Systems and methods that utilize persisted push/pull state to provide reliable message publishing

摘要

The present invention relates to systems and methods that facilitate pulling and/or receiving data from a client and posting the data for access by subscribing systems. The systems and methods include a message agent that generates a connection instance that can store connection-related information such as data conveyance state, data identification, and connection identification. Access to the connection instance can be provided to a machine, which can utilize the information to lock the connection and connection instance and begin pulling or receiving data from the client. As the machine pulls or receives data, the data can be published and the connection instance can be concurrently updated to reflect the present state of data conveyance. The information within the connection instance can be utilized to re-establish of severed connection, and to dynamically float the connection between machines to dynamically balance load, ensure reliability and recover from errors.