Why Your p99 Latency Destroys Node.js Event Loop Throughput - Theory and Practice
· 5 min read
An interactive M/G/1 queue simulator that shows why a slow tail latency wrecks throughput — and what the event loop cost really looks like.
Bitmaps for Access Control: Scaling Notification Fan-Out with Redis ACL Checks
· 6 min read
Why bitmaps are an efficient way to do access-control checks for high-volume real-time notifications, and when to use them.
The Tale of How We Paid Back Years of Tech Debt in a Month
· 5 min read
How an oversized IAM session object caused cascading infrastructure problems, and why trimming hot-path data models often beats scaling.
Open Source Tales #1: WebSocket Operator
· 5 min read
How I turned an old scaling problem into an open source experiment, and why platform-native routing beats application-level workarounds for stateful systems.
Redis is More Than a Cache - Data Reference
· 6 min read
Why Redis should store coordination data, not full payloads, and how we redesigned our delayed-job system around that principle.
Redis is More Than a Cache - Delaying Jobs
· 5 min read
How we used Redis sorted sets to delay and retry jobs, and why the consumption pattern matters more than the data structure.
The Zalgo Effect and Resource Leakage
· 5 min read
How mixing sync and async code in NodeJS caused RabbitMQ channel exhaustion in production, and why caching the promise instead of the result fixes it.
NodeJS 101 - Lazy Initialization
· 4 min read
Two practical patterns for async resource initialization in NodeJS, and how to choose between them.