beginner~4h
MongoDB — Indexing, Replica Sets & Sharding
Advanced MongoDB topics that differentiate production-grade implementations from beginner ones.
Learning objectives
- Apply the same indexing intuition from SQL B-tree indexes to MongoDB's compound indexes and the ESR rule.
- Explain what a replica set's primary/secondary roles are, and what happens during a failover.
- Distinguish MongoDB's sharding (with a shard key) from vertical scaling, and identify a poor shard key choice.
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MongoDB — Indexing, Replica Sets & Sharding