Normal access0.0 / 32s
Circle = normal requestSquare = attack request
Queued 0 / 10Normal responses 0Normal rejected 0
Normal requests are processed promptly.
Illustrative model · FIFOSame attack volume · Fixed capacity
Circle = normal requestSquare = attack request
Normal access
Capacity exceeds incoming load
Attack traffic
Overload → Less availability
After the attack
Drain the queue → Recover
Illustrative numbers, not measurementsEqual cost per requestAvailability = usable when needed