You’re seeing information for Japan . To see local features and services for another location, select a different city. Show more With UberEATS, our aim is to make ordering food from your favorite restaurants as seamless as requesting a ride with uberX or uberPOOL. Like launching any new product, building out a food delivery network came with its fair share of engineering triumphs and surprises. A
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
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