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MongoDB Learning Roadmap

Document database operations — from CRUD to sharded, highly available clusters.

Estimated time:4–6 weeks

1🌱

Phase 1 — Fundamentals

Documents, collections, BSON

CRUD operations

Schema design (embedding vs referencing)

Indexes basics

2🔍

Aggregation pipeline

Query plans & explain()

Compound & multikey indexes

Connection pooling

3🛡️

Replica sets & failover

Write/read concerns

Oplog & replication lag

Backups (mongodump, snapshots)

4📈

important

Sharding & shard key selection

Operational troubleshooting (slow queries, locks)

Security (RBAC, encryption at rest)

Begin with interview questions to assess your current level.