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Server Architecture

The container for the Neuron ESB server runtime is a single Windows Service Application named the ESB Service. The ESB Service reads its configuration and creates a collection of child services, each in its own AppDomain. As shown below, the child services provide connection, publishing, messaging, and infrastructure services.

Figure 1: ESB Server Architecture

Adapters and Bindings

The adapters and bindings provide connection to service-oriented endpoints and non-service endpoints. [suggestion delete this sentence ] All three represent extensibility points to connecting new kinds of systems and services to the ESB.

WCF Service Bindings provide connections to web services.

.NET adapters provide easy-to-write .NET connections to systems and resources.

WCF LOB adapters provide connections to legacy systems and line-of-business systems.

Connection Services

Client connectors allow applications to connect to the ESB using web services.

Service connectors allow the ESB to connect to web services. When combined with a client connector, service connectors can provide routing and mediation.

Adapter endpoints maintain a connection to additional resources and applications.  Based on the capabilities and configuration of the adapter, the adapter may be a message source or a message destination.

Publishing Engines

Publishing engines provide server-side support for various types of topic channels. Peer, TCP, and MSMQ topics require a publishing service to facilitate communication.

Messaging Services

An Auditing Service stores sent and received messages to an audit database for topics that have auditing enabled in the configuration.

A Bridge Service provides real-time or queued-relay bridges across topics and zones

Foundation Services

The Bootstrap Service provides a connection point to the messaging fabric for endpoint applications.

The Configuration Service provides publishers and subscribers with configuration information.

The Security Bridge Service provides authentication and authorization of parties.

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