For people with vestibular disorders, migraines, or epilepsy, excessive animation on websites can trigger real physical discomfort. The CSS media query prefers-reduced-motion gives developers a way to respect that system-wide preference, and WCAG 2.2 makes it a requirement. This article explains the background, the correct implementation strategies, and the most common mistakes.
Virtual Types in di.xml: Clone Classes Without Code
How to specialize classes through pure XML configuration, create multiple loggers with different handlers, and build decorator chains without any PHP code.
Virtual Types are one of the most powerful and most frequently misunderstood features of Magento's DI system. They let you use a single class multiple times with different configurations, without writing a single line of PHP code. Instead of creating a new class, you create a virtual name for
setup:upgrade is the only command in the Magento deployment process that directly changes the production database. It does not run in the build job, it is not a test, it runs on the live system. A team that does not secure this step is building a deployment process that regularly needs luck when database migrations are involved.
A poorly chosen maxmemory-policy leads either to write commands being rejected in the middle of production or to the silent loss of important data that was actually meant to persist. Understanding how Redis manages memory under pressure lets you pick the right policy deliberately instead of by accident, avoiding both outcomes reliably.
Alpine.js components often look interactive and modern, yet remain unusable for screen reader and keyboard users whenever ARIA attributes are not reactively wired to component state. This article shows, hands on, how to correctly use x-bind:aria-expanded, x-on:keydown and clean focus management, then builds a fully accessible accordion and a dropdown menu from scratch, including keyboard navigation and screen reader support.
Running a growing Cypress or Playwright suite in full on every commit quickly burns valuable minutes of feedback time and CI budget. This article shows in practice how feature tags, dependency graphs, and git-diff heuristics reliably identify affected tests, while scheduled full runs continue to serve as a safety net against overlooked regressions.
A growing exception.log is not monitoring, it is just a record. This article shows how Magento logs turn into a resilient log management and monitoring system: with custom Monolog handlers, central aggregation in Grafana Loki or ELK, alerting rules that avoid alert fatigue, and trace correlation across request boundaries.
A generic blue green deployment simply swaps two container versions. For Magento that is not enough, because indexers, cache, sessions and database migrations complicate the color switch. This article shows how blue green deployments for Magento in containers are built so the traffic switch actually happens without downtime and without inconsistent data.
A project that has grown for years without strictNullChecks will very likely have hundreds or thousands of spots where null or undefined are not handled. Flipping strictNullChecks on in such a project usually breaks the build immediately with an overwhelming list of errors, which is why a gradual, folder-by-folder migration is almost always the only realistic path.
PHP was originally invented as a templating language, long before it became the general purpose programming language it is today. That very origin makes plain PHP templating dangerously uncontrolled, since neither sandboxing nor automatic escaping are built in. We build a minimal engine with variable interpolation and auto-escaping, and show what mechanism actually powers Twig under the surface.