Channel ownership in a publish / subscribe system

摘要

A method of managing channel ownership in a publish / subscribe computing environment, the method comprising: determining on a first server (314) using a processor (206) and memory (208) that there is a subscription request (320) from a client (306) relates (604) to a channel, the channel having a channel identifier; causing a switching component (324) in a messaging middleware to send a session queue (426) associated with the client (306) to the channel configuring a mandatory delivery message to be forwarded through the switching component (324) using (320) a publishing component identifier, the publishing component identifier being related to the channel identifier; communicating the mandatory delivery message (320) from the first server to the switching component (324 ) so that an intent of the first server (314) is specified becomes a publishing component of the channel, the mandatory delivery message (320) causing the channel ownership of the channel to be limited to a single publishing component, receiving an abort message at the first server (314) from a second server (314), wherein the abort message is forwarded according to a publish component identifier and has a rank corresponding to the second server, and wherein both the first server and the second server attempt to become publish components of content in the channel; determining whether the first server (314) the publishing component of the channel remains by comparing the rank corresponding to the second server (314) from the abort message with a rank corresponding to the first server (314); and in response to the second server (314) ranking higher than the first server (314) that does not remain the publishing component of the channel, unbinding a server instance queue associated with the first server (314) the switching component (324, 524).