Problems / LLM serving, easy
An image generator takes 4 seconds per image on 40 slots. Users request 15 images a second.
Free to open. Runs in your browser, no sign-up.
Success ≥ 99%, p99 ≤ 5 s.
15 requests a second for 30 seconds: 100% request (reads).
What each component does in this design, and what calls it. The simulator mimics each one from these settings.
| Component | Its job here | Settings |
|---|---|---|
| Load balancerLoad balancer | Traffic enters here.Calls AI app.Layer 4 balancers route by IP and port; layer 7 balancers read HTTP and can route by path or header. | – |
| AI appApp service | Load balancer forwards to it.Calls Image model.Little's law: throughput ≈ concurrency ÷ latency. 200 slots at 50 ms serve about 4,000 req/s. | 3 replicas × 500 slots · timeout 30 s |
| Image modelImage generation model | AI app calls it.Image generation takes seconds per image and runs on GPUs. | 40 slots |
Try it first. Open one hint at a time if you get stuck.
40 slots ÷ 4 s = 10 images a second.
Work out demand: requests a second × seconds each = slots or streams needed. Compare it with what the red component can hold.
Add image-model capacity.