The numerous roundtrips involved in downloading a page hit performance hard, but the new ‘preconnect hint’ in Firefox 39 and Chrome 46 lets you tell the browser up front about what connections you will need.
Learn to use JSON Web Tokens (JWTs) in your Java apps for secure authentication, authorization and cryptography without any OAuth headaches. You’ll finish with a working sample app and a deep understanding of token-based auth.
Inlining ‘critical’ CSS (that is, CSS that’s needed right away and helps pages render faster) into the head of an HTML document can provide a real speed boost, but how can it be done effectively? Dean Hume explains.