Ramp-up Period
// Definition
The duration over which virtual users gradually start hitting the system at the beginning of a load test. A short ramp-up can mimic a flash crowd; a longer one models steady traffic growth.
// Related terms
Load Testing
Verifying system behaviour under expected production load. Confirms the application meets performance targets at typical concurrent-user counts before release.
Spike Testing
Subjecting the system to sudden, sharp load increases to verify it can absorb traffic surges (flash sales, news mentions) without collapsing or losing data.
Concurrent Users
The number of users actively interacting with the system at the same moment. A primary input to load and stress test design.
Learn more · Performance Testing with K6
Chapter 2 · Lesson 4: Stages — Ramping Up and Down