How to solve instant high concurrency in Java Web

1. Any high concurrency request will always have an order

2. The data structure of Java queue is the value order of first in first out

3. BlockingQueue class (thread safety) (the use method can be Baidu)

Linkedblockingqueue is generally used

Using the above points, we can put the requests in high concurrency into a queue. The size of the queue can be defined by ourselves. For example, if the queue capacity is 1000 data, we can use filters or interceptors to put the current requests into the queue. If the queue capacity is full, other requests can be discarded or replied accordingly

Specific implementation:

Using producer and consumer models:

Process the requests in the queue one by one.

Upper Code:

Well, at this time, you can use a filter or interceptor to encapsulate each request into a queue element for processing.

Of course, for the deployment architecture of multiple application servers, the database also needs to be locked. The database isolation level will be discussed in the next chapter.

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