How Facebook Sees How Thousands of Devices React to Code Changes
Why is there a wall featuring thousands of mobile devices, older and newer, in Facebook’s data center in Prineville, Ore.? It’s not there for decoration.
Why is there a wall featuring thousands of mobile devices, older and newer, in Facebook’s data center in Prineville, Ore.? It’s not there for decoration.
Facebook production engineer Antoine Reversat described how Facebook examines the impact of code changes on thousands of devices in a blog post.
Reversat wrote:
Initially, engineers tested code by running CT-Scan on a single device that they had at their desks. This didn’t scale—we needed to be able to run tests on more than 2,000 mobile devices to account for all the combinations of device hardware, operating systems and network connections that people use to connect on Facebook.
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