# postgres_chronos

**Repository Path**: humancat/postgres_chronos

## Basic Information

- **Project Name**: postgres_chronos
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: REL_19_STABLE
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-10-17
- **Last Updated**: 2026-10-17

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at
<https://www.postgresql.org/docs/19/>.  In particular, information
about building PostgreSQL from the source code can be found at
<https://www.postgresql.org/docs/19/installation.html>.

The latest version of this software, and related software, may be
obtained at <https://www.postgresql.org/download/>.  For more information
look at our web site located at <https://www.postgresql.org/>.

Chronos database branching
==========================

This source tree implements Chronos interval-based database branching. See
[BRANCHING.md](BRANCHING.md) for setup and everyday use. See
[CHRONOS_VERSIONING.md](CHRONOS_VERSIONING.md) for the versioning algorithm and
PostgreSQL implementation details. A Docker-compatible build is described in
[docker/chronos/README.md](docker/chronos/README.md).

The [Chronos paper](https://arxiv.org/abs/2609.14889) describes the
interval-based versioning algorithm and its cross-store implementation. This
repository applies the algorithm within PostgreSQL for single-database
branching.

Cite Chronos
============

```bibtex
@misc{zhou2026chronos,
  title         = {{Chronos}: Efficient Bolt-on Branching Across Data Stores for Stateful Agentic Applications},
  author        = {Xinjing Zhou and Jason Mohoney and Samuel Madden and Michael Stonebraker and Lei Cao},
  year          = {2026},
  eprint        = {2609.14889},
  archivePrefix = {arXiv},
  primaryClass  = {cs.DB},
  url           = {https://arxiv.org/abs/2609.14889}
}
```