Hey everybody, a client of ours, for whom we will be building an EE-based site, has some server-related questions that I cannot answer. Wondering if somebody could help out with some technical know-how.

1. How do we handle the sharing of a user session between two EE machines on a load balanced model ?
2. Has anyone used a Horizontal scaling model of servers for EE in case of a heavy traffic site ? or simply for the purposes of redundancy ?

Thanks!
Sam