jovezhao / nest Goto Github PK

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License: Apache License 2.0

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nest's Issues

EntityFactory.create 应该不允许创建多个 id 相同的实体

创建或更新实体之后会写入缓存吗？是否存在一致性问题？

阅读源码后的个人理解：
工作单元提交之后，会将变更提交到缓存中，数据库、缓存双写。

在并发情况下，此处的逻辑是否有可能会产生一致性问题？

nest/nest-ddd/src/main/java/com/zhaofujun/nest/context/ContextUnitOfWork.java

Lines 108 to 114 in ab1ed3e

 public void commit() { 

 ServiceContext serviceContext = ServiceContext.getCurrent(); 

 serviceContext.getApplication().beforeCommit(serviceContext); 

 try { 

 commitEntity(); 

 commitMessage(); 

 cacheCommit();

nest/nest-ddd/src/main/java/com/zhaofujun/nest/context/ContextUnitOfWork.java

Lines 131 to 147 in ab1ed3e

 private void cacheCommit() { 

 CacheClientFactory cacheClientFactory = new CacheClientFactory(ServiceContext.getCurrent().getApplication().getBeanFinder()); 

 CacheClient cacheClient = cacheClientFactory.getCacheClient(EntityCacheUtils.getCacheCode()); 

 entityMap.forEach((p, q) -> { 

 switch (q) { 

 case create: 

 cacheClient.put(EntityCacheUtils.getCacheKey(p), p); 

 break; 

 case update: 

 cacheClient.put(EntityCacheUtils.getCacheKey(p), p); 

 break; 

 case remove: 

 cacheClient.remove(EntityCacheUtils.getCacheKey(p)); 

 } 

 }); 

 }

在多线程的里面load修改数据的情况下，stack的进栈和出栈会错乱，会导致事务无法提交

在多线程的里面load修改数据的情况下，stack的进栈和出栈会错乱，会导致事务无法提交，例如父线程的ServiceContext先进栈，子线程的ServiceContext后进栈,父线程方法执行完了之后，调用出栈方法，子线程的ServiceContext先出栈了,然后子线程去获取ServiceContext就会存在获取不到的情况了。

建议可用private static TransmittableThreadLocal<ConcurrentHashMap<String, Stack>> serviceContextThreadLocal = new TransmittableThreadLocal<>();;来替代原来用stack来存取上下文的情况，ConcurrentHashMap里面的key存放线程名，这样根据线程名来获取上下文可防止stack出现错乱的情况

LongIdentifier 的 ID 值生成逻辑写死不太优雅

目前的 LongIdentifier id 生成方法写死了固定时间与格式的雪花算法，将 Long ID 生成方法抽象以提高灵活性。

为什么 VersionConflicted 和 Null 的错误码相等？

f8e65f9#r44826584

Gradle 脚本中使用了个人环境定义的变量，导致其他环境无法直接构建项目

nest/publish.gradle

Lines 66 to 67 in 58ffd82

 username = "${NEXUS_USERNAME}" 

 password = "${NEXUS_PASSWORD}"

FAILURE: Build failed with an exception.

* Where:
Script '/home/sia/IdeaProjects/nest/publish.gradle' line: 66

* What went wrong:
A problem occurred evaluating script.
> Could not get unknown property 'NEXUS_USERNAME' for Credentials [username: null] of type org.gradle.internal.credentials.DefaultPasswordCredentials_Decorated.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 42ms

复写batchInsert等接口后，建议源码先排除list empty。

源码中new ArrayList<>(). 建议 commitEntity时， batch操作之前，先排除list empty 的情况。

jovezhao / nest Goto Github PK

nest's People

Contributors

Stargazers

Watchers

Forkers

nest's Issues

EntityFactory.create 应该不允许创建多个 id 相同的实体

创建或更新实体之后会写入缓存吗？是否存在一致性问题？

在多线程的里面load修改数据的情况下，stack的进栈和出栈会错乱，会导致事务无法提交

LongIdentifier 的 ID 值生成逻辑写死不太优雅

为什么 VersionConflicted 和 Null 的错误码相等？

Gradle 脚本中使用了个人环境定义的变量，导致其他环境无法直接构建项目

复写batchInsert等接口后，建议源码先排除list empty。

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	public void commit() {
	ServiceContext serviceContext = ServiceContext.getCurrent();
	serviceContext.getApplication().beforeCommit(serviceContext);
	try {
	commitEntity();
	commitMessage();
	cacheCommit();

	private void cacheCommit() {

	CacheClientFactory cacheClientFactory = new CacheClientFactory(ServiceContext.getCurrent().getApplication().getBeanFinder());
	CacheClient cacheClient = cacheClientFactory.getCacheClient(EntityCacheUtils.getCacheCode());
	entityMap.forEach((p, q) -> {
	switch (q) {
	case create:
	cacheClient.put(EntityCacheUtils.getCacheKey(p), p);
	break;
	case update:
	cacheClient.put(EntityCacheUtils.getCacheKey(p), p);
	break;
	case remove:
	cacheClient.remove(EntityCacheUtils.getCacheKey(p));
	}
	});
	}

	username = "${NEXUS_USERNAME}"
	password = "${NEXUS_PASSWORD}"