Posts

All the articles I've posted.

• 8 MIN READ•Apr 29, 2026

  The Metadata Structure of Modern Table Formats

  Iceberg uses a metadata tree, Delta Lake uses a transaction log, Hudi uses a timeline. Here is exactly how each format organizes metadata and why it matters.

  table format metadataApache Iceberg metadataDelta Lake transaction log
• 8 MIN READ•Apr 29, 2026

  Row vs. Column: How Storage Layout Shapes Everything

  Row stores keep records together for fast transactions. Column stores keep field values together for fast analytics. Here is how each layout works and when to use it.

  columnar vs row storagecolumn-oriented databaserow store performance
• 9 MIN READ•Apr 29, 2026

  What Are Table Formats and Why Were They Needed?

  Table formats like Apache Iceberg solved the ACID, schema, and performance problems that turned data lakes into data swamps. Here is how each one works.

  data lake table formatsApache IcebergDelta Lake