A content delivery network or content distribution network (CDN) is a system of computers containing copies of data placed at various nodes of a network.

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Is there a limit of emails/pictures per Gravatar account?

I'm building a site to connect patients to doctors. Each doctor will have a profile picture. I'm quite happy to manually maintain the profile pictures as there won't be that many doctors nor will they ...
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CDN change check

After I push a change to our assets origin, is there a way for me to check if this change has indeed cascaded everywhere on our CDN? I am looking at something similar to what OpenDNS Cache check does ...
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Google PageSpeed: Generating critical css for css file served from CDN

We were trying to optimise the website using google pagespeed and now having some issue: We're using nginx_pagespeed module Trying to enable the prioritize_critical_css filter Since the CSS files ...
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What is the best way to invalidate an entire Amazon CloudFront cache or recreate the entire distribution?

After asking this question, I have decided to recreate some CloudFront distributions, as so many files need to be invalidated. But instead of creating a new distribution, is it possible to just ...
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How to prime cache on all location of a cdn

I have just started using MaxCDN to serve static resources faster (images, js and css mostly). It works great, as long as the data is cached on the cdn's location that is close to where I live. But ...
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speed boost for just a subdomain

Because I'm hesitant to jump into new products for my website, I'm looking for a special free CDN that I don't know if it exists or not. I tried incapsula on my mobile site, and unfortunately, it ...
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How to design different web application environments with respect to SEO and server load?

Let's say I have a nice and valuable domain (somedomain.com) and I would like to develop a web application for this domain. I will host this web application on the cloud which I use currently for ...