[GitHub] [incubator-dubbo] ericWenjp opened issue #3689: dubbo接口缓存的问题

["ericWenjp (GitHub)" <gi...@apache.org>]

- [ ] I have searched the [issues](https://github.com/apache/incubator-dubbo/issues) of this repository and believe that this is not a duplicate.
- [ ] I have checked the [FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.4.9-sp5-20150715
* Operating System version: linux
* Java version: 1.5

### Steps to reproduce this issue

1. 在dubbo:refrence 中配置了cache=“LRU”,发现数据无法获取最新数据，有时候取到新的，有时候取到旧的，后来将cache配置删了，发现还是无法解决；
2. 通过调试，用命令trace dubbo接口，发现接口返回的数据中每次都是最新的，但是在程序中debug获取的返回值却是旧的，搞不懂了，为什么会与trace返回的数据不一样呢？


Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

正常理解是cache去除后，应该是不走缓存？还是说配置问题？

### Actual Result

What actually happens?

If there is an exception, please attach the exception trace:

```
![image](https://user-images.githubusercontent.com/25905832/54585896-59751900-4a56-11e9-8878-8457ae76cb69.png)
![image](https://user-images.githubusercontent.com/25905832/54585950-7dd0f580-4a56-11e9-87e3-dfee68a43861.png)

```


[ Full content available at: https://github.com/apache/incubator-dubbo/issues/3689 ]
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[GitHub] [incubator-dubbo] cvictory commented on issue #3689: dubbo接口缓存的问题

["cvictory (GitHub)" <gi...@apache.org>]

After run sample, I found it work well. 

You can refer: https://github.com/apache/incubator-dubbo-samples/tree/master/dubbo-samples-cache . In this sample, you can modify loop times to more than 1000.  Then it will show the situation of cache invalid.

Also you can debug : org.apache.dubbo.cache.support.lru.LruCache .

After these operations, the issue is still exist.  You can upload a demo to us.

[ Full content available at: https://github.com/apache/incubator-dubbo/issues/3689 ]
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[GitHub] [incubator-dubbo] cvictory commented on issue #3689: dubbo接口缓存的问题

["cvictory (GitHub)" <gi...@apache.org>]

I will try to reproduce this issue. 

[ Full content available at: https://github.com/apache/incubator-dubbo/issues/3689 ]
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