§01 writing
Writing
Long posts about things I got stuck on: rate limiting, multi-tenant systems, and rooting a projector. Older stuff is on Medium.
oct 8, 2026
11 min read
Sharing an Outbound Rate Limit Across Node.js Workers
Four workers with an 80-request limit can still send 320 requests a second. How shared Redis budgets, queues, and provider cooldowns keep outbound API calls under control.
sep 10, 2026
13 min read
Rooting My Projector After We Forgot the Remote
A missing remote led to a persistent Go server on an Android projector, an OEM backdoor, and a phone-controlled player backed by NetMirror and an anime aggregator API.
jun 16, 2026
10 min read
Building a WhatsApp Service for a Multi-Tenant CRM
A WhatsApp Cloud API integration for a fitness CRM: tenant onboarding, credential boundaries, queued sends, and delivery analytics.