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Ujaval's Notes and Bookmarks

This site is a collection of my personal notes and bookmarks collected over the years. It is organized to help search and recall specific items or find notes related to a certain topic.

These notes were scattered across many places and hard to manage. Finally, Claude Code helped organize this and build this site. These are now auto-updated weekly from my notes. See the CLAUDE.md file with processing instructions.

Latest Finds

  • Ponytail: A Claude Code skill that enforces a "lazy senior developer" philosophy — a decision ladder that prioritizes using existing solutions (stdlib, native features, installed dependencies) before writing new code, demonstrating ~54% reduction in lines of code and ~20% cost savings. [Keywords: Claude Code skills agents productivity best practices code generation] — More in Claude Code
  • Pi: A minimal, extensible open-source agent harness for coding workflows supporting 15+ LLM providers, with real-time customization via TypeScript extensions, skills, and packages — designed to adapt to user needs rather than enforce predetermined workflows. [Keywords: AI agents LLM open-source TypeScript coding extensible] — More in AI
  • Optimizing DuckDB Spatial Queries: A technical deep-dive comparing spatial join performance between PostGIS and DuckDB, explaining how DuckDB's R-tree index fires only for single constant geometry comparisons while PostGIS auto-uses its GiST index — and showing that DuckDB's streaming SPATIAL_JOIN operator wins at scale when both datasets are large. [Keywords: DuckDB PostGIS spatial queries R-tree GiST spatial join performance geospatial] — More in DuckDB

Topics

Geospatial Tools

Data Science

AI & Machine Learning

Domain Applications

Other