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|+<!-- This Source Code Form is subject to the terms of the Mozilla Public|
|+ - License, v. 2.0. If a copy of the MPL was not distributed with this|
|+ - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->|
|+This document details the Persona production environment, how we maintain it, and how we deploy new code.|
|+# Persona Production Environment|
|+The Persona service is deployed, in production, as a set of clusters|
|+with DNS load-balancing across them. Each cluster is internally|
|+redundant, so no single host failure will take down the|
|+service. Geographic distribution of clusters exists for failover and|
|+scale. At this time, there are two clusters at two geographically|
|+distant data centers. The number of clusters will likely increase.|
|+A single Persona cluster looks like:|
|+!(./persona_arch.png "Optional title")|
|+# Deploying New Code|
|+# Monitoring & Escalation|