MongoDB Rules
summary
Clear, concrete rules with runnable details: follow use ObjectIDs (12‑byte BSON id with timestamp), prefer embedded documents for carts/tags to avoid joins, and index array fields for efficient queries; use atomic update operators ($push/$inc) and findAndModify for single‑step reservations (concert seats) or vote handling; GridFS API stores files in files+chunks collections; BSON/Bon serialization and memory‑mapped files trade speed for per‑node durability so replicate; collections support up to 40 indexes and keep working set/indexes in RAM; auto‑sharding + replica sets for scale.
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chapters (11)
- 0:00Intro
- 2:24Get to know the real MongoDB
- 6:05Use rich documents
- 11:32Array keys
- 13:32Atomic operators
- 16:16MapReduce
- 17:45Indexes
- 19:08Binary Data
- 20:08Speed Durability
- 21:35Drivers
- 23:45Sharding
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