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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Error Budget Calculator</title>
<meta name="description" content="Calculate the tolerable downtime of your service">
<meta name="keywords" content="Error Budgets,SRE,Site Reliability Engineering,SLA,SLO,SLI">
<meta name="author" content="Pavlos Ratis">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB"
crossorigin="anonymous">
<link rel="stylesheet" href="static/styles.css">
<script type="text/javascript" src="static/calculator.js"></script>
</head>
<body>
<main role="main">
<div class="container">
<a href="https://github.com/dastergon/error-budget-calculator">
<img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/38ef81f8aca64bb9a64448d0d70f1308ef5341ab/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f6461726b626c75655f3132313632312e706e67"
alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png">
</a>
<header class="major">
<h2>Error Budget Calculator</h2>
<p>Calculate the tolerable downtime of your service.</p>
<p>Error Budgets are a framework for managing risk and bringing balance between development and SREs. In particular,
they are basically used to measure how much risk we are willing to tolerate in a service. As long as
the measured uptime/availability is above the SLA/SLO, there is an error budget remaining. Consequently, new
features and releases can be pushed to production.</p>
</header>
<form action="">
<div class="form-group row">
<label class="col-3 col-form-label" for="availability" title="This value can be either the uptime or the request success rate as measured by a monitoring system">Measured Availability (%):</label>
<div class="col-10">
<input type="number" step="any" min="0" max="100" class="form-control" id="availability" placeholder="Enter Availabilty"
name="availability">
</div>
<label class="col-3 col-form-label" for="sla" title="This value is the availability target defined in your SLA/SLO">SLA/SLO Threshold (%):</label>
<div class="col-10">
<input type="number" step="any" min="0" max="100" class="form-control" id="sla" placeholder="Enter SLA/SLO target" name="sla">
</div>
</div>
<input type="button" value="Calculate" onclick="errorBudgetCalculator()">
</form>
<p id="error-budget-table"></p>
<p id="note">To calculate how much downtime should be permitted in your SLA or SLO, check the <a href="https://dastergon.gr/availability-calculator/">Availability Calculator</a>.</p>
<h3>Resources</h3>
<ul>
<li>
<a href="https://www.usenix.org/node/189332">Error Budgets and Risks</a>
</li>
<li>
<a href="https://www.usenix.org/conference/srecon16/program/presentation/jones">Service Levels and Error Budgets</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=y2ILKr8kCJU">Risk and Error Budgets</a>
</li>
<li>
<a href="https://cloudplatform.googleblog.com/2017/05/know-thy-enemy-how-to-prioritize-and-communicate-risks-CRE-life-lessons.html">Know thy enemy: how to prioritize and communicate risks - CRE life lessons</a>
</li>
<li>
<a href="https://queue.acm.org/detail.cfm?id=3096459">The Calculus of Service Availability</a>
</li>
<li>
<a href="https://dastergon.gr/availability-calculator/">Availability Calculator</a>
</li>
<li>
<a href="https://github.com/dastergon/awesome-sre">Site Reliability Engineering Resources</a>
</li>
</ul>
<footer id="footer">
<a href="https://dastergon.gr">Pavlos Ratis</a> | 2018
</footer>
</div>
</main>
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN"
crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script> window.jQuery || document.write('<script src="../../assets/js/vendor/jquery.min.js"><\/script>') </script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js" integrity="sha384-smHYKdLADwkXOn1EmN1qk/HfnUcbVRZyYmZ4qpPea6sjB/pTJ0euyQp0Mk8ck+5T"
crossorigin="anonymous"></script>
</body>
</html>