Reqflow: system design you can run

Reqflow/Rebuild from memory·WhatsApp

Components

Client

CDN

Load Balancer

API Gateway

Service

Cache (Redis)

Database

Queue (Kafka)

Search

Object Storage

External API

· Drag components onto the canvas.

· Connect by dragging from a node edge to another.

· Click Score me to compare against the canonical.

Press enter or space to select a node.You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.

Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.

Persistent connections, message queues, delivery.

Drag components from the left to start.

Goal

Rebuild WhatsApp from memory.

Drop the components you think this system needs, connect them how requests would actually flow, then hit Score me.

You won't be graded on exact labels. The score is based on whether you got the right kinds of components and the right connections between them.