November 2019
Intermediate to advanced
408 pages
9h 56m
English
Content preview from Hands-On Docker for Microservices with Python
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Deploying one change at a time
To ensure that the features can be deployed smoothly, one at a time, they need to keep backward compatibility. This means that you need to be able to live in an intermediate stage when service A has been deployed, but not service B. Each change in the microservices needs to be as small as possible to minimize risks, and they should be introduced one change at a time.
Why don't we deploy them all simultaneously? Because releasing two microservices at the same time is dangerous. To start with, deployments are not instantaneous, so there will be moments where out-of-date services will either send or receive calls that the system is not prepared to handle. That will create errors that may affect your customers. ...
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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.