DynamoDB - Backup and Recovery
You want to design a Global Table for a worldwide app with users in Asia, Europe, and America. Which strategy best reduces latency and ensures data consistency?
You want to design a Global Table for a worldwide app with users in Asia, Europe, and America. Which strategy best reduces latency and ensures data consistency?
hard🚀 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Consider latency and availability
Replicas in all user regions reduce latency by serving data locally.Step 2: Understand consistency trade-offs
Strongly consistent reads across regions are not supported; eventual consistency is used to balance latency and consistency.Step 3: Evaluate options
Create replicas in Asia, Europe, and America regions with eventual consistency reads creates replicas in all needed regions with eventual consistency, which is best for performance and availability.Final Answer:
Create replicas in Asia, Europe, and America regions with eventual consistency reads -> Option DQuick Check:
Global Tables + eventual consistency = low latency worldwide [OK]
Quick Trick: Use replicas in all regions with eventual consistency [OK]
Common Mistakes:
MISTAKES- Expecting strong consistency across regions
- Using single region causing high latency
- Skipping regions to save cost but hurting users
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