SRE: Self Isolated Edition

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armakuni.com Site Reliability Engineering Self Isolated Edition Billie Thompson

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2 How are you keeping it together?

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armakuni.com Site Reliability Engineering Self Isolated Edition Billie Thompson

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Introductions 4 ● Billie Thompson ● Developer ● Fav. Animal Capybara PurpleBooth ArmakuniHQ Getting to know you, Getting to know all about you

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We’ve worked with these people 6

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7 I invented a game

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9 30 Seconds Fast Careful

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10 I can go faster, but I’ll make more mistakes

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11 I can go slower, but I’ll get fewer in

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12 Middle pace is about the best

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13 30 Seconds

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14 1 Sprint

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15 SRE is an implementation of DevOps

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16 In a few months SRE will be nothing more than DevOps 2.0

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17 I want to talk about the bits that will be lost

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18 Great Powers

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19 The metric you see is the metric you move

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20 The North Star Metric is the single metric that best captures the core value that your product delivers to customers.

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21 Focus on feature delivery

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22 Focus on feature delivery I delivered 15 story points this week! My teams just don’t have the feature velocity

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23 Focus on feature delivery Focus on stability I delivered 15 story points this week! My teams just don’t have the feature velocity

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armakuni.com How do you combat the great power of feature delivery Self Isolated Edition Billie Thompson

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25 What attributes does a countering force need to have ● Fast feedback cycle ● ●

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26 What attributes does a countering force need to have ● Fast feedback cycle ● Be achievable ●

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27 What attributes does a countering force need to have ● Fast feedback cycle ● Be achievable ● Have monetary impact

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28 Focus on feature delivery Focus on stability I delivered 15 story points this week! My teams just don’t have the feature velocity and we don’t know The Error Budget

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29 Errors are Inevitable

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30 100% Uptime is Impossible

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31 100% Uptime is Impossible and undesirable

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32 Stability-o-meter Never down Always down

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Our customers would leave us if we had performance in this region 33 Stability-o-meter Never down Always down

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If we are here we are taking as much risk as our customers will tolerate 34 Stability-o-meter Never down Always down

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We need a buffer between what we aim for and what our customers need 35 Stability-o-meter Never down Always down

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This is our error budget we can spend it how we like 36 Stability-o-meter Never down Always down

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Maybe we release a risky feature 37 Stability-o-meter Never down Always down

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Maybe we do that DB migration 38 Stability-o-meter Never down Always down

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Maybe something goes really wrong and we go over 39 Stability-o-meter Never down Always down

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40 Stability-o-meter Never down Always down SLO Service Level Objective An internal team target

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41 Stability-o-meter Never down Always down SLA Service Level Agreement An external promise to customers backed up with ﬁnancial penalties

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42 Stability-o-meter Never down Always down SLA An external promise to customers backed up with ﬁnancial penalties The units of this chart are the SLI (Service Level Indicator)

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https://cre.page.link/art-of-slos-slides Request / Response Availability Latency Quality Data Processing Coverage Correctness Freshness Throughput Storage Throughput Latency SLI Menu