January 2026
Intermediate to advanced
674 pages
15h 30m
English
Content preview from Rust Web Programming - Third Edition
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13
Observability Through Logging
We now have a working to-do application that can either run as a single binary or run as multiple servers. However, we do not actually know what is going on inside our system. Let us say that our system makes a request from one server to another. How do we know that this request was made and what the response was? We don’t. We can try and work out what happened from the error message returned to the frontend, but this might not be clear. We also might not want to expose intricate details of the error to the frontend. To remedy this, we can produce logs of these requests and how the request travels through the system. This also gives us the power to inspect the steps that lead up to the error. Logging also enables ...
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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.