https://github.com/nowayhecodes/postgres-datastream-sample

A sample on how to perform data streaming through PostgreSQL
https://github.com/nowayhecodes/postgres-datastream-sample

Last synced: 11 months ago
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A sample on how to perform data streaming through PostgreSQL

• Host: GitHub
• URL: https://github.com/nowayhecodes/postgres-datastream-sample
• Owner: nowayhecodes
• Created: 2023-08-05T21:22:47.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-08-05T21:52:24.000Z (almost 3 years ago)
• Last Synced: 2025-07-02T01:40:34.143Z (about 1 year ago)
• Language: Python
• Size: 46.9 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# postgres-datastream-sample 

This repo shows a sample on how to perform data streaming with PostgreSQL.

Create a trigger function using the `pg_notify()` function. 

Them create another trigger to call the first one everytime an insertion on the messages table occurs.

Using the PostgreSQL `LISTEN` function in the psql terminal we can get an output like this: 

![](https://github.com/nowayhecodes/postgres-datastream-sample/blob/main/screens/psql.png "psql screenshot")

Then running the `listen.py` file: 

![](https://github.com/nowayhecodes/postgres-datastream-sample/blob/main/screens/terminal.png "terminal screenshot")

And then, running the `main.py` file (which is a flask app) in another terminal, then calling `http://127.0.0.1/message/1` on Postman: 

![](https://github.com/nowayhecodes/postgres-datastream-sample/blob/main/screens/postman.png "postman screenshot")

This way we can do SSE to our frontends, or other integrations with message queues and stuff.