Thoughts, tutorials, and insights
How to translate GPSR, DSA, GDPR, BDO, and DAC7 obligations into a reasonable MVP, without designing infrastructure for millions of listings. A practical architectural overview for marketplace builders.
A marketplace layer can be added to an existing online store without replacing the underlying platform. Inventory synchronization across vendors is the most complex part of the integration. The store operator retains full control over orders and the customer experience.
Cache in a marketplace is a design problem about source of truth and invalidation, not just a performance trick. We solved real Next.js issues: two-layer promotions cache, nested unstable_cache bypassing Data Cache, ISR storing skeleton-only HTML, recommendation fan-out, and broken splitChunks.
Building an e-commerce integration hub for Artovnia, we discovered that OAuth being mentioned in documentation isn't enough. Each of the four platforms - WooCommerce, Shopify, Shoper, and PrestaShop - required a different installation and onboarding model.
Postgres JIT spent 2,054ms compiling a query that ran in 1.4ms. A real-world case study from Artovnia's Medusa.js checkout: how a default Postgres 12+ setting was eating 2–3 seconds on every cart mutation.
How I responded to a phishing attack through Artovnia's buyer-to-seller contact form — from immediately disabling the module and banning the attacker to implementing weighted scoring detection, entry-level blocking, and a moderation panel.
