Why Uber Engineering Switched from Postgres to MySQL
We’ve represented the old version in red and the new row version in green. Under the hood, Postgres uses another field holding the row version to determine which tuple is most recent. This added field lets the database determine which row tuple to serve to a transaction that may not be allowed to see the latest row version. With Postgres, the primary index and secondary indexes all point directly
Uber Engineering's Tech Stack: The Edge and Beyond
Uber’s mission is transportation as reliable as running water, everywhere, for everyone. Last time, we talked about the foundation that powers Uber Engineering. Now, we’ll explore the parts of the stack that face riders and drivers, starting with the world of Marketplace and moving up the stack through web and mobile. Middle: Marketplace Marketplace, the frontmost end of the Uber engine, funnels t
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