What is cached by an opcode cache?
OPcache is a type of caching system that saves precompiled script bytecode in a server’s memory called a cache, so each time a user visits a web page, it loads faster. Here’s more detail on OPcache and how to install it for your WordPress site to speed it up.
How do I flush PHP Cache?
To flush PHP Opcache on the PHP-FPM method, you have to send a reload to your PHP-FPM daemon. The reload will clear the Opcache, and when the next request arrives, it will force it to rebuild the cache. You can flush the entire cache of all the websites by reloading the single master.
How do I disable Opcache?
You need to set it outside PHP:
- If PHP runs as Apache module, use an .htaccess file: php_flag opcache.enable Off.
- If PHP runs as CGI/FastCGI, use a .user.ini file: opcache.enable=0.
Why do we use cache in PHP?
A cache is a collection of duplicate data, where the original data is expensive to fetch or compute (usually in terms of access time) relative to the cache. In PHP, caching is used to minimize page generation time.
What is an opcode used for?
In computing, an opcode (abbreviated from operation code, also known as instruction machine code, instruction code, instruction syllable, instruction parcel or opstring) is the portion of a machine language instruction that specifies the operation to be performed.
How do I enable APC?
Follow these steps to install APC.
- Download the correct version. Download the windows binary for the PHP version you have installed from http://downloads.php.net/pierre/.
- Enable the APC extension in your PHP. INI file.
- Check the memory available.
- Customizing APC settings for Moodle.
- Set the temp directory.
- APC.
What is PHP cache?
What are opcode caches and how do they work?
What are OpCode Caches? OpCode Caches are a performance enhancing extension for PHP. They do this by injecting themselves into the execution life-cycle of PHP and caching the results of the compilation phase for later reuse. It is not uncommon to see a 3x performance increase just by enabling an OpCode cache.
How do I enable opcode caching in cPanel?
To enable opcode caching for your account, follow these steps: Log in to cPanel. In the SOFTWARE section of the cPanel home screen, click Select PHP Version. Select the check box next to the opcode caching extension you want to enable: If you are using PHP version 5.4 or older, select apc. Click Save.
Do all accounts have opcode caching enabled by default?
Although many server accounts already have opcode caching enabled by default, some accounts (for example, Turbo Reseller servers) do not. The Alternative PHP Cache (APC) and OPcache provide opcode caching.
Should you use opcode cache in Zend?
Additionally, when using Zend OpCache, a lot of optimizations are done for you (e.g. switching $i++ to ++$i when the return value isn’t used). Using an opcode cache should not be optional anymore, it will enable you to get more performance from your hardware with very little effort.