Category · Technical
Technical
Deep dives into Shopify Functions, checkout validation, and the technical foundations of server-side order enforcement.
Technical
Technical
Estimated Delivery Dates That Account for Japanese Holidays
Show an accurate 'Arrives' estimate on Shopify product pages with holiday-aware business-day counting that skips weekends, blackout dates, and Japanese national holidays.
Jul 24, 20262 min read
Technical
Technical
Hand Shipment Data to Yamato, Sagawa & Japan Post via CSV (Shopify)
Export Shopify shipments into the official Yamato B2クラウド, Sagawa e飛伝III, and Japan Post ゆうプリR CSV layouts — Shift-JIS, one row per shipment, with tracking import.
Jul 24, 20262 min read
Technical
Technical
Shopify Checkout Validation: How to Block Invalid Orders with Shopify Functions
How Shopify Functions checkout validation works, why server-side enforcement beats client-side workarounds, and how OrderRules uses it to block orders for daily caps, cutoff times, per-customer limits, and store hours.
May 3, 20268 min read