Monitoring memory usage of APC (http://pecl.php.net/package/APC) module. File apc-stats.php need to be accessed via HTTP for example http://127.0.0.1/apc-stats.php
Template App OPcache
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Monitoring memory usage of OPcache (http://php.net/manual/en/book.opcache.php). File opcache.php need to be accessed via HTTP for example http://127.0.0.1/opcache.php. Curl need to be installed on server.
Template App RabbitMQ
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Monitoring RabbitMQ (http://www.rabbitmq.com/) basic parameters like queues, exchanges and memory usage. You need install PHP on server for monitoring RabbitMQ.