Shared Database Architecture

[root]

* Phase 1: standard web-app 3-tier architecture.
            * Multiple "Stateless" servers
            * Load balancer directs requests to servers
            * Shared DB server (option: slave stand-by)
            * Option: squid cache for fetching censored sites
            * [[Image(haproxy-pmode.png)]]
            * Phase 2: multi-site
            * Phase 1 is one site
            * Multiple sites controlled from central management system
            * Push config from central to site DBs
            * Pull stats from site to central DB
            * Bi-directional user records
            * Tasks: sketch architecture, config in lab, testing

[root (n-root-psiphon-ca)]

Phase 1 Architecture