Monitoring & Alerting · AuditJet Glossary
Capacity Testing
Load testing that determines the maximum number of concurrent users a website can handle before performance degrades below acceptable thresholds.
Capacity testing simulates escalating numbers of concurrent users and measures how response times and error rates change at each level. This is critical for ecommerce sites before sales events and for SaaS companies expecting growth spikes.
Related terms
A type of performance testing that simulates real-world user load to assess system behaviour under expected and peak traffic conditions.
The 95th percentile response time — meaning 95% of requests complete faster than this value.
The time from when a browser requests a page until the first byte of the server's response is received.
A degradation in website performance metrics compared to a previous measurement — typically caused by a code deployment, content update, or third-party change.
Frequently asked questions
What is Capacity Testing?
Load testing that determines the maximum number of concurrent users a website can handle before performance degrades below acceptable thresholds.
How does AuditJet measure Capacity Testing?
AuditJet runs automated Google Lighthouse audits that surface Capacity Testing scores alongside actionable fix guidance. You can track Capacity Testing trends across all your pages and receive alerts when the metric regresses.
Monitor Capacity continuously
AuditJet tracks Core Web Vitals on a schedule with revenue impact alerts — powered by Google Lighthouse and Google PageSpeed Insights.
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