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What is lsyncd? Lsyncd is a way to keep your local directory automatically synchronized with other machines. Files on the local machine are monitored for changes every few seconds and if any changes are noted, they then get replicated and…

What is an SSH key? SSH keys are an easy and secure way for computers to identify themselves when trying to establish a connection to a third party. Using SSH is more secure than just using a password alone as passwords need to be sent over a network…

What is HTTP Live Streaming? HTTP Live Streaming, also known as HLS, is a technology used for streaming live and on demand content using the HTTP protocol. HLS is adaptive in that it determines the optimal playlist to deliver to a client based on…

What is a traceroute command? When data is sent over the Internet, it is sent in small pieces of data called packets. The data is broken up into multiple small packets before it is sent and once all packets reach their destination, the original…

What is Varnish® Cache? Varnish® Cache is an open source, frontend accelerator also known as a caching HTTP reverse proxy. Varnish® can be used to cache both dynamic and static content and has shown to dramatically increase website speed and server…

KeyCDN offers free a Custom SSL. Check out the difference between Shared SSL and Custom SSL here. A certificate is required for Custom SSL. This guide shows how to order an SSL certificate. Once the certificate is ordered, it can be uploaded to the…

There are different options for managing multiple websites with KeyCDN. In this article we're highlighting the two common approaches. Option 1 - Using one Zone per website The standard setup is one Zone per website. Each Zone will have its own URL…

Rsyslog is a rocket-fast system for log processing and is commonly used for any kind of system logging. We use a Ubuntu server 20.04 LTS distribution to show you how to configure your own syslog server to receive your CDN logs in real time. Syslog…

This tutorial explains how to setup a CNAME in Cloudflare that can be used with KeyCDN by completing the following steps: Create a Zone Alias in the KeyCDN dashboard. If you need HTTPS, enable Custom SSL and upload the certificate. Log in to…

This guide shows how to setup a custom SSL. If you're not familiar with Custom SSL (and the difference to Shared SSL), check out this guide. Here are the steps needed: Log in to the KeyCDN dashboard. Create a Zone Alias for the subdomain that the…