CloudFront on Logan's Nest

CloudFront Anycast IP

Thu, 09 Oct 2025 00:00:00 +0000

I recently worked with a new AWS product called CloudFront Anycast IP, which costs $3,000/month. After testing it, I found the offering to be quite misleading, so I’m sharing my findings here.

CloudFront Functions with Dynamic Origin Pointing to Another CloudFront

Wed, 05 Feb 2025 00:00:00 +0000

At re:Invent 2024, CloudFront Functions introduced new features, including the ability to dynamically change the origin host.

Previously, this wasn’t possible as the Host header was read-only for CloudFront viewer requests.

Curl net performance test

Thu, 15 Dec 2016 00:00:00 +0000

Print out CloudFront X-Amz-Cf-Id when response time is slower than set threshold.

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#!/bin/bash
 
output=($(curl -I -s -w "Time: %{time_total}\n" http://cf_url.here grep -e X-Amz-Cf-Id -e Time | awk {'print $2'}))
 
id=${output[0]}
time=${output[1]}
compare=0.01
 
if (( $(echo "$time > $compare" |bc -l) )); then
 echo $time - $id >> test_results.txt
fi

Small variation (unrelated to CF)