Proxy method（cglib.proxy.MethodInterceptor:intercept()） takes too long to execute.

[c00451707]

See the picture below for details.

[c00451707]

The proxy method is dynamically generated by Spring, so it is strange that the execution is slow.

[bclozel]

Could you provide a sample, minimal application that reproduces this problem?
Screenshots aren't enough for us to understand what's going on.

[c00451707]

Could you provide a sample, minimal application that reproduces this problem? Screenshots aren't enough for us to understand what's going on.

After a preliminary analysis, it is a problem caused by Spring transactions. 7 concurrent requests call the interface of this service, causing the database access of the system to be stuck.

[c00451707]

Call a method with transactions concurrently, which uses feign to call an interface of this service, which also has transactions.
The problem phenomenon is: the set concurrency degree is clearly 20, but the actual concurrency degree becomes 7. And the methods are blocked where the feign interface is called.
If I remove the transaction of the method, the actual concurrency can be changed to 20, and the feign call will not block.

[c00451707]

[c00451707]

I suspect that it is affected by the related configuration of the database transaction, causing Spring to block when executing the Aop aspect of the transaction.