[Eridrus]

In technology, it's often the cost of re-integrating with something else. MongoDB makes this lock in ever better because it's API isn't SQL, so getting off is even harder than usual.

[gaius]

It's pretty easy to use the Mongo protocol to talk to Postgres, and Postgres JSONB beats Mongo BSON hands down

[empthought]

Cue gratuitous protocol changes from MongoDB.