August 2017
Intermediate to advanced
332 pages
9h 16m
English
Content preview from Continuous Delivery with Docker and Jenkins
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Non-backwards-compatible changes
Non-backwards-compatible changes are way more difficult. Looking at the previous figure, if database change v11 was backwards-incompatible, it would be impossible to roll back the service to 1.2.7. In this case, how can we approach non-backwards-compatible database migrations so that rollbacks and zero-downtime deployments would be possible?
To make a long story short, we can address this issue by converting a non-backwards-compatible change into a change that is backwards-compatible for a certain period of time. In other words, we need to put in the extra effort and split the schema migration into two parts:
- Backwards-compatible update executed now, which usually means keeping some redundant data
- Non-backwards-compatible ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.