Software engineering insights, system design discussions, and practical development knowledge from building modern full-stack and backend systems.
I write about architecture decisions, APIs, backend design, and real-world tradeoffs in software development.
Software Engineering
A real-world engineering lesson about technology selection, cross-platform development, and why validating the riskiest assumptions early can prevent major project blockers.
By Ishan Wickremasuriya
Published 2026-08-16 • 8 min read
PostgreSQL
Learn why PostgreSQL connection strings can fail when passwords contain special characters, how to safely URL-encode credentials, and when to use separate database connection parameters with Node.js, pg, and Drizzle ORM.
By Ishan Wickremasuriya
Published 2026-08-11 • 9 min read
Node.js
The final part of the event loop series: scaling Node.js beyond a single process with Cluster, Child Processes, message queues, background jobs, and distributed processing — and an honest look at when Node.js isn't the right tool at all.
By Ishan Wickremasuriya
Published 2026-06-20 • 16 min read
Node.js
A practical guide to measuring and fixing event loop performance in production Node.js applications: event loop lag, monitoring, profiling, Worker Threads, streams, backpressure, batching, and queue-based architecture.
By Ishan Wickremasuriya
Published 2026-06-19 • 15 min read
Node.js
A practical guide to the patterns that quietly block the Node.js event loop in production: CPU-heavy operations, synchronous APIs, JSON processing, regular expression traps, large loops, memory pressure, and the async patterns that fix them.
By Ishan Wickremasuriya
Published 2026-06-18 • 14 min read
Node.js
A deep technical explanation of the Node.js event loop, how asynchronous execution works internally, how libuv manages operations, and how understanding runtime behavior helps engineers build high-performance and scalable backend systems.
By Ishan Wickremasuriya
Published 2026-06-16 • 16 min read
Node.js
A production incident that initially appeared to be a memory leak turned out to be a logging and I/O backpressure problem. This article explores how excessive console logging affected memory usage, event loop responsiveness, and overall system stability in a Node.js application.
By Ishan Wickremasuriya
Published 2026-06-13 • 9 min read
Engineering
After more than 13 years in software development, I started this blog to document engineering lessons, architectural decisions, technical tradeoffs, and practical insights gained from building real-world systems.
By Ishan Wickremasuriya
Published 2026-06-10 • 5 min read
