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Open Source Articles

Our open source contributions to DuckDB, DataFusion, and dbt. Practical guides on reading codebases, writing tests, and getting patches merged.

Pruning Top-N Queries
FEBRUARY 3RD, 2026
Sylvain Utard

Pruning Top-N Queries

Open Source, Performance, Architecture

A deep dive into DuckLake PR #668 and how Top-N dynamic filter pruning turns ORDER BY + LIMIT from full scans into metadata-driven execution.

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From STDIO to OAuth
OCTOBER 21ST, 2025
Sylvain Utard

From STDIO to OAuth

Engineering, Open Source

How MCP evolved from local stdio to OAuth 2.0 for cloud-scale AI, using Dynamic Client Registration for secure agent access.

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Upstreaming with AI
SEPTEMBER 23RD, 2025
Sylvain Utard

Upstreaming with AI

Open Source, Engineering, AI Agents

How we contributed 17 upstream PRs in 90 days—where AI accelerated our workflow, what we learned, and practical tips for open source success with AI assistance.

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