Best of 2020

The blog posts Hacker News loved most in 2020. 2,277 posts.

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Testing Sync at Dropbox

Executing a full rewrite of the Dropbox sync engine was pretty daunting. (Read more about our goals and how we made the decision in our previous post here .) Doing so meant taking the engine that powers Dropbox on hundreds of millions of user’s machines and swapping it out mid-flight. To pull this off, we knew we…