Page 4 - Monthly Archives: July 2025

A container is not a virtual machine, it is an isolated process sharing the same kernel with the host. Container escape prevention means consistently hardening exactly that boundary: no unnecessary privileges, no mounted sockets, active seccomp and AppArmor profiles, and a current kernel, so a compromised container never becomes a stepping stone to the host.

Gift cards in Magento 2 are more than a simple voucher field: a clean data model in the giftcardaccount, secure code generation, correct checkout total integration, multiple redemption per cart, a resilient admin workflow for batch campaigns, and hardened API protection for headless and GraphQL checkouts decide whether gift cards work reliably and securely in production.

Expo has grown from a limited sandbox into a full toolchain for React Native that now supports even complex native modules. The bare workflow still matters when maximum native control is required. This article shows how Expo really works today and when switching to bare is actually necessary.

A raw list of commit messages is not a changelog anyone wants to read. Claude can categorize, summarize, and structure a commit history between two releases into something users and developers actually understand. This article shows the practical workflow, the distinction from tools like semantic-release, and the quality control it needs.

As soon as more than one product uses the same Tailwind design system, every change to tokens or components becomes a potential breaking change for someone else's code. Semantic versioning, a maintained changelog and clear deprecation periods turn a risky update into a planned, communicated step.

A cron job that runs longer than its scheduled interval quietly starts a second time, even though the first run has not finished yet. Two parallel database exports, two simultaneous backup processes, or two import scripts blocking each other are the result, often without an immediately visible error message. This article shows how flock reliably prevents overlapping cron jobs, both directly in crontab and inside scripts, and where the limits of simpler locking approaches lie.

When a user scrolls inside a modal or dropdown to its edge, the browser by default simply keeps scrolling the page behind it, an effect called scroll chaining. overscroll-behavior deliberately interrupts that handoff at a container's boundary and also prevents accidentally triggering pull-to-refresh on mobile devices, entirely without preventDefault workarounds in JavaScript.

CSS Nesting is natively available in all modern browsers in 2026. The & selector, nested media queries, and at-rules like @layer and @supports inside rule blocks make preprocessors unnecessary for many projects. What once required Sass, Less, or PostCSS now works directly in the browser, with no build step, no source maps, and no dependencies.

Legacy code is code without tests, and it cannot be changed safely without tests. The way out of this dilemma begins with characterization tests: tests that document the actual behavior, not the desired one. Introduce seams, break static dependencies and extract classes step by step, without changing a single line of production logic before the first test is green.

A Slack message that merely reports "build failed", without stating which test was affected, since when the problem exists, or whether it's even known flakiness, forces every recipient to click into the CI interface just to answer the most basic question of what actually happened. A well-designed Slack integration instead delivers enough context in the alert itself to immediately gauge urgency, while targeted filtering keeps the team from sliding into dangerous alert fatigue through permanent, ultimately ignored noise.