Build & maintain complex distributed systems
October 1–2, 2017: Training
October 2–4, 2017: Tutorials & Conference
New York, NY
Andrew Betts

Andrew Betts
Principal Developer Advocate, Fastly

Website | @triblondon

Andrew Betts is principal developer advocate at Fastly. Andrew’s area of expertise is emerging web technologies, particularly on mobile and tablet platforms. Previously, he was a PHP and JavaScript developer, web standards advocate, and founder of FT Labs, an emerging web technologies division of the Financial Times, where he and his team created the FT web app, one of the best examples of what can be achieved with HTML5.


11:35am12:15pm Tuesday, October 3, 2017
Andrew Betts (Fastly)
Average rating: *****
(5.00, 2 ratings)
Most people working with CDN caches know about the Vary header, but few properly understand what it really does. With the advent of the Key header, new patterns for varying cache content will soon emerge. Andrew Betts shares common and advanced use cases for Vary, such as language, A/B testing, compression, and service worker support, and outlines potential changes to consider when Key arrives. Read more.