The Web Services Reliability (WS-Reliability) is a generic and open model for ensuring reliable message delivery for Web Services. It defines reliable message delivery as the ability to guarantee message delivery to software applications - Web services or Web service client applications - with a chosen level of quality of service (QoS). QoS is defined as the ability to determine the following aspects of message delivery:
- Message persistence
- Message acknowledgement and resending
- Elimination of duplicate messages
- Ordered delivery of messages
- Delivery status awareness for sender and receiver applications
The WS-Reliability specification provides WSDL definitions for reliable messaging and the message formats specified as SOAP headers and/or body content.
It addresses the dependencies between the capacity of the messaging nodes (persistence, message processing) and the level of QoS that can be provided.
The OASIS Web Services Reliable Messaging (WSRM) Technical Committee is responsible for the specification.
WS-ReliableMessaging became an OASIS standard in 2004.
Also see Web Services Reliable Messaging (WS-ReliableMessaging). Yes, the names are confusing. See a Cover Page on the two specifications (new window).
Organization: OASIS
More information: WSRM page on the OASIS website (new window)
More on the general topic: Messaging specifications
- Asynchronous Application Service Protocol (ASAP) for SOAP
- Message Service Specification (MSS)
- Representational State Transfer (REST)
- RosettaNet Business Message
- SOAP
- Web Distributed Data Exchange (WDDX)
- Web Services Addressing (WS-Addressing)
- Web Services Eventing (WS-Eventing)
- Web Services Notification (WSN)
- Web Services Reliable Messaging (WS-ReliableMessaging)
- XML Protocol (XMLP)