Debugging CDNs: A Need for Change

It’s a Saturday afternoon: An email from a customer drove me to start troubleshooting an issue they were experiencing with Amazon S3. They were experiencing random high wait time, usually an indication of a problem with communication back to some sort of an origin system. Should’ve been a piece of…

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CDN Caching Caution

Cash may be king in the real world, but cache is king in the world of the internet. From DNS record TTLs, to HTTP Max-age headers, caching at different levels makes the internet faster and our lives easier. One technology which has contributed extensively over the years in improving web performance is…

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