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Find answers, guides, and tutorials to supercharge your content delivery.

Check If CDN Is Working

Learning how to check if your CDN is properly installed and working can save you time and reassure you that the integration process was successful. Doing so is a straightforward process and doesn't take much in terms of tools or time. This guide will…

CDN Error Codes

Error pages will not be cached, therefore only 200, 301, and 302 responses will be cached. KeyCDNs error pages show either a black or blue error code font color. All other error pages are coming from your origin server. 400 Bad Request In most of the…

CDN Troubleshooting Guide

This guide provides a list of troubleshooting suggestions for issues that you may experience when configuring a CDN. Troubleshooting tools KeyCDN Tools offers many tools, such as a DNS check (dig), HTTP header verification, and more. KeyCDN full…

Technical Questions

This section is focusing on technical questions on a deeper level and is the continuation of our FAQ. What cache statuses are there? Different cache statuses can occur for Push and Pull Zones. Here's an overview of possible cache statuses: HIT -…

KeyCDN Log Format

The log fields are separated by | (pipe). See the example below. Timestamp incl. msec (e.g. 1383918771.123) POP (point of presence) IP address of the client (e.g. 111.111.111.0 or 2001:be:ef::1) HTTP status code. A full list of all status codes is…

400 Bad Request Error

What is a 400 Bad Request error? The 400 Bad Request error is an HTTP response status code that indicates the request cannot be completed. As with all 4xx errors, this is due to a perceived client error, which prevents the receiving server from…

403 Forbidden Error

What is a 403 Forbidden error? A 403 Forbidden error is an HTTP status code that can be returned from a web server to a client for a variety of reasons including IP blocking, bad file permissions, or if a user tries to access a hidden file. The web…

Fixing a 404 Not Found Nginx Error

What does a 404 Not Found error mean? A 404 Not Found error occurs when a user is trying to access an asset that either does not exist or has been moved. This commonly occurs when a permalink has been modified and no 301 redirect was put in place to…

405 Method Not Allowed

What does a 405 Method Not Allowed error mean? The HTTP protocol uses what is called methods in order to determine which actions should take place on a web server. There are a variety of HTTP methods, however a few examples include: GET Retrieves…

How to Fix a 408 Request Timeout Error

What does 408 Request Timeout mean? A 408 Request Timeout message is an HTTP status code that is returned to the client when a request to the server takes longer than the server's allocated timeout window. In this case, the server will terminate the…

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