Things it has drawn

A flowchart: a Start stadium leads down to a diamond reading "Cache hit?", which branches
right to "Serve cached" and down to "Fetch upstream", both of which lead to an End stadium.

Decision flow

Diamonds, stadiums and labelled branches. The `--label` on a connector is what makes a flowchart readable.

What produced it

diagram-builder -f flow.svg add shape stadium "Start" --x 90 --y 90 --fill green
diagram-builder -f flow.svg add shape diamond "Cache hit?" --below sta1 --gap 70 --fill amber
diagram-builder -f flow.svg add shape rect "Serve cached" --right-of dia1 --gap 110 --fill teal
diagram-builder -f flow.svg add shape rect "Fetch upstream" --below dia1 --gap 80 --fill blue
diagram-builder -f flow.svg connect dia1 rect1 --label "yes"
diagram-builder -f flow.svg connect dia1 rect2 --label "no"