midCaching
What is the 'Cache Aside' (Lazy Loading) pattern?
Updated Apr 28, 2026
Short answer
The application checks the cache first; on a miss, it loads data from the DB and writes it to the cache.
Deep explanation
Intermediate caching involves choosing strategies that balance speed with data accuracy. The application checks the cache first; on a miss, it loads data from the DB and writes it to the cache.
Real-world example
Using Redis to store session data across a cluster of web servers.
Common mistakes
- Using Write-Back caching for critical financial data without a robust safety net for data loss.
Follow-up questions
- What is a 304 HTTP code?