This course teaches the theory of Service Level Objectives (SLOs), a principled way of describing and measuring the desired reliability of a service. Upon completion, learners should be able to apply these principles to develop the first SLOs for services they are familiar with in their own organizations. Learners will also learn how to use Service Level Indicators (SLIs) to quantify reliability and Error Budgets to drive business decisions around engineering for greater reliability. The learner will understand the components of a meaningful SLI and walk through the process of developing SLIs and SLOs for an example service.
Site Reliability Engineering: Measuring and Managing Reliability
Offered By
Site Reliability Engineering: Measuring and Managing Reliability
Google Cloud
About this Course
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What you will learn
How to make systems reliable
Understanding SLIs, SLOs and SLAs
Quantifying risks to and consequences of SLOs
Syllabus - What you will learn from this course
Week
127 minutes to complete
Introduction to SRE
This module is intended to bring you up to speed on the concepts underpinning SRE, CRE, and SLOs. If you're already familiar with these concepts, you may still find new information and perspectives in this module, but it is not necessary to complete it.
9 videos (Total 15 min), 1 quiz
9 videos
Introduction15s
Intro10s
CRE's Three Reliability Principles3m
Reliability in the Cloud3m
How SLOs help your business make decisions1m
How SLOs help you build features faster1m
How SLOs help you balance operational and project work1m
Making SLOs work for your organization59s
1 practice exercise
DevOps/SRE1m
1 hour to complete
Targeting Reliability
In this module we’re going to talk about how you measure the desired reliability of a service. We will address what to consider when setting SLOs for your application within your organization. We'll look at the three principles we use to measure the desired reliability of a service: figuring out what you want to promise and to whom, figuring out the metrics you care about that make your service reliability “good", and finally, deciding how much reliability is good enough.
7 videos (Total 14 min), 4 quizzes
7 videos
Introduction51s
SLOs vs SLAs2m
The happiness test2m
How do we measure reliability?3m
Edge cases2m
100% is the wrong target1m
Iterating1m
4 practice exercises
A working service5m
SLOs and SLAs7m
Reliability and iterating1m
Targeting Reliability Assessment7m
1 hour to complete
Operating for Reliability
In this module, we’ll start by introducing a mechanism for quantifying unreliability using something called an error budget. We'll show how error budgets help you decide when to focus on making a service more reliable. And then we'll learn about some of the engineering and operational improvements that can help you do that.
7 videos (Total 19 min), 3 quizzes
7 videos
Introduction47s
Error budgets3m
Everything is a trade-off3m
Error budgets: advanced concepts2m
Axes of improvement4m
Operational approach to increasing reliability2m
Module summary50s
3 practice exercises
Error budgets5m
Increasing reliability3m
Operating for Reliability Assessment5m
Week
21 hour to complete
Choosing a Good SLI
In this module we will start off by taking a look at some characteristics of monitoring metrics that can make them useful as SLIs and contrast these against other metrics that are less useful. Because the choice of where to measure an SLI is a key variable, we'll cover the five main ways you can measure an SLI and compare their pros and cons.
14 videos (Total 41 min), 3 quizzes
14 videos
User happiness in metric form1m
The properties of good SLI metrics4m
Ways of measuring SLIs4m
The SLI menu2m
The SLI equation1m
Request / Response SLIs5m
Data processing SLIs6m
"But my system is really complex!"2m
Managing complexity with aggregation2m
Managing complexity with bucketing3m
Achieveable SLOs1m
Aspirational SLOs1m
Continuous improvement1m
3 practice exercises
Measuring happiness1m
Commonly used SLIs2m
Correctness and Coverage2m
Week
35 hours to complete
Developing SLOs and SLIs
In this module, we'll start off with an overview of our four step process for developing SLOs and SLIs for a user journey. We'll introduce the fictional company that created our example mobile game, the infrastructure that we'll be working with, and the simple user journey we'll be applying the four step process to.
7 videos (Total 18 min), 4 quizzes
7 videos
Introduction51s
The 4 step process1m
Our example game1m
Loading the profile page1m
Refining SLI specifications4m
Looking for observability gaps2m
Failure modes4m
2 practice exercises
Postmortem!15m
Setting Achievable SLO targets15m
Week
44 hours to complete
Quantifying Risks to SLOs
In this module we'll be taking a critical look at the availability risks for our example service. We want to answer the question: "are our SLO targets and error budgets realistic?"
4 videos (Total 20 min), 2 quizzes
4 videos
Is your error budget realistic?3m
Modeling risks in our spreadsheet5m
Analyzing risk9m
1 hour to complete
Consequences of SLO Misses
In this module, we'll cover best practices for documenting your SLOs, the rationale behind a formal error budget policy and how best to create one and finally, we'll look at an example error budget policy in order to understand the trade-offs and incentives that play out during negotiations when trying to write an error budget policy.
9 videos (Total 21 min), 3 quizzes
9 videos
Introduction37s
No surprises2m
A dashboard example1m
Why an error budget policy?2m
Fundamentals of an error budget policy3m
How to draft an error budget policy3m
Example policy thresholds3m
A hypothetical policy scenario3m
Course conclusion and video wrap up47s
3 practice exercises
Error budget policies1m
Error budget policy -- considerations2m
Consequences of SLO Misses1m
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67 ReviewsTop reviews from Site Reliability Engineering: Measuring and Managing Reliability
Very useful course to introduce SRE concepts. In combination with the SRE book, it's the way to go to learn and start applying SRE in your project/company.
SRE: Measuring and Managing Reliability is a great opportunity to learn and practice SLI, SLO, error budget policy and focus in the user happiness.
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