Tanzim Romel

Notes

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Technical notes on software engineering, distributed systems, agent tooling, and what I learn while building.

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Building a fast 1BRC solver in C# on Apple Silicon

performance-engineering, dotnet, systems

This is a long write-up about building a C# solver for the One Billion Row Challenge on Apple Silicon. I am going to start from the boring version, explain why it falls apart, then rebuild the system one layer at a time.

csharpdotnetnativeaot1brcperformancearm64

Memory Management in Production: Avoiding the Silent Killers

backend-engineering, performance, memory-management

It’s 2:47 AM when the alerts start flooding in. Your e-commerce platform - handling Black Friday traffic - begins throwing OutOfMemoryErrors. Orders are failing, customers are abandoning carts, and your revenue is hemorrhaging by the minute. The CPU usage looks normal, disk I/O is fine, but something is silently consuming...

memory-managementdotnetgarbage-collectiondockerperformance-optimizationproduction-debugging