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Thoughts & technical notes

Lessons from building systems in production. Event-driven architecture, AWS patterns, Go, and engineering culture.

Lambda Concurrency with SQS: The Gotchas Nobody Warns You About

Practical lessons from running SQS-triggered Lambda functions in production — batch sizes, MaximumConcurrency, reserved concurrency, and the failure modes that catch teams off guard.

25 Mar 2026·3 min read
AWS
Lambda
SQS
Event-Driven

Building a Go CLI as a TypeScript Engineer

What I learned building dlqctl — a dead-letter queue manager — as my first serious Go project, coming from years of TypeScript and Node.js.

10 Mar 2026·4 min read
Go
TypeScript
CLI
Developer Tooling
© 2026 Ahmad SaleemBuilt with intent