How the twig caching exactly work? [closed]

Question

I have recently start work with twig in my project, I have check that twig have create cache folder, and check that twig basically create some php classes for cache,

I want to understand exactly how this mechanism is work, how it beneficial to reduce the page loading time, any one can help me ?

Answer 1

Twig evaluation process looks like:

1. Your templates are parsed, abstract syntax tree (AST) is built from then and then AST is transformed into php code
2. Php code from the step #1 is evaluated

With Twig templates caching you eliminate step #1, since the transformation results are written to a cache files.

So it is highly recommended to use it on production. Just make sure you clear the template directory cache on deploy or specify another directory as a target. It could be a good idea to include the application version number in the path.