Direct answer
What is Caching?
- Short definition
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Caching stores frequently accessed data temporarily in fast storage (like Redis or memory) to reduce database load and improve response times.
- Why it matters
- Proper caching can reduce page load times from seconds to milliseconds while dramatically reducing server resource usage.
How teams use Caching
Use this term when you need to describe the practical role it plays in a software project.
Common use cases
- Reducing database queries for slow-changing data
- Storing API responses to avoid repeated external calls
- Speeding up expensive calculations
- Improving user experience with faster page loads
Examples of Caching
These examples show the term in everyday product, platform, or operations work.
Real-world examples
- Caching the menu for 1 hour instead of querying it on every page load
- Storing third-party API responses for 5 minutes
- Cache warming on deployment for instant fast loads