WEBVTT

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So in this section of the course, we'll be looking at micro services and will actually be building

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a single micro service that does just one thing.

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And of course, that begs the question, what is a micro service?

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Well, in simplest terms, it's a very small application that does one thing and does it well and it

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doesn't care at all about the structure or architecture of the rest of the application.

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So when you think about it really simply, it's very similar to the Unix approach where people who develop

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software for Unix based systems typically build one thing that does one thing only and does it very,

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very well.

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And that's exactly what my core services are.

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They're basically a variation on an approach known as the service oriented architecture.

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So I'm looking right now at a really helpful page produced by IBM and there's actually an e-book you

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can download here and there's a video you can watch, and it goes through the rationale for using micro

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services.

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And one of the things that does point out is that typically micro services are deployed as part of a

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particular kind of dev ops infrastructure, usually Carbonetti or something like that, a container

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management system where your particular service is deployed to one or more containers.

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Now, we're obviously not going to build a Cubanos cluster in this course because that's far beyond

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the scope of the kinds of things that we want to do.

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But what we will do is build a single micro surface, one that generates an invoice every time a sale

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takes place, it generates an invoice as a PDF and sends it off.

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So let's get started.