775 tutorials · free to read

A working handbook for data and software engineering.

Hands-on tutorials by Alex Merced on Apache Iceberg, the data lakehouse, pipelines, agentic AI, and the languages and tools that hold it all together.

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  1. 01Zero-Copy Warehouse Modernization: Migrating Legacy Databases to Apache Iceberg Without DowntimeMove a legacy warehouse to Iceberg without downtime by virtualizing first. Consumer cutover, parity checks, and background copy without double-ETL.
  2. 02The Agent Is Now a Named Coworker, and It Needs a File FormatNamed, persistent agents need a file format. Open Agent Profile, Buzz, Grok Bot, and Hermes Bot Mode show why a portable agent identity matters.
  3. 03Graphs in AI Engineering Have Solved Three Problems. The Fourth Is the Plan.Knowledge graphs, GraphRAG, and LangGraph solved three problems. The fourth is the work itself: a reviewable graph of bounded agentic loops.
  4. 04Your Agent Should Answer the Phone: A Field Guide to AI Gateways on Slack, Discord, Telegram, Signal, and TeamsA field guide to AI gateways on Slack, Discord, Telegram, Signal, and Teams: architecture, auth, cost, and the failure modes that matter.
  5. 05The Hidden Cost of Tiny Iceberg CommitsTrace what one tiny Iceberg commit writes, then model hourly, per-minute, and per-second cadences so streaming costs become arithmetic, not adjectives.
  6. 06Deletion Vectors vs Position Deletes vs Equality Deletes: The Iceberg Delete Story in 2026Position deletes, equality deletes, and deletion vectors compared from the Iceberg spec: what each writes, how readers apply it, and when to use which.