),都在一個內(nèi)網(wǎng)環(huán)境里,不應(yīng)該有網(wǎng)絡(luò)波動的問題,但發(fā)生這個報錯時,使用可視化工具連接redis,可以發(fā)現(xiàn),Redis服務(wù)是正常的
- 最終發(fā)現(xiàn),是我們沒有針對新版本,配置好超時參數(shù)
- 原有配置
spring:
redis:
host: 192.168.1.50
port: 6379
password:
database: 0
jedis:
pool:
min-idle: 10
max-idle: 400
max-wait: 30000
max-active: 200
- 查看了源碼后發(fā)現(xiàn),少了對于redis客戶端連接維護(hù)的超時時間設(shè)置,這個超時時間默認(rèn)是2s,有時候是不夠用的
- 當(dāng)大并發(fā)量來臨,或者大量對象存儲更新時,阻塞可能會超過2s時,就會報錯
SocketTimeoutException
- 新的配置(時間可以寫毫秒,也可以帶單位)
-
spring.redis.timeout
:是指與redis服務(wù)器的讀寫超時時間,讀寫操作時會判斷這個 -
spring.redis.connect-timeout
:是指與redis服務(wù)器的連接超時時間,默認(rèn)2s,這個可以設(shè)置大一點,例如30s,保證短時的網(wǎng)絡(luò)波動不影響連接 -
spring.redis.jedis.pool.min-idle
:最小空閑連接,可以根據(jù)需要寫,我這里設(shè)置為8 -
spring.redis.jedis.pool.max-idle
:最大空閑連接,可以根據(jù)需要寫,我這里設(shè)置為200,夠用了 -
spring.redis.jedis.pool.max-wait
:連接池最大阻塞等待時間(使用負(fù)值表示沒有限制),這個是指服務(wù)從連接池獲取連接的等待時間,我這里設(shè)置為30s,夠用了 -
spring.redis.jedis.pool.max-active
:連接池最大連接數(shù)(使用負(fù)值表示沒有限制),根據(jù)我們的應(yīng)用數(shù)量設(shè)置,我這里設(shè)置256,足夠用了
spring:
redis:
host: 192.168.1.50
port: 6379
password:
database: 0
timeout: 30s # 讀寫超時
connect-timeout: 60s #連接超時
jedis:
pool:
min-idle: 8 # 最小空閑連接
max-idle: 200 # 最大空閑連接
max-wait: 30s # 連接池最大阻塞等待時間(使用負(fù)值表示沒有限制)
max-active: 256 # 連接池最大連接數(shù)(使用負(fù)值表示沒有限制)
- 總結(jié)一下,一開始只配置了參數(shù)
spring.redis.jedis.pool.max-wait
連接池最大阻塞等待時間,而沒有配置spring.redis.timeout
和spring.redis.connect-timeout
,導(dǎo)致偶發(fā)的超時 - 配置上這兩個參數(shù)后,就沒有遇到超時報錯了
- 最后再介紹下Jedis連接池吧
Jedis連接池
Jedis連接池是用于管理Jedis客戶端連接的一種機(jī)制。Jedis是一個非常流行的Java Redis客戶端,它允許Java開發(fā)人員與Redis服務(wù)器進(jìn)行交互。
Jedis連接池的目的是為了提高應(yīng)用程序與Redis服務(wù)器之間的性能和可擴(kuò)展性。通過連接池,應(yīng)用程序可以重復(fù)利用現(xiàn)有的連接而不是創(chuàng)建新的連接,從而減少連接的創(chuàng)建和銷毀的開銷。
Jedis連接池的實現(xiàn)中有幾個主要的組件:
-
連接池配置(Config):用于設(shè)置連接池的參數(shù),如最大連接數(shù)、最大空閑連接數(shù)、連接超時時間等。
-
連接池對象(JedisPool):用于創(chuàng)建和管理Jedis連接。
-
Jedis連接(Jedis):用于與Redis服務(wù)器進(jìn)行交互的對象。
連接池的工作原理如下:文章來源:http://www.zghlxwxcb.cn/news/detail-804561.html
- 初始化:當(dāng)連接池被創(chuàng)建時,它會根據(jù)配置參數(shù)建立一定數(shù)量的連接,并放入連接池中。
- 借用連接:當(dāng)應(yīng)用程序需要與Redis服務(wù)器進(jìn)行交互時,它可以從連接池中獲取一個空閑連接。
- 使用連接:應(yīng)用程序使用連接進(jìn)行操作,如執(zhí)行命令、讀寫數(shù)據(jù)等操作。
- 歸還連接:應(yīng)用程序完成操作后,將連接歸還給連接池,以便其他線程或請求可以繼續(xù)使用該連接。
- 連接池管理:連接池會根據(jù)預(yù)設(shè)的策略來管理連接的狀態(tài),如連接的獲取、釋放、逐出等。
使用Jedis連接池可以提高應(yīng)用程序與Redis服務(wù)器之間的性能和資源利用率。通過合理配置連接池的參數(shù),可以控制連接數(shù)、連接超時時間、最大空閑連接數(shù)等,以適應(yīng)不同規(guī)模的應(yīng)用程序需求。同時,連接池還可以提供連接的可用性檢查、自動重連、連接匯報等功能,提高應(yīng)用的可靠性和穩(wěn)定性。文章來源地址http://www.zghlxwxcb.cn/news/detail-804561.html
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