Changhao Jiang

Changhao Jiang
Research Scientist, Facebook Inc.


Changhao Jiang is a research scientist at Facebook Inc. His responsibilities at Facebook are mainly focused on improving user perceived latency and front end performance monitoring. He was responsible for several major performance optimization projects at Facebook such as Quickling which transparently ajaxifies the whole website and PageCache which caches users’ visited pages using JavaScript. Changhao is also one of the lead developers of the XHProf project, which was open-sourced by Facebook. In 2009, Changhao designed and implemented the BigPipe system to serve dynamic web pages using pipelining techniques, which helped making Facebook site twice as fast. Changhao holds bachelor and master degree in Computer Science from Tsinghua University, and Ph.D. from the University of Illinois at Urbana Champaign.


Velocity Culture Ballroom CD
Jason Sobel (Facebook), Changhao Jiang (Facebook Inc.)
Average rating: ***..
(3.83, 12 ratings)
In 2009 the Facebook Engineering team set out to make the site twice as fast. This presentation will describe the technical innovations we made achieving that goal. It will specifically highlight two technologies: BigPipe, which pipelines the process for generating a webpage, and Primer, a simple JavaScript API that enables progressive enhancement. Read more.

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