Configuring Caching

System Configuration

PageSpeed requires publicly cacheable resources to provide maximum benefit. As discussed in the "Cache Extender" filter, the origin TTL specified in the server configuration file dictates how quickly changes made to the source can propagate to users' browser caches. However, using PageSpeed, resources referenced statically from HTML files will be served with a one-year cache lifetime, but with a URL that is versioned using a content hash.