How to improve application performance with ThinkPHP cache settings

1. Advantages of Caching

Caching technology refers to storing the results in the computer in the cache so that the results can be quickly accessed when needed in the future. In web applications, caching has the following advantages:

1. Improve the response speed and efficiency of the application

2. Reduce the load on the server and database

3. Improve user access speed and experience

When using ThinkPHP to develop applications, the use of caching technology is very necessary and important.

2. Classification of ThinkPHP cache

In the ThinkPHP framework, cache is divided into three categories: file cache, Memcache cache and Redis cache.

1. File caching

File caching is to save cached data in a file. It can quickly save a PHP array on the hard disk, with It does not require the installation of more software and is easy to use. However, because PHP's own caching functions are not rich enough and cannot automatically update the cache, it is not commonly used in large websites.

2. Memcache cache

Memcache is a high-performance, distributed memory object caching system that can be used to cache the database query results of applications. API call results, etc. Using TCP connection communication, Memcache's distributed cache structure can enhance data access speed and cache capacity.

3. Redis Cache

Redis is a high-performance NoSQL key-value pair storage database that supports multiple data types (strings, lists , sets, hashes, ordered sets, etc.), which can be used to quickly query and store data. By using the Lua scripting language, the cache can be flexibly manipulated and the scalability and reliability of Redis are significantly enhanced.

3. Use of ThinkPHP cache settings

Using the Cache class of the ThinkPHP framework can easily set up the cache, making the code simpler and more flexible. The global Cache class can be accessed anywhere in the controller, template, or model.

1. Enable caching

In ThinkPHP, you can use the configuration file to enable caching. You can set the following properties in the thinkphp/Conf/config.php file:

'HTML_CACHE_ON' => true, // Turn on static caching

'HTML_CACHE_TIME' => 60 , // Cache time

'HTML_FILE_SUFFIX' => '.html', // Cache file suffix

After static caching is enabled, all dynamic pages will be cached and static HTML files will be generated , thereby significantly improving application responsiveness and efficiency.

2. Using Cache

When accessing the cache, it is easy to use the "set()" and "get()" methods in the Cache class. The following is a simple example:

// Set cache
Cache::set('key', 'value', 3600);

// Get cache
$ value = Cache::get('key');

Here, we use the "set()" method to save "key" and "value" in the cache, and set the cache time to 3600 seconds (1 hour). Use the "get()" method to obtain the value corresponding to "key" from the cache.

3. Clear cache

While the application is running, it is sometimes necessary to clear the cache. To clear the cache, ThinkPHP provides the methods "clear()" and "rm()". There are two ways to clear the cache:

(1) Clear all caches:

Cache::clear();

(2) Clear the specified cache:

Cache::rm('key');

It should be noted that when clearing the specified cache, the cached "key" is used.

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