Scaling Reads easy
In a Primary-Replica architecture, which operation is typically ONLY allowed on the Primary node?
- A Reads (SELECT)
- B Writes (INSERT, UPDATE, DELETE)
- C Backups
- D Logging
Answer: B. Writes (INSERT, UPDATE, DELETE)
To keep data consistent, we usually designate one single source of truth (Primary) for changes. These changes are then copied to the Replicas.
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