November 2020
Beginner to intermediate
250 pages
7h 41m
English
Content preview from 97 Things Every SRE Should Know
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Chapter 30. Methodological Debugging
Avishai Ish-Shalom and Nati Cohen
SREs often debug in production—under stress and flooded with information. Debugging can seem like a mysterious, innate trait, but luckily this is untrue; rather, you can follow a structured methodological process to pinpoint the problem, avoiding mistakes and cognitive biases.
Triage: In dealing with an incident, we first must make some meta-decisions quickly: What’s the business impact? Are we handling this incident now or can it be deferred? Do we have time to debug it or should we employ an emergency failover procedure? Many of the answers are unknown before you begin debugging. Triage is a short phase to answer these questions quickly, before launching into a possibly long debugging process. However, you can go back to it at any point: think of triage as a fail-fast step to return to any time you have more data.
Operational definition: To solve an issue we decide is worth pursuing, we need to define it precisely and measurably (“it’s slow” doesn’t cut it). An operational definition has two main parts: a method of measurement (i.e., From where? With which tools? When? In which environment?) and an expected result of that measurement (e.g., “p99 of transaction X is consistently over ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.