Practical insights and guides on PHP/Symfony, React/Next.js, legacy modernization, and software architecture, drawn from 18+ years of building web applications for European businesses.
A full frontend rewrite is the riskiest way to escape jQuery. This guide lays out a practical, island-by-island migration path so production keeps shipping while React gradually takes over.
Read moreWithout idempotency keys, a retried API request can charge a customer twice or provision a workspace twice. Here is how to implement exactly-once semantics for the operations that matter most.
Read moreA blunt rate limit protects your API but alienates your best customers during legitimate traffic spikes. Here is how to design per-tenant quotas, token-bucket policies, and fair-use tiers that keep the system safe without punishing honest usage.
Read moreCron on a single server fails silently the moment that box dies or a job overruns. This post walks through designing scheduled and recurring tasks in Symfony and Node with distributed locking, observability, and failure handling that survive real production.
Read moreClient-side A/B tools flicker, leak data, and cannot touch server-only logic. Here is how to build a server-side experimentation system you own: deterministic assignment, exposure logging, and analysis - no third-party vendor required.
Read moreA practical guide to setting up OpenTelemetry in PHP and Node.js applications - traces, metrics, and logs that work with any backend, no vendor strings attached.
Read moreSending webhooks to customers sounds simple until your delivery pipeline starts dropping events silently. This post walks through the architecture decisions that separate a webhook system customers can build against from one that quietly fails them.
Read moreNotifications look trivial until you need per-user preferences, multiple delivery channels, deduplication, and retry guarantees. This post designs a production-ready notification system for SaaS that respects user choice and never double-sends under retries.
Read moreAPI versioning decisions made early in a SaaS product can haunt you for years. This guide compares URL, header, and additive versioning strategies - plus a deprecation process that keeps integrators on side.
Read moreRead replicas scale reads beautifully until a user reads their own write and sees old data. Here is how to route queries in Symfony and Doctrine safely and handle replication lag honestly.
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