Zero-Downtime Postgres Migrations: The Mistakes That Locked My Production Database 5/15/2026 A single ALTER TABLE on a 40 million row table can freeze your app for forty minutes. Most migration tutorials skip the part where the database is also serving live traffic. Here is what shipping schema changes to a real production Postgres in 2026 actually looks like, including the operations I now refuse to run during business hours.
Server-Sent Events vs WebSockets in 2026: When Each One Actually Wins 5/14/2026 WebSockets get reached for by reflex. Half the time the right answer is the boring one nobody talks about: Server-Sent Events. Here is the actual decision framework for real-time features in 2026, and the cost both choices hide from you.
Stripe Webhooks in Production: Idempotency, Retries, and the Mistakes That Cost Me Real Money 5/14/2026 Stripe webhooks look like a five-minute integration in the docs. Then a customer is double-charged, a subscription event arrives out of order, your handler 500s for an hour, and Stripe quietly retries the same event 47 times. Here is what shipping webhooks to real billing flows actually looks like in 2026.