@Override
      public void endpointCrashed(Endpoint endpoint) {
        invalidateServer(endpoint);
      }
Create a connection manager

@param poolName the name of the pool that owns us
@param factory the factory for new connections
@param maxConnections The maximum number of connections that can exist
@param minConnections The minimum number of connections that can exist
@param idleTimeout The amount of time to wait to expire idle connections. -1 means that idle
       connections are never expired.
@param lifetimeTimeout the lifetimeTimeout in ms.
geode-core/src/main/java/org/apache/geode/cache/client/internal/pooling/ConnectionManagerImpl.java