A faster website with PHP cache, Redis and Memcached...There are different kinds of cache types and all of them have different functions. Our list includes only server side cache types which are used together with PHP scripts. Other cache types like browser cache, database cache or proxy cache are not the scope of this article...
As site speed it something to consider from a user and SEO point of view it would benefit the site overall. However I find implementing any caching to improve site speed during site development or site updates a PIA. You can't see what you changed without turning caching off and then back on. Any easier way to handle this?