Archive: September 2025

1. ARG vs. ENV in the Dockerfile, Properly Explained

   Sep 30, 2025

   ARG and ENV look interchangeable at first glance, both set a named value after all. Anyone who does not know the difference in visibility, runtime behavior, and multi-stage build scoping easily ends up with images that produce unexpected values at runtime or, worse, accidentally bake credentials permanently into an image layer.

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2. App Clips and Instant Apps for Instant First Use | Mironsoft

   Sep 30, 2025

   App Clips on iOS and Instant Apps on Android deliver small, tightly scoped parts of an app, triggered by a QR code or link, with no full installation required. This article covers architecture, size limits, and the practical feasibility with React Native.

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3. CSS prefers-reduced-motion: Making Animations Accessible

   Sep 30, 2025

   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.

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4. Virtual Types in Magento 2 di.xml: Clone Classes Without Code | Mironsoft

   Sep 30, 2025

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5. Building Magento setup:upgrade Safely Into Your Deployment Pipeline

   Sep 30, 2025

   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.

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6. maxmemory-policy Compared: Which Eviction Fits When

   Sep 29, 2025

   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.

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7. Building Accessible Alpine.js Components

   Sep 29, 2025

   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.

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8. Selective Testing: Running Only Affected Tests

   Sep 29, 2025

   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.

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9. Log Management and Monitoring in Magento 2: from exception.log to Real Alerting

   Sep 29, 2025

   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.

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10. Magento Blue Green Deployments with Containers Without Downtime

    Sep 29, 2025

    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.

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