For dynamic web pages, use PHP Cache

Using PHP Cache for dynamic web pages is an effective way to improve the performance and speed of your website. Caching stores a static version of the generated output for a particular web page so that it can be served to subsequent visitors more quickly, reducing server load and decreasing page load times.

Here are some popular PHP caching methods and tools to consider:

1. Output Buffering: Output buffering allows you to store the output of a PHP script in a buffer and then send it to the browser when the script finishes executing. This can be achieved using the ob_start() function at the beginning of your script and the ob_end_flush() function at the end.
2. OpCode Cache: An OpCode cache, such as OPcache, caches the compiled PHP bytecode, eliminating the need to recompile the same scripts repeatedly. This results in a significant reduction in server load and improved response times. OPcache is bundled with PHP versions 5.5 and above, and you can enable it in your php.ini configuration file.
3. Key-Value Stores: Key-value stores, such as Memcached or Redis, are in-memory caching systems that can store and retrieve data using simple key-value pairs. These systems can be used to cache the results of complex database queries or store frequently accessed data to reduce the load on the database.
4. Full-Page Caching: Full-page caching involves storing the entire HTML output of a web page and serving it directly to the user, bypassing the need for PHP execution and database queries. This can be achieved using tools like Varnish Cache, a reverse proxy that caches full-page content.
5. PHP Caching Libraries: There are also PHP caching libraries, such as Stash or CacheTool, that provide a simple and consistent interface for various caching systems.