Shulou(Shulou.com)06/02 Report--

Where is the cache setting for the new cloud server? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

At present, there are three typical cache modes: Cache Aside, Read/Write Through and Write Behind. Let's introduce two of them.

Read/Write Through mode

In fact, this pattern takes the cache service as the main storage, and all read and write requests of the application deal directly with the cache service, regardless of the last database, the data of the database is maintained and updated by the cache service. However, when the data in the cache changes, the database is updated synchronously, and there is only the cache service in the eyes of the application.

Process: both the application data to be read and the updated data directly access the cache service, and the cache service updates the data to the database synchronously.

The probability of dirty data in this mode is relatively low, but it strongly depends on the cache, which requires the stability of the cache service. In addition, there will be the problem of empty data in the initial state when adding new cache nodes.

Write Behind mode

This pattern is a variation of the Read/Write Through pattern. The difference is that the Read/Write Through mode cache is synchronous when writing to the database, while the Write Behind mode cache operation database is asynchronous.

Process: the data to be read and updated by the application directly access the cache service, and the cache service updates the data to the server database asynchronously (through asynchronous tasks).

The characteristic of this model is that the speed is very fast, the efficiency will be very high, but the consistency of the data is relatively poor, there may be data loss, and the implementation logic is more complex.

This is the answer to the question about where the cache of the new cloud server is set. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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