What is the name of the domain?
https://aurora-alerts.uk
What is the issue you’re encountering
Requests the site makes to its APIs via ajax have a delay of 5, 10 or 15 seconds applied. A test page I made has a 15s delay added every approximate 1 in 10 requests.
What steps have you taken to resolve the issue?
I made a test page at https://aurora-alerts.uk/test-flot.php. If I repeatedly hit ctrl-f5 in the browser, it normally serves the page in < 200ms. However, every so often it will have a 10 or 15 second delay added.
My live site at https://aurora-alerts.uk/ makes several API calls by ajax every few minutes to refresh the display, some specific API calls always have a 5s delay, others 10s delay and others 15s delay. Using a domain pointed directly at the server, no delays are ever applied.
What are the steps to reproduce the issue?
I made a test page at https://aurora-alerts.uk/test-flot.php. If I repeatedly hit ctrl-f5 in the browser, it normally serves the page in < 200ms. However, every so often it will have a 10 or 15 second delay added.
Also, visit https://aurora-alerts.uk/ and watch the network traffic in developer tools. All requests should take a few hundred milliseconds but some requests have a 5 or 10 second delay applied.