# Writing

- [Bringing Multi-Column B-Trees to Columnar Storage](https://catalyzed.ai/blog/bringing-multi-column-btrees-to-columnar-storage/) - 2025-12-14. Compound scalar indices for Lance and multi-predicate query patterns.
- [Extending Apache DataFusion: Custom Table Providers and Physical Optimizers](https://catalyzed.ai/blog/extending-datafusion-custom-table-providers-physical-optimizers/) - 2025-11-30. Custom data source integrations and optimizer rules in DataFusion.
- [Basics and Advanced Temporal Design Patterns](/posts/temporal-design-patterns/) - 2024. Notes on workflow orchestration patterns and common Temporal constraints.
- [Speeding up GitLab Dependency Caching](/posts/gitlab-dependency-caching/) - 2024. A practical CI caching trick for large JavaScript monorepos.
- [Two Years of Lessons with a TypeScript Monorepo](/posts/two-years-of-typescript/) - 2023. Repository structure, build pipelines, package boundaries, and developer experience.