We have developed a PHP application to run on Apache on Linux.
Now, customer wants a load balanced & high availability setup. For load balancing, he proposes to use CloudFlare and deploy the app on on-premises servers. So, each server would have a public IP via the firewall.
However, he wants to place each server at a different location to protect against link failures as well as complete site failures.
Can Apache be configured for HA over WAN?
If the two servers run independently of each other, how would sessions be maintained?
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