System Builder
Learn by building: 620 designs to start from, seven guided builds, designs shared by learners, and a free canvas. Run traffic, break things, see what gives way first.
Click a part to add it to the canvas. Select a part on the canvas first and the new one is connected after it. To remove one, select it and press Delete.
Front door
Compute
Data
Messaging and resilience
Outside services
Failed
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Slowest 5%
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Uptime
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Cost / month
$0
illustrative
- Draw an arrow from Users to the first part of your system.
Start drawing
Double-click anywhere, or press Q, and type a part name. Or press A and drag parts from the list. Select a part first and the next one connects after it; drag from the white dot to connect two parts.
Or start from a design
healthy busy overloaded idle · the number on each part is how full it is
A simplified model for building intuition: it shows which part gives way first, not your production numbers.