Page 307 - Maxim Mironjuk

Where Redis Pub/Sub irrevocably loses messages the moment no subscriber is listening, a Redis Stream stores every message durably in memory, with a sequential ID, consumer groups for distributed processing, and explicit acknowledgment via XACK. That makes Streams a lightweight alternative to Kafka for medium sized event logs.

Database replication distributes data from a primary instance to one or more replica instances, in order to scale read load and increase fault tolerance. Anyone who does not clearly distinguish synchronous from asynchronous replication risks either unnecessary latency or silent data loss during failover.

The right debugging tool for GraphQL is not always the best known one. Whether browser-embedded, desktop app, or API client, each tool has its place in the diagnostic workflow. Knowing each tool's strengths means debugging queries, auth issues, and resolver errors more efficiently.

Mount points decide how and where data ends up on a Linux server, and the choice of filesystem determines performance, safety, and recoverability when things go wrong. This article explains the mechanics behind mount, the correct fstab syntax, and shows with concrete examples when ext4, XFS, or Btrfs is genuinely the right choice on a production server.

Claude can turn a plain-language description of a schema change into a first draft of a db_schema.xml diff or a data patch, speeding up the early stages of a Magento database migration considerably. Still, no AI suggestion replaces manual review, since changes to production data are rarely reversible without consequences and deserve extra care at every single step.

Event-driven architectures promise loose coupling and scalability, but bring their own, often underestimated pitfalls: events processed twice, incompatible schema changes, and flows across many consumers that are hard to follow. Claude can help think through event schema, communication patterns, and typical failure modes, if you ask the right questions.

Module Federation in Webpack 5 solves what has long been the hardest problem in micro-frontend architectures: how multiple independent teams can combine their JavaScript bundles at runtime, without loading shared dependencies multiple times or sharing a central build pipeline.

A Magento production server is only as secure as its least hardened service. This article shows, hands-on, how to systematically shrink the attack surface by disabling unneeded services, automating security updates, enforcing non-root execution, correcting file permissions, running fail2ban, and hardening SSH, with a direct tie-in to the Mark Shust docker-magento setup and typical Debian or Ubuntu production environments.

CSS :has() is the first true parent selector in the history of CSS. In Tailwind v4 you use it directly in the markup: has-[:checked], has-[input:focus], has-[.error]. It lets styles react to the state of child elements, with no JavaScript and no custom CSS file.

Every new database connection costs memory, CPU time, and time for the connection setup itself. Connection pooling keeps a limited number of reusable connections open and prevents an application from opening more connections under load than the database can handle. Get pool size wrong and you either produce connection errors or waste capacity.