Changelog¶

v2.0.1 (2025-11-04)¶

Update README and documentation to reflect Dash app as main mode of operation.

The original Flask-based deployment with a more full-featured Dash app offering the same core functionality plus direct, interactive visualization.

Highlights:

Immediate visualization of generated dependency graphs, overview statistics, and field details
Shortest calculation path exploration between Tableau fields
Limited multi-user support by isolating session data and threading state in user-specific dictionaries instead of global variables
Safe cooperative cancellation via a Cancel button that gracefully stops background processing
Unified progress tracking for both the Dash and legacy Flask contexts
General code cleanup, bug fixes and improved structure for maintainability

Add PNG generation toggle and optimize dependency resolution

Optional PNG Generation: added a checkbox in the Flask app to let users choose whether to generate PNG files alongside SVGs. By default, only SVGs are created for faster processing.
Memoization for Dependency Resolution: replaced the previous naive recursive logic in both forward and backward dependency functions with a memoized implementation. This significantly reduces redundant calculations and improves performance (~3× faster).

Switch from Flask development server to Gunicorn

Updated Dockerfile to use Gunicorn as the web server.
Changed the CMD instruction inside Dockerfile to run Gunicorn and bind to 0.0.0.0:5000.

Initial release of the tool with support for local execution and deployment in a Dockerized environment.