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

This article introduces the relevant knowledge of "how to solve common problems in database caching". In the operation process of actual cases, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

cache penetration

When we use cache, we often try to take a value in the cache first. If there is no value in the cache, we will go to the database to take a value. If there is no value in the database, we will return null or throw an exception according to business requirements.

If the user keeps accessing data that doesn't exist in the database, such as data with id-1, it will cause each request to go to the cache first and then to the database again, causing serious performance problems. This is called cache penetration.

solutions

The following solutions are available:

Verify request parameters, such as user authentication verification, id basic verification, id

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.