[mukundmr]

The pricing of hosted MongoDB solutions is high especially as volumes increase. The last I checked, disk space doesn't free up when you drop documents or collections and that adds to hosted cost unless you find time to fix the issue through manual intervention. This costing is moving us away from MongoDB in the future.

[TimFogarty]

MongoDB will reuse free space when documents or collections are deleted (even though the storageSize stat will remain the same). You can compact the database to release free space to the OS. You can read more about how MongoDB's WiredTiger storage engine reclaims space here: https://docs.mongodb.com/manual/faq/storage/#how-do-i-reclai...

I work for MongoDB so if you have any questions about storage, feel free to reach out.