DuckLake in Python: The DuckDB Lakehouse Format (2026)
DuckLake 1.0 keeps table metadata in a real SQL database and data as Parquet on S3. A practical Python guide covering pyducklake, time travel, deployment, and where it beats Iceberg.
Articles by Tomás Oliveira
FastAPI Streaming in 2026: SSE, WebSockets, and NDJSON for LLM and ML APIs
A hands-on guide to FastAPI streaming in 2026 using native SSE, WebSockets, and NDJSON. Real production patterns for LLM APIs: disconnects, heartbeats, Nginx and Cloudflare buffering, and testing with httpx and k6.
Docling in Python: A Practical 2026 Guide to Parsing PDFs, DOCX, and HTML for RAG
IBM's open-source Docling library turns PDFs, DOCX, PPTX, XLSX, and HTML into clean Markdown or JSON for RAG. This 2026 guide covers install, table extraction, HybridChunker, LangChain and LlamaIndex integrations, plus how it stacks up to Unstructured and LlamaParse.
Structured LLM Outputs in Python: Instructor vs Outlines vs Pydantic AI (2026)
Instructor, Outlines, and Pydantic AI each solve structured LLM outputs a different way. Here is how to choose in 2026, with working code and FastAPI patterns.
PyIceberg in Python: A Practical Guide to Apache Iceberg Tables (2026)
PyIceberg 0.9 makes Apache Iceberg tables fully usable from pure Python. Walk through catalog setup, reads, appends, upserts, schema evolution, and time travel, plus how PyIceberg compares with Spark, Delta Lake, and Hudi for 2026 lakehouse work.
Async ETL in Python: httpx + asyncio to Pandas DataFrames (2026)
Build async ETL pipelines in Python using httpx and asyncio.TaskGroup with Pydantic V2 validation. Working code, retry policy, rate-limit handling, and the pitfalls that bite in production.