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<!doctype html>
<html lang="en">
<head>
<meta name="generator" content="Hugo 0.131.0">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jhandguy</title>
<link rel="stylesheet" href="/css/bulma.min.css">
<link rel="stylesheet" href="/css/custom.css">
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<body>
<nav class="navbar">
<div class="navbar-brand">
<a class="navbar-item" href="/">
Home
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<div class="navbar-item">
<a class="button is-link" href="/about">
<strong>About me</strong>
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</nav>
<section class="hero">
<div class="hero-body">
<p class="title is-spaced">Hi there! 👋</p>
<p class="subtitle">Welcome to <strong>Jean</strong>'s blog!</p>
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</section>
<section class="section pt-2">
<div class="container is-max-desktop">
<div class="content">
<p class="title is-spaced">Articles</p>
<p class="subtitle">Frequently published articles about Software Engineering and SRE!</p>
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<div class="box mb-6">
<p class="subtitle">Categories</p>
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<a href="/">
<div class="tag is-medium is-hoverable is-link">all</div>
</a>
</div>
<div>
<a href="/tags/aws">
<div class="tag is-medium is-hoverable ">aws</div>
</a>
</div>
<div>
<a href="/tags/canary-deployment">
<div class="tag is-medium is-hoverable ">canary deployment</div>
</a>
</div>
<div>
<a href="/tags/ci-cd">
<div class="tag is-medium is-hoverable ">ci cd</div>
</a>
</div>
<div>
<a href="/tags/design-pattern">
<div class="tag is-medium is-hoverable ">design pattern</div>
</a>
</div>
<div>
<a href="/tags/horizontal-scaling">
<div class="tag is-medium is-hoverable ">horizontal scaling</div>
</a>
</div>
<div>
<a href="/tags/ios">
<div class="tag is-medium is-hoverable ">ios</div>
</a>
</div>
<div>
<a href="/tags/sre">
<div class="tag is-medium is-hoverable ">sre</div>
</a>
</div>
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<a href="/tags/testing">
<div class="tag is-medium is-hoverable ">testing</div>
</a>
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<a href="/tags/vertical-scaling">
<div class="tag is-medium is-hoverable ">vertical scaling</div>
</a>
</div>
</div>
</div>
</div>
<div class="container is-max-desktop fixed-grid has-1-cols-mobile">
<div class="grid">
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/farewell-ecs-hello-eks/">
<p class="title is-spaced is-5">Farewell, ECS! Hello, EKS: A Kubernetes Migration Story</p>
<p class="subtitle has-text-justified is-6">Learn how we migrated EGYM’s production workloads on AWS from ECS to EKS with zero downtime!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">AWS</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Feb 28, 2024</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/vertical-pod-autoscaler/">
<p class="title is-spaced is-5">Vertical Pod Autoscaler in Kubernetes</p>
<p class="subtitle has-text-justified is-6">Learn how to use Vertical Pod Autoscaler (VPA) to vertically scale services in Kubernetes automatically based on resource metrics.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">SRE</div>
<div class="tag">Vertical Scaling</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Nov 8, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/advanced-horizontal-autoscaling/">
<p class="title is-spaced is-5">Horizontal Pod Autoscaler in Kubernetes (Part 2) — Advanced Autoscaling using Prometheus Adapter</p>
<p class="subtitle has-text-justified is-6">Learn how to use Prometheus Adapter to horizontally scale services in Kubernetes automatically based on Prometheus metrics.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Horizontal Scaling</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Aug 3, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/simple-horizontal-autoscaling/">
<p class="title is-spaced is-5">Horizontal Pod Autoscaler in Kubernetes (Part 1) — Simple Autoscaling using Metrics Server</p>
<p class="subtitle has-text-justified is-6">Learn how to use Metrics Server to horizontally scale native and JVM services in Kubernetes automatically based on resource metrics.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Horizontal Scaling</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Jul 6, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/incremental-mobile-force-update/">
<p class="title is-spaced is-5">Incremental Mobile Force Update using Ingress NGINX and Firebase Remote Config</p>
<p class="subtitle has-text-justified is-6">Learn how to conduct a mobile force update incrementally with a simple canary deployment using Ingress NGINX and Firebase Remote Config.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Canary Deployment</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Mar 10, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/smart-canary-deployment/">
<p class="title is-spaced is-5">Canary Deployment in Kubernetes (Part 3) — Smart Canary Deployment using Argo Rollouts and Prometheus</p>
<p class="subtitle has-text-justified is-6">Learn how to use Argo Rollouts with Prometheus to automate the detection and rollback of faulty deployments using AnalysisTemplates.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Canary Deployment</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Feb 2, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/automated-canary-deployment/">
