696 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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Latest tutorials
Page 55 of 116- 01Partition and Organize Data for PerformanceA table with 500 million rows takes 45 seconds to query. After partitioning it by date, the same query : filtering on a single day, returns in 2 seconds...Data EngineeringFeb 19, 2026
- 02Testing Data Pipelines: What to Validate and WhenAsk an application developer how they test their code and they'll describe unit tests, integration tests, CI/CD pipelines, and coverage metrics. Ask a data e...Data EngineeringFeb 19, 2026
- 03Pipeline Observability: Know When Things BreakAn analyst messages you on Slack - The revenue numbers look wrong. Is the pipeline broken? You check the orchestrator - all green. You check the target table...Data EngineeringFeb 19, 2026
- 04Data Engineering Best Practices: The Complete ChecklistBest practices documents are easy to write and hard to use. They list principles without context, advice without prioritization, and rules without explaining...Data EngineeringFeb 19, 2026
- 05What Is Data Modeling? A Complete GuideEvery database, data warehouse, and data lakehouse starts with the same question: how should this data be organized? Data modeling answers that question by c...Data ModelingFeb 19, 2026
- 06Conceptual, Logical, and Physical Data Models ExplainedMost data teams jump straight from a stakeholder request to creating database tables. They skip the planning steps that prevent misalignment, redundancy, and...Data ModelingFeb 19, 2026