On the surface, the tech behind a payments API may look like any other startup’s. You'll probably find some Rails apps, a database, and a bunch of stuff off to the sides to glue it together. GoCardless found it's mostly not the tech that differs, but the approach.
Using their high-availability Postgres cluster as a running example, they explore how reliability became so important to them, and dive into the most recent feature they built into the cluster: zero-downtime patch upgrades.
On this page of the site you can watch the video online Zero-downtime Postgres Upgrades with a duration of hours minute second in good quality, which was uploaded by the user Outlyer 01 February 2017, share the link with friends and acquaintances, this video has already been watched 5,559 times on youtube and it was liked by 108 viewers. Enjoy your viewing!