The recent effective delivery bandwidth of the connection towards the client in bytes per second. This gives a reasonable estimate of current connection performance by excluding periods when the connection was idle due to lack of application data to send.
Try it out
client.socket.tcpi_delivery_rate is used in the following solution recipes, which show real world use cases. Click RUN to provision a Fastly service, execute the code on Fastly, and see how the function behaves.
Fastly offers a myriad of different variables that you can log. See and test a large collection here.
User contributed notes
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