Practical application scenarios and case sharing of Memcache caching technology in PHP

As Web applications continue to gain the favor of users, it is important to ensure the efficiency of the application. In order to relieve the pressure on the application, many companies adopt caching technology. Among them, Memcache is the most commonly used in Web applications. One of the caching technologies.

Memcache is a memory caching technology that can cache data in memory for fast access, which can improve the performance of web applications and reduce database access. Below, we will discuss the actual application scenarios and case sharing of Memcache.

1. Home page cache

The main page of a Web application is usually the page that all users will visit, and the main page usually does not have much dynamic content, static content and public More content. Therefore, according to the homepage caching technology, we can cache early requested pages and store static data in memory, thereby achieving the purpose of reducing homepage visits and improving performance.

2. Session Cache

Web application sessions often need to store a large amount of user data. This problem can cause the server to be overloaded because the server has to request data for each user. When using Memcache caching technology, we can store session information in memory, so the server can quickly read cached session data every time.

3. Database Cache

When a web application accesses a database, the query is typically read only once. Thereafter, the same query may be executed multiple times in the same server session. This will cause the server to be overloaded. However, when using Memcache caching technology, we can cache the results in the database and store the query results in memory as key-value pairs. Therefore, allowing an application to read query results multiple times in the same server session will improve application performance.

4. API Cache

Web applications often need to access external APIs. Caching API answers will make API queries faster. When using Memcache caching technology, answers can be cached and stored in Memcache, thereby increasing access speed.

Now, let’s look at a practical case of using Memcache to implement caching technology:

Suppose we have an e-commerce website with high load and balance functions, and customers often check their balances , when the balance query enters the database, each query answer increases the load on the server.

Using Memcache, a caching technology, balances can be easily cached. And when the balance changes, we only need to reset the cache instead of reading from the database every time. In this way, we can respond to client query requests faster and improve the performance of web applications.

In summary, with the development of web applications, caching technology is becoming more and more important. Memcache caching technology is one of the most commonly used caching technologies in web applications. In actual application scenarios, homepage caching, session caching, database caching and API caching are all common applications of Memcache caching technology. By using Memcache caching technology, we can avoid server pressure and improve the performance of web applications.

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