Free
5h · 5 lessons
Overview
Relational modelling, indexes, transactions, the NoSQL families and what each one is actually for, then replication and sharding. More interviews are lost on the storage layer than on any other part of the diagram.
This module is 02.5 of the 6 in Data Storage & Retrieval. It runs about 5 hours across 5 lessons, and closes with Quorum — Tune R, W and N against a failure schedule. Read a stale value and the round ends.
Lessons
1. Single-leader replication and read replicas
Concept · 40 minutes
2. Replication lag and read-your-writes
Concept · 35 minutes
3. Multi-leader and conflict resolution
Concept · 40 minutes
4. Leaderless quorums: R + W > N
Concept · 40 minutes
5. Failover, and how it loses data
Concept · 35 minutes
Module information
Duration
5 hours
Lessons
5
Level
Beginner
Track
Data Storage & Retrieval
Drill
Quorum
Price
Free
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