<p class="p1" data-mce-fragment="1">Insight into how Shopify created a seamless one-click manual testing experience (known as "tophatting") for mobile applications by creating a macOS app.</p><p><a class="read-more" href="https://shopify.engineering/shopify-tophat-mobile-developer-testing">More</a></p>

How we shipped ES module integrity in browsers and made commerce and the web better for everyone!<p><a class="read-more" href="https://shopify.engineering/shipping-support-for-module-script-integrity-in-chrome-safari">More</a></p>

<meta charset="utf-8"><span data-mce-fragment="1">Shop app horizontally scaled a Ruby on Rails app with Vitess. This blog describes Vitess and our detailed approach for introducing Vitess to a Rails app.</span><p><a class="read-more" href="https://shopify.engineering/horizontally-scaling-the-rails-backend-of-shop-app-with-vitess">More</a></p>

<meta charset="utf-8"><span>Jeff Charles, a Senior Shopify Developer, shares key learnings from his successful pull request to Winch. The pull request aimed to add support for various WebAssembly instructions to Wasmtime's baseline (non-optimizing) compiler.</span><p><a class="read-more" href="https://shopify.engineering/contributing-support-for-a-wasm-instruction-to-winch">More</a></p>

<meta charset="utf-8"><span>In this article, I’ll cover how we added flexibility to our previous one-size-fits-all order routing system with the introduction of “routing rules”, and how we dogfooded our own Shopify Functions feature to give merchants the ability to create their own routing rules.</span><p><a class="read-more" href="https://shopify.engineering/creating-a-flexible-order-routing-system-with-shopify-functions">More</a></p>

<meta charset="utf-8"><span><span>At the beginning of this year, we ran several experiments aimed at reducing the latency impact of the Ruby garbage collector (GC) in Shopify's monolith. </span></span><meta charset="utf-8"><span>In this article, Jean talks about the changes we made to improve GC performance, and more importantly, how we got to these changes.</span><p><a class="read-more" href="https://shopify.engineering/adventures-in-garbage-collection">More</a></p>

<meta charset="utf-8">A look at Shopify’s experience improving state management in the Shopify POS app by migrating from a Vanilla Redux codebase to Redux Toolkit one.<p><a class="read-more" href="https://shopify.engineering/react-redux-toolkit-migration">More</a></p>

A <span>staff developer is an adaptable engineering leader that's comfortable working with ambiguity.</span><p><a class="read-more" href="https://shopify.engineering/what-being-a-staff-developer-means-at-shopify">More</a></p>

<meta charset="utf-8"><span>Passkeys are a new login credential based on public-key cryptography that replace the need for username and password sign-ins.</span><p><a class="read-more" href="https://shopify.engineering/supporting-passkeys-in-shop-authentication-flows">More</a></p>

<meta charset="utf-8"><p><span style="font-weight: 400;">Here are a few internationalization (i18n) best practices to help front-end developers avoid errors and serve more robust text content on multilingual websites and apps.</span></p><p><a class="read-more" href="https://shopify.engineering/internationalization-i18n-best-practices-front-end-developers">More</a></p>

<meta charset="utf-8"><span>Learn how Shopify Data built new online inference capabilities into its Machine Learning Platform to deploy and serve models for real-time prediction at scale.</span><p><a class="read-more" href="https://shopify.engineering/shopifys-machine-learning-platform-real-time-predictions">More</a></p>

<meta charset="utf-8"><span>The </span><a href="https://github.com/Shopify/ruby-lsp" target="_blank" title="Shopify / ruby-lsp on GitHub" rel="noopener noreferrer">Ruby LSP</a> is<span> a new language server built at Shopify that makes coding in Ruby even better by providing extra Ruby features for any editor that has a client layer for the LSP. In this article, we’ll cover how we built the Ruby LSP, the features included within it, and how you can install it. </span><p><a class="read-more" href="https://shopify.engineering/improving-the-developer-experience-with-ruby-lsp">More</a></p>

<meta charset="utf-8"><p>Monkey patching is considered one of the more powerful features of the Ruby programming language. However, by the end of this post I’m hoping to convince you that they should be used sparingly, if at all, because they are brittle, dangerous, and often unnecessary. I’ll also share tips on how to use them as safely as possible in the rare cases where you<span> </span><em>do<span> </span></em>need to monkey patch.</p><p><a class="read-more" href="https://shopify.engineering/the-case-against-monkey-patching">More</a></p>

<meta charset="utf-8"><span>Let’s talk about technical debt. Let’s talk about practical usable approaches for actually paying it down on a daily, weekly, monthly, and yearly basis. Let’s talk about what debt needs to be fixed now versus what can wait for better planning.</span><p><a class="read-more" href="https://shopify.engineering/technical-debt-25-percent-rule">More</a></p>

<meta charset="utf-8"><span>We recently released </span><a href="https://www.shopify.com/ca/enterprise/shopifyql-notebooks" target="_blank" title="ShopifyQL Notebooks" rel="noopener noreferrer">ShopifyQL Notebooks</a><span>, a powerful self-serve tool which enables merchants to explore their business metrics without any SQL expertise. Here’s how we used ShopifyQL and commerce data models to make it possible.</span><p><a class="read-more" href="https://shopify.engineering/building-commerce-data-models-with-shopifyql">More</a></p>

<p><span style="font-weight: 400;">While we’re working on getting our Shopify Functions infrastructure ready for the public beta, we thought we’d use this opportunity to shine some light on how we brought JavaScript to WebAssembly, how we made everything fit within our very tight Shopify Function constraints, and what our plans for the future look like.</span></p><p><a class="read-more" href="https://shopify.engineering/javascript-in-webassembly-for-shopify-functions">More</a></p>

The intensive data work behind Shopify's Tax Insights feature required <meta charset="utf-8"><span>building functionality to handle dynamically changing information</span><p><a class="read-more" href="https://shopify.engineering/complex-data-models-behind-shopify-tax-insights">More</a></p>

<meta charset="utf-8"><span><span>The hardest part of writing tests is setting things up. F</span></span><span>ull test suites have a lot of complicated helper tools, stubs, and fixtures. They’re not easy to understand as a beginner, let alone set up for yourself. This post covers the four things you can do to get started.<br></span><p><a class="read-more" href="https://shopify.engineering/the-hardest-part-of-writing-tests-is-getting-started">More</a></p>

Let’s unpack our approach to BFCM Scale Testing to explore some of what it takes to ensure that our ecommerce platform can handle the busiest weekend of the year.<p><a class="read-more" href="https://shopify.engineering/scale-performance-testing">More</a></p>

<p><span style="font-weight: 400;">This story looks at the opportunity Dev Degree gave me, the challenges I overcame, and the weaknesses that turned out to be strengths. If you’re thinking about a career in tech, but don’t think you have the stuff for it, this story is for you. </span></p><p><a class="read-more" href="https://shopify.engineering/from-farmer-to-security-engineer">More</a></p>