TemplateEngine may cause memory leak while connection interrupted

### Prerequisites

- [x] I have searched for related issues in the [issues](https://github.com/halo-dev/halo/issues) list.
- [x] This is an issue with the Halo project itself. If it is not an issue with the project itself(For example: Installation and deployment issues.), it is recommended to submit it in the [Discussions](https://github.com/halo-dev/halo/discussions).
- [x] I have tried disabling all plugins to rule out plugins as the cause of the problem.
- [x] If it is an issue with plugins and themes, please submit it in the respective plugin and theme repositories.

### System information

- External url: 
- Start time: 2025-03-13 10:21
- Version: 2.20.16
- Build time: 2025-03-10 23:43
- Git Commit: 646d1e9
- Java: IBM Semeru Runtime Open Edition / 21.0.6+7-LTS
- Database: H2 / 2.3.232
- Operating system: Linux / 6.13.5-200.fc41.x86_64
- Activated theme: [Earth 1.11.0](https://github.com/halo-dev/theme-earth)
- Enabled plugins:
  - [瞬间 1.9.0](https://github.com/halo-sigs/plugin-moments)
  - [Meilisearch 2.0.1](https://github.com/Rainsheep/halo-plugin-meilisearch)
  - [搜索组件 1.6.2](https://github.com/halo-dev/plugin-search-widget)
  - [Sitemap 1.1.2](https://github.com/halo-dev/plugin-sitemap)
  - [RSS 1.4.3](https://github.com/halo-dev/plugin-feed)
  - [评论组件 2.5.1](https://github.com/halo-dev/plugin-comment-widget)
  - [应用市场 1.9.1](https://www.halo.run/store/apps/app-VYJbF)

### What is the project operation method?

Docker

### What happened?

TemplateEngine may cause memory leak while the connection is closed during template processing.

Related issue(s):
- https://github.com/halo-dev/halo/issues/5983

### Reproduce Steps

1. Execute command `ab -c 100 -n 1000 -H 'Accept: text/html' -H 'Cache-Control: no-cache' http://localhost:8090/` and then press `Ctrl + C` to stop the thread.
2. See logs in Halo


