The document database past the hype: the embed-versus-reference decision that makes or breaks a schema, denormalization that does not rot, when MongoDB genuinely beats Postgres JSONB and when it does not, the aggregation pipeline, indexing and the working-set rule, replica sets and sharding, the read/write-concern consistency knobs, and the operational footguns — unbounded arrays and the 16 MB BSON limit — that sink naive designs.
Mongodb
-
MongoDB Done Right