@adamosoftware

Why we run two PostgreSQL clusters for one booking system: separating writes from reads at scale

6d ago · 9 min read · A booking system has a split personality. Every search query wants to read availability across thousands of properties for a given date range. Every booking confirmation wants to write a row, lock inv

Observability for distributed booking workflows: tracing a booking through 6 services without losing context

May 5 · 13 min read · A booking that fails at 11:47 PM on a Friday is not a debugging exercise. It is a forensic exercise. By the time the customer support ticket arrives Monday morning, the request has touched six microse

Designing idempotency keys for distributed booking systems: 3 patterns that survived production

Apr 28 · 11 min read · Booking systems are a particularly unforgiving environment for idempotency bugs. A duplicate hotel reservation creates a billing dispute. A duplicate payment charge creates a refund workflow. A duplic

Why we stopped using REST for travel inventory sync, and what we use instead

Apr 21 · 9 min read · When you build a travel booking platform, inventory sync is the quiet problem that defines everything else. Rates, availability, restrictions, stop-sells, allocation changes. They come from dozens of

Solving the "Inventory Nightmare": Handling high-concurrency and race conditions in Global Hotel Booking Engines

Apr 14 · 5 min read · In the high-stakes ecosystem of Online Travel Agencies (OTAs) and Global Distribution Systems (GDS), there is a recurring ghost that haunts architects: The Double-Booking. Imagine a flash sale for a l