September 2022
Intermediate to advanced
560 pages
17h 55m
English
book
Establishing SRE Foundations: A Step-by-Step Guide to Introducing Site Reliability Engineering in Software Delivery Organizations
by Vladyslav Ukis
Content preview from Establishing SRE Foundations: A Step-by-Step Guide to Introducing Site Reliability Engineering in Software Delivery Organizations
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Chapter 3
SRE Basic Concepts
The basic concepts of SRE are not numerous and not difficult to explain, which makes this a good starting point for our SRE transformation journey. The concepts are service level indicators, service level objectives, error budgets, and error budget policies. We touched upon them briefly in Chapter 1 and Chapter 2. In this chapter, we will explore them in more detail.
3.1 Service Level Indicators
Service level indicators (SLIs) are a foundational concept in SRE. All the other concepts build on top of SLIs. In the book Site Reliability Engineering: How Google Runs Production Systems,1 an SLI is succinctly defined as “a service level indicator—a carefully defined quantitative measure of some aspect of the level of ...
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