Mouse moves are submitted to an AWS SQS Queue
Use the grey canvas on the left to draw a shape with the mouse while you hold down the left mouse button.
As you draw, messages will be sent to an SQS containing information about the X & Y coordinates of the mouse. These messages will be received by the browser polling the same SQS queue, and rendered on the right-hand canvas.
There will be some latency between the send and receive times of messages between the left and right canvases. This information will be shown in the statistics panels.
Notice how the points are drawn in the order that your mouse moved while drawing on the left canvas?
This is a characteristic of SQS FIFO mode - first in, first out messaging.
Events read from Queue and plotted on canvas