And with PostgREST [0], you can automatically convert any PostGIS table (with geometry or geography column) to GeoJSON by using an "Accept: application/geo+json" header in the request.

[0] https://docs.postgrest.org/en/v14/how-tos/working-with-postg...

Also https://github.com/timescale/timescaledb

I've found it very useful for storing geospatial data over time.