Technical Insights & Architecture Papers
Deep-dives on high-throughput backend architecture, Python & Django performance, real-time Voice AI, and resilient database modeling.
Taming the Node.js Event Loop Under Heavy I/O: Diagnosing Lag, Worker Threads & Libuv Sizing
While Node.js excels at asynchronous I/O, CPU-intensive micro-tasks silently starve the event loop, spiking p99 response latencies. Learn how to instrument event loop delay, tune libuv threadpools, and orchestrate dedicated worker thread pools.
Zero-Public SSH: Hardening Cloud VPS Access with WireGuard Mesh Networks & UFW
Exposing SSH port 22 invites thousands of automated brute-force attacks daily. Discover how to bind sshd exclusively to an internal WireGuard mesh network and lock down public firewall rules with UFW.
The Transactional Outbox Pattern: Eliminating Dual-Write Inconsistencies in Distributed Systems
Writing to a SQL database and publishing an event to RabbitMQ/Kafka in the same request causes state divergence. Discover how to implement the Transactional Outbox pattern with guaranteed at-least-once delivery.
Distributed Locking in Practice: Redis Redlock vs. PostgreSQL Advisory Locks
Mutual exclusion across distributed worker nodes is essential for billing jobs and inventory syncs. Compare the operational guarantees of Redis Redlock against PostgreSQL transaction-scoped advisory locks.
Pragmatic Production Observability: Structured JSON Logging & OpenTelemetry on Linux
SaaS logging platforms hit growing startups with exorbitant monthly bills, while unstructured text log files are impossible to trace across requests. Discover how to configure structured JSON logging and OpenTelemetry on a custom Linux VPS.
Distributed Rate Limiting: Token Bucket vs. Sliding Window Counter in Redis
Simple fixed-window rate limiters permit double the allowed traffic bursts at window boundaries, leading to API quota exhaustion and backend overload. Explore the mathematics and atomic Redis Lua implementation of Sliding Window rate limiting.