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      3 <head>
      4 <!-- Sep 03, 2024 -->
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      7 <title>Site Reliability Engineering</title>
      8 <meta name="author" content="Vincent Demeester" />
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     17 <main id="content" class="content">
     18 <header>
     19 <h1 class="title">Site Reliability Engineering</h1>
     20 </header><section id="outline-container-Terminology" class="outline-2">
     21 <h2 id="Terminology">Terminology</h2>
     22 <div class="outline-text-2" id="text-Terminology">
     23 <ul class="org-ul">
     24 <li><b>SLI - Service Level Indicator</b>
     25 <ul class="org-ul">
     26 <li>A quantitative aspect of the level of service</li>
     27 <li>What you and your users care about.</li>
     28 <li>Sharing the user&rsquo;s pain.</li>
     29 </ul></li>
     30 <li><b>SLO - Service Level Objective</b>
     31 <ul class="org-ul">
     32 <li>Targets or range values on top of your SLIs</li>
     33 <li>You can define more than one SLO per SLI</li>
     34 <li>They help to set user expectations</li>
     35 </ul></li>
     36 <li><b>SLA - Service Level Agreement</b>
     37 <ul class="org-ul">
     38 <li>They imply a contract</li>
     39 <li>Financially oriented</li>
     40 </ul></li>
     41 <li><b>Error Budget</b>
     42 <ul class="org-ul">
     43 <li>For a given SLO and a time window, how much time we can be outside of the SLO.</li>
     44 <li>A 99.9% SLO service has 0.1% error budget</li>
     45 </ul></li>
     46 </ul>
     47 </div>
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     55       Content and design by Vincent Demeester
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