Direct answer
What is Performance?
- Short definition
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Performance describes how quickly and reliably an application responds to users, processes background work, loads pages, queries data, and handles traffic under real conditions.
- Why it matters
- Performance affects conversion, user trust, infrastructure cost, SEO, and whether a system can keep up as more people use it.
How teams use Performance
Use this term when you need to describe the practical role it plays in a software project.
Common use cases
- Speeding up slow dashboards and reports
- Reducing database query time and server load
- Adding caching with Redis or application cache layers
- Improving Core Web Vitals and mobile load time
Examples of Performance
These examples show the term in everyday product, platform, or operations work.
Real-world examples
- Caching expensive report queries in Redis
- Moving long-running imports into queue jobs
- Optimizing database indexes for a high-traffic dashboard