The advantage of caching technology in PHP is to reduce server pressure by optimizing reading logic.

PHP is a server-side scripting language widely used in web development and one of the most popular open source web development languages. With the continuous development of Web applications and the increase in the number of users, server-side performance and response speed have become urgent problems that need to be solved, and caching technology has become an important part of it.

Caching technology refers to storing frequently used data in the cache according to certain algorithms and rules in the application, and directly calling the data in the cache the next time the data needs to be used, avoiding each request. All have to go to the database or file to fetch data, thus greatly improving the performance of the application. In PHP, the application of caching technology can greatly reduce the load pressure on the server side and improve the response speed and performance of the application.

1. Reduce the number of database operations

In PHP applications, database operations are usually resource-consuming operations, especially in the case of heavy traffic access. Through caching technology, frequently accessed data can be stored in the cache, avoiding the need to perform query operations in the database for each request. This can not only improve response speed, but also reduce the number of database accesses and reduce the pressure on the database.

2. Improve access speed

Caching technology allows applications to obtain data directly from memory, faster and more efficiently. By reducing unnecessary operations and network communications, it can improve Data access speed and user satisfaction. This optimization method is particularly important for applications with high access pressure, such as social media and e-commerce websites.

3. Reduce server load pressure

If each user needs to access the database or file system to obtain data, the pressure on the server side will be great, and may even cause a server crash. After using caching technology, the same data only needs to be read from the cache once to provide services to many users, thus reducing the load pressure on the server.

4. Optimize system performance

The application of caching technology can not only reduce the number of reads from the database, but also batch process multiple data, so that the data for each query is will be less, thus optimizing the performance of the system. For some relatively complex queries, the intermediate results can be cached through caching technology. There is no need to recalculate the next time you access the same query, which can reduce repeated calculations and improve query speed.

5. Improve user experience

For some operations that require frequent requests, such as popular article lists, carousel images, product recommendations, etc., using caching technology can improve the user's access speed and experience. Thereby improving user satisfaction. In applications that are sensitive to response time, optimizing the read logic through caching technology can better meet the needs of user experience.

Summary

In PHP applications, the application of caching technology can reduce unnecessary queries and operations by optimizing read logic, thereby improving access speed and system performance, and reducing server load pressure. , improve user experience and satisfaction. However, the application of caching technology needs to pay attention to avoid cache data inconsistency, expiration, and easy security issues. Developers must set caching policies appropriately according to specific scenarios and business needs in order to maximize the advantages of caching technology.

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