We used F5 Big-IP Viprions for 4 years. It was a colossal waste of money. The bugs in these supposed "best in class" devices were ridiculous. Here's a taste:

We used F5 Big-IP Viprions for 4 years. It was a colossal waste of money. The bugs in these supposed "best in class" devices were ridiculous. Here's a taste: There was a bug where it would crash on a TCP FIN packet not associated with an existing connection. When a patch was released, installing it on the standby device reset its config and caused it to takeover as master, wiping the old master in the process. I'm not putting anything business critical behind an F5. Hopefully they don't screw up NGINX.