### Relevant log output

```shell
2025-03-13T10:38:31.961+08:00 ERROR 2 --- [dedElastic-2846] org.thymeleaf.TemplateEngine             : [THYMELEAF][loomBoundedElastic-2846] Exception processing throttled template "error/error": Exception evaluating SpringEL expression: "postFinder.list(1,10)" (template: "modules/widgets/popular-posts" - line 9, col 76)

org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "postFinder.list(1,10)" (template: "modules/widgets/popular-posts" - line 9, col 76)
	at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:292) ~[thymeleaf-spring6-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at run.halo.app.theme.ReactiveSpelVariableExpressionEvaluator.evaluate(ReactiveSpelVariableExpressionEvaluator.java:36) ~[classes/:2.20.16]
	at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:125) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.standard.processor.StandardWithTagProcessor.doProcess(StandardWithTagProcessor.java:93) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:300) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.StandaloneElementTagModelProcessable.process(StandaloneElementTagModelProcessable.java:114) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.queueProcessable(ProcessorTemplateHandler.java:2106) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:1179) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:300) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.IteratedGatheringModelProcessable.processIterationModel(IteratedGatheringModelProcessable.java:368) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.IteratedGatheringModelProcessable.process(IteratedGatheringModelProcessable.java:222) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.queueProcessable(ProcessorTemplateHandler.java:2106) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleCloseElement(ProcessorTemplateHandler.java:1642) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.CloseElementTag.beHandled(CloseElementTag.java:139) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:300) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.StandaloneElementTagModelProcessable.process(StandaloneElementTagModelProcessable.java:114) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.queueProcessable(ProcessorTemplateHandler.java:2106) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:1179) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:300) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.OpenElementTagModelProcessable.process(OpenElementTagModelProcessable.java:110) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handlePending(ProcessorTemplateHandler.java:2054) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ThrottledTemplateProcessor.process(ThrottledTemplateProcessor.java:230) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.engine.ThrottledTemplateProcessor.process(ThrottledTemplateProcessor.java:200) ~[thymeleaf-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.spring6.SpringWebFluxTemplateEngine$StreamThrottledTemplateProcessor.process(SpringWebFluxTemplateEngine.java:720) ~[thymeleaf-spring6-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.thymeleaf.spring6.SpringWebFluxTemplateEngine.lambda$createChunkedStream$2(SpringWebFluxTemplateEngine.java:269) ~[thymeleaf-spring6-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at reactor.core.publisher.FluxGenerate$GenerateSubscription.slowPath(FluxGenerate.java:271) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxGenerate$GenerateSubscription.request(FluxGenerate.java:213) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.request(FluxPeekFuseable.java:144) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.requestUpstream(FluxSubscribeOn.java:131) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.onSubscribe(FluxSubscribeOn.java:124) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:178) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxGenerate.subscribe(FluxGenerate.java:85) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.InternalFluxOperator.subscribe(InternalFluxOperator.java:68) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.run(FluxSubscribeOn.java:194) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.scheduler.BoundedElasticThreadPerTaskScheduler$SchedulerTask.run(BoundedElasticThreadPerTaskScheduler.java:1013) ~[reactor-core-3.7.3.jar:3.7.3]
	at java.base/java.lang.VirtualThread.run(Unknown Source) ~[na:na]
Caused by: reactor.core.Exceptions$ReactiveException: java.lang.InterruptedException
	at reactor.core.Exceptions$ReactiveException.fillInStackTrace(Exceptions.java:736) ~[reactor-core-3.7.3.jar:3.7.3]
	at java.base/java.lang.Throwable.<init>(Unknown Source) ~[na:na]
	at java.base/java.lang.Throwable.<init>(Unknown Source) ~[na:na]
	at java.base/java.lang.Exception.<init>(Unknown Source) ~[na:na]
	at java.base/java.lang.RuntimeException.<init>(Unknown Source) ~[na:na]
	at reactor.core.Exceptions$ReactiveException.<init>(Exceptions.java:726) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.Exceptions.propagate(Exceptions.java:410) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.BlockingOptionalMonoSubscriber.blockingGet(BlockingOptionalMonoSubscriber.java:158) ~[reactor-core-3.7.3.jar:3.7.3]
	at reactor.core.publisher.Mono.blockOptional(Mono.java:1861) ~[reactor-core-3.7.3.jar:3.7.3]
	at run.halo.app.infra.utils.ReactiveUtils.blockReactiveValue(ReactiveUtils.java:45) ~[classes/:na]
	at run.halo.app.infra.utils.ReactiveUtils.blockReactiveValue(ReactiveUtils.java:28) ~[classes/:na]
	at run.halo.app.theme.dialect.EvaluationContextEnhancer$ReactiveMethodExecutor.lambda$execute$1(EvaluationContextEnhancer.java:206) ~[classes/:2.20.16]
	at java.base/java.util.Optional.map(Unknown Source) ~[na:na]
	at run.halo.app.theme.dialect.EvaluationContextEnhancer$ReactiveMethodExecutor.execute(EvaluationContextEnhancer.java:206) ~[classes/:2.20.16]
	at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:152) ~[spring-expression-6.2.3.jar:6.2.3]
	at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:398) ~[spring-expression-6.2.3.jar:6.2.3]
	at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:97) ~[spring-expression-6.2.3.jar:6.2.3]
	at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:116) ~[spring-expression-6.2.3.jar:6.2.3]
	at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:338) ~[spring-expression-6.2.3.jar:6.2.3]
	at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:265) ~[thymeleaf-spring6-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	... 46 common frames omitted
	Suppressed: java.lang.Exception: #blockOptional(timeout) has been interrupted
		at reactor.core.publisher.BlockingOptionalMonoSubscriber.blockingGet(BlockingOptionalMonoSubscriber.java:160) ~[reactor-core-3.7.3.jar:3.7.3]
		... 58 common frames omitted
Caused by: java.lang.InterruptedException: null
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(Unknown Source) ~[na:na]
	at java.base/java.util.concurrent.CountDownLatch.await(Unknown Source) ~[na:na]
	at reactor.core.publisher.BlockingOptionalMonoSubscriber.blockingGet(BlockingOptionalMonoSubscriber.java:150) ~[reactor-core-3.7.3.jar:3.7.3]
	... 58 common frames omitted

2025-03-13T10:39:04.114+08:00 ERROR 2 --- [dedElastic-3351] io.netty.util.ResourceLeakDetector       : LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 
Created at:
	io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:410)
	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)
	io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:116)
	org.springframework.core.io.buffer.NettyDataBufferFactory.allocateBuffer(NettyDataBufferFactory.java:72)
	org.springframework.core.io.buffer.NettyDataBufferFactory.allocateBuffer(NettyDataBufferFactory.java:39)
	org.thymeleaf.spring6.SpringWebFluxTemplateEngine.lambda$createChunkedStream$2(SpringWebFluxTemplateEngine.java:264)
	reactor.core.publisher.FluxGenerate$GenerateSubscription.slowPath(FluxGenerate.java:271)
	reactor.core.publisher.FluxGenerate$GenerateSubscription.request(FluxGenerate.java:213)
	reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.request(FluxPeekFuseable.java:144)
	reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.requestUpstream(FluxSubscribeOn.java:131)
	reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.onSubscribe(FluxSubscribeOn.java:124)
	reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:178)
	reactor.core.publisher.FluxGenerate.subscribe(FluxGenerate.java:85)
	reactor.core.publisher.InternalFluxOperator.subscribe(InternalFluxOperator.java:68)
	reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.run(FluxSubscribeOn.java:194)
	reactor.core.scheduler.BoundedElasticThreadPerTaskScheduler$SchedulerTask.run(BoundedElasticThreadPerTaskScheduler.java:1013)
	java.base/java.lang.VirtualThread.run(Unknown Source)
```

### Additional information

/kind bug
/area core

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TemplateEngine may cause memory leak while connection interrupted #7289

Prerequisites

System information

What is the project operation method?

What happened?

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Relevant log output

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TemplateEngine may cause memory leak while connection interrupted #7289

Description

Prerequisites

System information

What is the project operation method?

What happened?

Reproduce Steps

Relevant log output

Additional information

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions