Did you know that, at GitHub, we host all of our own source code on github.com? We do this because weâre our own biggest customerâtesting out changes internally before they go to users. However, thereâs one downside: If github.com were ever to go down, we wouldnât be able to access our own source code. This is what youâd call a very simple circular dependency: to deploy GitHub, we needed GitHub. I


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