CDC Aggregations pattern

Small demo app to demonstrate the CDC pattern for serving aggregated data.

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Technologies used

Web app

• Python back-end: FastAPI server
• Front-end: htmx + Tailwind

Infrastructure:

• PostgreSQL
• Debezium
• Apache Pulsar
• Docker Compose

Getting started

Installing mise is recommended but not required.

With mise:

docker compose up -d
mise run server
mise run worker

Without:

docker compose up -d
uv run -- uvicorn aggregations.webapp.app:app --reload
uv run -- python -m aggregations.aggregator.worker

A git hook is also provided to ensure committed code is well formatted and checked, it can be installed with mise run hooks or by copying the files in the hooks directory to .git/hooks.