Essays on multi-tenant SaaS, white-label marketplace and real-time commerce architecture, from 14+ years of shipping platforms teams can run.https://devsaran.comen-ushttps://devsaran.com/writing/choosing-a-multi-tenant-data-modelhttps://devsaran.com/writing/choosing-a-multi-tenant-data-modelTenant isolation is the one architectural choice you can't cheaply undo. Here's the spectrum of multi-tenant data models, the trade-offs that actually bite, and how I decide — from years of running multi-tenant platforms.Mon, 15 Jun 2026 00:00:00 GMTArchitecturehttps://devsaran.com/writing/what-white-label-demands-of-architecturehttps://devsaran.com/writing/what-white-label-demands-of-architectureWhite-label looks like a theming feature. It's really a multi-tenancy commitment that touches your data model, identity, branding, and every assumption about scale. Here's what it costs — and how I design for it.Mon, 15 Jun 2026 00:00:00 GMTArchitecturehttps://devsaran.com/writing/migrating-off-legacy-cms-without-losing-seohttps://devsaran.com/writing/migrating-off-legacy-cms-without-losing-seoRebuild on a modern stack and you can watch a decade of rankings evaporate — because the authority lives in the URLs you're about to delete. Here's the migration checklist I actually run, using this site as the example.Sun, 14 Jun 2026 00:00:00 GMTEngineeringhttps://devsaran.com/writing/anatomy-of-a-real-time-order-pipelinehttps://devsaran.com/writing/anatomy-of-a-real-time-order-pipelineThe order is where a commerce platform is judged — and where naive systems drop, double-charge, or stall under a lunch rush. Here's how I design order pipelines to stay correct and real-time when traffic spikes.Sat, 13 Jun 2026 00:00:00 GMTArchitecture