Zend Framework 2 : Cache Module Config and Module Classmap

We already know, that all module configs and class maps over modules are merged. But merging in every request is not a good idea because it will pay the time. If our application is run on production environment, our ZF2 application should use cache to cache config and the classmap too (Whether or not you create a class map for your modules classes, class map cache will be created automatically.). So, it can reduce time access, and of course, reduce memory to process it in the next time refresh.
I will show you how to use it.
1. Create a cache directory like the following

2. Make the cache directory writable

sudo chmod -R 777 /path/to/zf21_learn/data/cache/modulecache

3. Configure config/application.config.php

return array(
    'modules' => array(
        'Application',
        'ZFTool',
        'Album'
        'ZendDeveloperTools'
    ),
    'module_listener_options' => array(
        'module_paths' => array(
            './module',
            './vendor'
            ),
        'config_glob_paths' => array('config/autoload/{,*.}{global,local}.php'),
        
        // Whether or not to enable a configuration cache.
        // If enabled, the merged configuration will be cached and used in
        // subsequent requests.
        'config_cache_enabled' => true,
        // The key used to create the configuration cache file name.
        'config_cache_key' => "2245023265ae4cf87d02c8b6ba991139",

        // Whether or not to enable a module class map cache.
        // If enabled, creates a module class map cache which will be used
        // by in future requests, to reduce the autoloading process.
        'module_map_cache_enabled' => true,
        // The key used to create the class map cache file name.
        'module_map_cache_key' => "496fe9daf9baed5ab03314f04518b928",
        
        
        // The path in which to cache merged configuration.
        'cache_dir' => "./data/cache/modulecache",
    )
);

4. Test run your ZF2 App

Once you’ve run, your cache files will be created like the following :

References :
1. https://github.com/zendframework/ZendSkeletonApplication/blob/master/config/application.config.php

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