Undertow configuration: caching of JS, CSS, and images

[juergen.zimmermann]

Is there a config option in Undertow to cache files like JavaScript scripts, CSS files, and images (PNG or JPEG)? Any hint is appreciated.

[ctomc]

I would go with adding cache filter that would than be enabled by predicate that matches css, js & other relevant resources.

Only problem is that currently you cannot do this easily with configuring subsystem as cache handler needs to get DirectCache passed in as constructor parameter.

Only thing I can think of now is that you add ServletExtension http://undertow.io/documentation/servlet/servlet-extensions.html

and create cache handler something along the lines:

final CacheHandler cacheHandler = new CacheHandler(new DirectBufferCache(100, 10, 1000));

where you should adjust the sizes of the cache according to your needs.

than add that cache handler to outerDeploymentChain

[ctomc]

Forgot to add the "when file is css, js & like" part.

HttpHandler handler = Handlers.predicate(Predicates.suffixes("css","js","jpg"),cacheHandler,next);

this will make sure cache handler only gets called for suffixes defined in predicate.

[ctomc]

created [WFLY-4265] Add support for caching handler - JBoss Issue Tracker