Performance Testing Basics
Check speed, load, and stress before users feel pain.
What you'll learn
- Know the main speed terms.
- Test with more users.
- Find slow spots and limits.
Manual QAlessonsJump to another lesson
Performance Testing Basics
Check speed, load, and stress before users feel pain.
Big Picture
One small picture can make this idea easier to hold.
Empty road
- Few cars.
- Fast movement.
- Low pressure.
- Easy to drive.
Rush hour
- Many cars.
- Slow movement.
- High pressure.
- Bottlenecks appear.
VerdictThe app must survive rush hour, not just quiet time.
How It Moves
Short steps make the flow easier to see.
Pick target
Choose the speed goal.
Add load
Send more users or requests.
Watch time
Check response and delay.
Find limit
See where it starts to slow down.
Step By Step
This is the same idea, stretched across time.
- 1
Baseline taken
The team checks the normal speed.
- 2
Load increased
More users are added.
- 3
Slow point seen
The app starts to lag.
- 4
Fix tested
The team checks if the fix helped.
One Small Model
Think of this like a tiny card you can keep in your pocket.
Load graph
5 fieldsQuick Check
What does performance testing measure?
Map It
One more picture helps you see where this lesson matters most.
Load vs response time
Few users, fast
Normal app use
Many users, fast
Healthy scaling
Few users, slow
Bad code path
Many users, slow
Peak traffic lag