April 2020
Intermediate to advanced
292 pages
6h 50m
English
Content preview from Practical MicroservicesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Defining Services
The defining characteristic of microservices is autonomy. Nice word, but what does it mean in this context?
First of all, let’s get back to calling them Components. Good. Now, Components don’t respond to questions. We have things we ask questions of in software. They’re called “databases,” and the process of asking them something is called “querying.” Even if you stick a database behind HTTP, it’s still a database, architecturally speaking.
Components don’t ask questions of anything else. If they did, they would depend on that thing and would no longer be autonomous. If you have to connect to something else to get data to make a decision, then you are not autonomous.
You might be saying, “That’s all well and good, but that ...
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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.