Tomcat集群架构

组件层级：

Server
|
Service
|
Engine
|  \
|  --- Cluster --*
|
Host
|------
/      \
Cluster    Context(1-N)
|             \
|             -- Manager
|                   \
|                   -- DeltaManager
|                   -- BackupManager
|---------------------------
|                       \
Channel                    \----------------------------- \
|                          \
Interceptor_1 ..               \
|                            \
Interceptor_N                    \-----------------------------      \
|          |         |             \
Receiver    Sender   Membership       \-- Valve
|      \
|       -- ReplicationValve
|       -- JvmRouteBinderValve
|-- LifecycleListener
|-- ClusterListener
|      \
|       -- ClusterSessionListener
|-- Deployer
\-- FarmWarDeployer