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HTAP Roadmap

This roadmap is a reader-friendly snapshot of where ApexBase is today and what the project is optimizing for next. It is intentionally high level; implementation details live in issues, tests, and engineering documents.

Current Focus

ApexBase is focused on being a fast embedded HTAP engine with:

  • Single-file table storage.
  • Rust execution core and Python-first ergonomics.
  • Analytical SQL over local data.
  • Efficient DataFrame and Arrow interoperability.
  • PostgreSQL Wire and Arrow Flight access for external tools.
  • Full-text search and vector search as built-in capabilities.

Implemented Foundations

Area Status
Columnar storage V4 row-group storage with .apex table files
Python API ApexClient, ResultView, DataFrame import/export
SQL DDL, DML, joins, CTEs, subqueries, windows, set operations
Multi-database Named databases and database.table SQL references
Transactions BEGIN / COMMIT / ROLLBACK, savepoints, optimistic concurrency
Indexing B-Tree and Hash indexes
Full-text search SQL-native FTS index management and MATCH() predicates
Vector search TopK distance APIs and SQL integration
Protocols PostgreSQL Wire and Arrow Flight servers
Rust embedding Native Rust API for embedded use

Near-Term Documentation Goals

  • Keep the first-run path short and accurate.
  • Split user-facing concepts from API reference material.
  • Add focused guides for SQL, import paths, and protocol deployment.
  • Keep contributor notes separate from application-user documentation.
  • Build and publish docs automatically through GitHub Pages.

Product Direction

Theme Direction
Embedded reliability Keep local persistence predictable and easy to reason about
Query performance Preserve fast paths for common analytical and point lookup patterns
Interoperability Make Arrow, Pandas, Polars, PostgreSQL clients, and Rust all feel native
Operational simplicity Keep the default mode serverless while offering protocol servers when needed
Specialized search Continue integrating structured SQL with text and vector search

Contributor Entry Points