Per Origin Host Header Override

Load balancing is a crucial concept in managing server traffic efficiently. However, it becomes more complex as applications grow and interact with Host headers in HTTP requests. The Host header helps route each request to the correct origin server, ensuring users receive the information they requested from the start. This behavior can cause issues when using third-party applications like Google Compute Cloud, Google App Engine, Heroku, and Amazon S3, as these applications have an important effect on the requirements for a Host header. To address this problem, Cloudflare has added support to override the Host header on a per-origin basis within their Load Balancing solution. This means that users don't have to worry about sending errors back to end-users and can seamlessly integrate apps into their reliability solutions. The Host header override feature allows for flexibility in overriding the Host header on a per-origin basis, ensuring proper routing of requests without errors.