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Real-World SRE

Real-World SRE

By : Nat Welch
4.5 (10)
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Real-World SRE

Real-World SRE

4.5 (10)
By: Nat Welch

Overview of this book

Real-World SRE is the go-to survival guide for the software developer in the middle of catastrophic website failure. Site Reliability Engineering (SRE) has emerged on the frontline as businesses strive to maximize uptime. This book is a step-by-step framework to follow when your website is down and the countdown is on to fix it. Nat Welch has battle-hardened experience in reliability engineering at some of the biggest outage-sensitive companies on the internet. Arm yourself with his tried-and-tested methods for monitoring modern web services, setting up alerts, and evaluating your incident response. Real-World SRE goes beyond just reacting to disaster—uncover the tools and strategies needed to safely test and release software, plan for long-term growth, and foresee future bottlenecks. Real-World SRE gives you the capability to set up your own robust plan of action to see you through a company-wide website crisis. The final chapter of Real-World SRE is dedicated to acing SRE interviews, either in getting a first job or a valued promotion.
Table of Contents (13 chapters)
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12
Index

Recovering the system


One thing that we have yet to touch on is how to debug your application and do the technical work of responding to an incident. This is the third pillar of the initial three pillars we mentioned when defining incident response. We were alerted that things were not great. We communicated that we were on the case. Now we need to make things better.

How do we do that? We will be talking about measuring mean time to recovery (MTTR) in Chapter 4, Postmortems, but the strategy that we kept mentioning earlier in this chapter was bringing the system back to a working state. That's because you don't necessarily want to immediately go into bug-hunting mode. Instead, you want to find what has changed in the system and revert back. Let us walk through the common first steps in trying to track down a broken system.

Step zero is to take a deep breath. Force yourself to slow down a little. I prefer to count to six while inhaling, count to six again while holding my breath, count to...

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