Causality Lab is a system design simulator that runs in your browser.
Connect clients, load balancers, servers, caches, queues, and databases, then watch requests flow through your system in real time
Also break things on purpose: turn off a server, slow down a database, and see what happens.
Then click on a failed request to understand where it traveled, node by node with visualizer also built in.
It's still a simplified model.
No signup required, try this and i'd love to hear your feedback!
