Rest API - Caching Strategies
You want to reduce server load by caching REST API responses but also ensure data freshness. Which strategy best balances these needs?
You want to reduce server load by caching REST API responses but also ensure data freshness. Which strategy best balances these needs?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand caching and freshness tradeoff
Short cache expiration limits stale data time. Conditional requests with ETag let server confirm if data changed before sending full response.Step 2: Evaluate other options
Disabling caching increases load. Indefinite caching causes stale data. Caching only errors doesn't reduce load effectively.Final Answer:
Set a short cache expiration and use conditional requests with ETag headers -> Option BQuick Check:
Short cache + ETag = freshness + load reduction = C [OK]
Quick Trick: Use short cache and ETag for freshness and efficiency [OK]
Common Mistakes:
MISTAKES- Disabling caching to fix freshness
- Caching forever without validation
- Caching only error responses
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