Rest API - Caching Strategies
A developer added caching to their REST API but notices stale data is served too long. What is the likely cause?
A developer added caching to their REST API but notices stale data is served too long. What is the likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Identify stale data cause
If cached data stays too long, it means the cache expiration or max-age is set too high, so data is not refreshed often.Step 2: Check other options
Cache disabled means no caching, so no stale data. Server not processing or client not sending requests would cause no responses, not stale data.Final Answer:
Cache expiration time is set too high -> Option CQuick Check:
Long cache time = stale data = B [OK]
Quick Trick: Long cache expiration causes stale data [OK]
Common Mistakes:
MISTAKES- Assuming cache is off when stale data appears
- Blaming server or client inactivity
- Ignoring cache expiration settings
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