Comparison of geospatial support for mongodb and postgis

Question

I am in the process of creating a consumer facing location based mobile app that will heavily need GIS support. I have narrowed down the databases to Postgres (PostGIS) and mongodb.

I was wondering how someone who has experience with both would rate the geospatial support particularly in the area of:

1. Performance
2. Query expressibility
3. Precision

Please discuss pro and cons, gotchas and limitations.

Answer 1

I could find only a single page of documentation on geospatial queries for mongodb. There are books written about postgis.

If you "heavily need GIS support", then go with postgis - it's a well established and supported solution that's in production in many shops (including mine).