Let\'s say you have this scenario:a simple blog home-page that loads both static content as well as dynamic content. The static content is composed of images that rarely cha
A simple cache is one that times out after the defined period of time. This keeps the caching layer simple and easy to implement. The Zend Manual has more information on caching basics.
However real-time information and cached information are two worlds. If you need real-time, don't cache.
If you make the caching layer too complex, you can destroy your whole application.