Kartikay Dubey's Blog

A hands-on Go pprof tutorial: every command, every output, and every line of annotated source code from optimizing a real terminal log viewer.

A complete guide to installing Boost in any C++ project.

Duplicate detection looks like a solved problem: use a hash set.

std::unordered_set looks like O(1), but in hot C++ loops the memory access pattern can dominate.

A dev log about implementing a Vamana-style ANN index from the DiskANN paper, why my first version was slower than brute force, and what it taught me about reading algorithms with implementation in mind.

A performance story from sembed-engine: the search visited the same number of nodes and returned the same answers, but became much faster by changing what the CPU had to do for every distance calculation.

I recently looked into my blog’s performance and was surprised to find my pages were downloading over 3.6 MB of JavaScript and render-blocking CSS on every load.

Diagnose a Kafka throughput drop after v3.9.0.

Learn what vector databases are, how semantic search works, and why ANN, DiskANN, and Vamana matter for modern retrieval systems.

Set up dual GPU gaming laptops in Hyprland with the right iGPU priority, video decoding configuration, and battery-saving GPU switching.

Understand procedural generation in No Man’s Sky, from Perlin noise to layering and domain warping for massive game worlds.