Payments26 Aug 2026
Fix Stripe Webhook Signature Verification in NestJS
Fix "no signatures found matching the expected signature for payload" in NestJS. Configure raw body capture for Express and Fastify to verify Stripe webhooks.
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Databases21 Aug 2026
Why Your NestJS Aggregation Pipeline Is Slow (It's Not Your Indexes)
Most MongoDB aggregation slowdowns in NestJS come from stage order, not missing indexes. Here's how to fix $lookup memory spikes and force IXSCAN.
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Payments20 Aug 2026
Stripe Metered Billing in NestJS — Idempotent Usage Records at Scale
How to buffer usage events with Redis Streams and report them to Stripe without hitting 429s or double-charging customers, using a NestJS batch worker and deterministic idempotency keys.
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Backend18 Aug 2026
Why Your NestJS API Slows Down Under Load (And It's Probably Not the Database)
A field guide to diagnosing V8 memory leaks and event loop lag in high-throughput NestJS APIs — measuring lag with perf_hooks, killing RxJS subscription leaks, and offloading CPU work to worker threads.
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