<p class="title is-spaced is-5">Canary Deployment in Kubernetes (Part 2) — Automated Canary Deployment using Argo Rollouts</p>
<p class="subtitle has-text-justified is-6">Learn how to use Argo Rollouts to improve a Canary Deployment setup using Ingress NGINX and automate incremental rollouts.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Canary Deployment</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Jan 25, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/simple-canary-deployment/">
<p class="title is-spaced is-5">Canary Deployment in Kubernetes (Part 1) — Simple Canary Deployment using Ingress NGINX</p>
<p class="subtitle has-text-justified is-6">Learn how to use Ingress NGINX to set up a Canary Deployment allowing isolated Smoke Testing and incremental rollout to minimize risk.</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Canary Deployment</div>
<div class="tag">SRE</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Jan 18, 2022</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/path-to-cicd-nirvana-ios/">
<p class="title is-spaced is-5">A Path to CI / CD Nirvana in iOS</p>
<p class="subtitle has-text-justified is-6">Yes, that's right, Mobile DevOps is a thing!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">CI CD</div>
<div class="tag">iOS</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Sep 12, 2019</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/robot-pattern-ios/">
<p class="title is-spaced is-5">UI Testing in iOS - Robot Pattern</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's UI Testing tip: the Robot Pattern!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">iOS</div>
<div class="tag">Testing</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">May 3, 2019</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/generating-accessibility-identifiers-ios/">
<p class="title is-spaced is-5">UI Testing in iOS - Generating Accessibility Identifiers using Reflection</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's UI Testing tip: Generating Accessibility Identifiers using Reflection!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">iOS</div>
<div class="tag">Testing</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Apr 18, 2019</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/disabling-animations-ios/">
<p class="title is-spaced is-5">Painless UI Testing in iOS (Part 3) - Disabling Animations</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's UI Testing tip: Disabling Animations!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">iOS</div>
<div class="tag">Testing</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Feb 25, 2019</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/stubbing-the-navigation-ios/">
<p class="title is-spaced is-5">Painless UI Testing in iOS (Part 2) - Stubbing the Navigation</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's UI Testing tip: Stubbing the Navigation!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">iOS</div>
<div class="tag">Testing</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Feb 18, 2019</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/mocking-the-network-ios/">
<p class="title is-spaced is-5">Painless UI Testing in iOS (Part 1) - Mocking the Network</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's UI Testing tip: Mocking the Network!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">iOS</div>
<div class="tag">Testing</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Jan 11, 2019</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/factory-design-pattern-ios/">
<p class="title is-spaced is-5">Lightweight Design Patterns in iOS (Part 4) - Factory</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's iOS Design Pattern: the Factory!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Design Pattern</div>
<div class="tag">iOS</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Nov 26, 2018</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/coordinator-design-pattern-ios/">
<p class="title is-spaced is-5">Lightweight Design Patterns in iOS (Part 3) - Coordinator</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's iOS Design Pattern: the Coordinator!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Design Pattern</div>
<div class="tag">iOS</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Nov 19, 2018</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/presenter-design-pattern-ios/">
<p class="title is-spaced is-5">Lightweight Design Patterns in iOS (Part 2) - Presenter</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's iOS Design Pattern: the Presenter!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Design Pattern</div>
<div class="tag">iOS</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Nov 12, 2018</time>
</div>
</div>
</a>
<a class="is-flex is-flex-direction-column cell box marginless" href="https://jhandguy.github.io/posts/observer-design-pattern-ios/">
<p class="title is-spaced is-5">Lightweight Design Patterns in iOS (Part 1) - Observer</p>
<p class="subtitle has-text-justified is-6">Let's have a look at today's iOS Design Pattern: the Observer!</p>
<div class="is-flex-grow-1"></div>
<div>
<div class="tag">Design Pattern</div>
<div class="tag">iOS</div>
<div class="is-pulled-right">
<time datetime="2006-1-02" class="is-size-7">Nov 6, 2018</time>
</div>
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