Storefronts and catalogs built from scratch, not on a platform.
Category and brand filtering feels simple with ten products. At real catalog size, naive facet counting turns every filter click into a full table scan. Here's how we kept multi-facet search fast for a niche-gadget storefront.
5 min readOne-time-password login looks simple until real users start mistyping codes, hammering resend, and hitting it from three cities at once. Here's how we kept OTP sign-up fast and abuse-resistant across a multi-city launch.
5 min readHow we structured a vendor feed of 7M+ products into a staged pipeline (ingest, enrich, categorise, distribute) so a full refresh and a four-hourly price sync could run without manual intervention.
7 min readGenerate consistent SKU codes in bulk from a custom pattern with variant permutations, sequential numbering and collision checking.
Convert product codes between GTIN-8, GTIN-12 (UPC-A), GTIN-13 (EAN-13) and GTIN-14, validate check digits, and normalise a whole catalog in bulk.
Check a product CSV for missing columns, broken variant handles, duplicate SKUs, invalid barcodes and bad prices before you import it.
