Today I learned that cross-origin module scripts require CORS handling and a Access-Control-Allow-Origin response header.
Use the refresh header or meta element to refresh a page after a given time interval.
A look-back at caching strategies from the past; with recent changes in Chrome's and Safari's caching strategies, there is no caching benefit from using publicly available third-party libraries anymore.
Trigger "Save as" browser dialogs by applying a Content-Disposition header
Article on headers that can be used to provide a better user experience making the web safer, affordable and respectful.