November 2018
Intermediate to advanced
346 pages
8h 12m
English
Content preview from Hands-On Dependency Injection in Go
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Review of the dependency graph
Throughout this book, we have used the dependency graph as a way to discover potential issues. Here is how it looked when we started:
For a small service with only three endpoints, it's kind of complicated. From this graph, we also noticed that there were a lot of arrows pointing to the data, config, and logging packages.
Working under the assumption that more arrows going into or coming out of a package meant the more risk, complexity, and coupling, we set about trying to reduce these relationships.
The highest impact change was our adoption of the config injection, which included the definition of local
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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.