Training: June 20–21, 2016
Tutorials: June 21, 2016
Keynotes & Sessions: June 22–23, 2016
Santa Clara, CA

Real-world experience with HTTP/2

Michael Gooding (Akamai), Javier Garza (Akamai Technologies)
4:35pm–5:15pm Thursday, 06/23/2016
Performance for the people
Location: Ballroom CD Level: Intermediate
Average rating: ****.
(4.20, 5 ratings)

Prerequisite knowledge

Attendees should be familiar with HTTP/2 and have with a decent level of performance optimization knowledge.


Michael Gooding and Javier Garza share their experiences using HTTP/2 over the last 12 months, exploring case studies that demonstrate how performance can be improved while also addressing backward compatibility, using RUM data to review performance-related observations of customers after making the switch, and hands-on demos of HTTP/2 with server push and HTTP/2 + QUIC.

Topics include:

  • Rendering impact without prioritization: many solutions are currently not supporting server push or prioritization, which can have a negative impact on rendering when all resources instantly compete for the same bandwidth. Michael and Javier discuss solutions to mitigate this problem.
  • Breaking out to smaller files: best practice used to dictate combining CSS and JavaScript into as few resources as possible. In an HTTP/2 world, the advice is to leave files alone and serve them as they are. Michael and Javier look at examples where trade-offs exist between the delivery, management, compression, and caching and advise how best to approach the problem.
  • Sprites: looking at examples, Michael and Javier analyze the trade-offs in breaking a sprite out to smaller parts, looking at the effects of less complex CSS against network performance to see how much a difference it actually makes on performance.
  • Delivering for HTTP/1.x: many websites today still have large user bases from older browsers that do not and will not support HTTP/2. By reviewing case study sites optimized for HTTP/2, Michael and Javier display the delta between the site delivered over an HTTP/2 connection and an HTTP/1.x connection, explore some common trade-offs, and review the delivery options to provide good performance for both protocols at the same time.
  • Real-life HTTP/2 web performance data: using RUM data, Michael and Javier review web performance data from large websites after enabling HTTP/2 and discuss the conditions where the performance improvements are at their best.
  • Demo: Michael and Javier offer a hands-on demo comparing the web performance of HTTP/2 and HTTP/1.x 1, HTTP/2 with server push, and HTTP/2 + QUIC.
Photo of Michael Gooding

Michael Gooding


Michael Gooding is a web performance evangelist for Akamai Technologies, where he helps customers identify performance bottlenecks and solves often complex problems. With 10 years’ experience in the IT industry, Michael started professional life as a developer but moved into consultancy when performance issues started to become the norm and not the exception. Previously, he worked for the NCC Group (formerly Site Confidence), helping customers from all industries improve the performance of their sites. Michael is constantly researching latest optimizations trends and current techniques and sits on the organizing committee of the London Web Performance Group. Michael has found himself becoming more and more impatient as he gets older, which fuels his desire for a faster web experience.

Photo of Javier Garza

Javier Garza

Akamai Technologies

Javier Garza is a multi-lingual developer evangelist who loves taking things apart, understanding how things work, and finding the best and most practical ways of improving them. Javier started hacking Basic-based computer games at the age of 9. He has been working with computers for more than 25 years in Spain, Germany, and the USA (half of those at Akamai, helping the largest websites on the Internet run faster and more securely).