Abstract: A method for providing an application cluster service (APCS) with fault-detection and failure-recovery capabilities. This method is composed of the steps of nodes clustering, invoking and detecting applications, fault-recovery of applications, detection of nodes, and node replacement. This method is applicable in a clustered environment to detect if a slave node is failed by sending a heartbeat periodically from a master node; and to detect if the master node still exists by checking if the master node stops sending the heartbeat (i.e. the master node may be failed).

Abstract: A method for providing an application cluster service (APCS) with fault-detection and failure-recovery capabilities. This method is composed of the steps of nodes clustering, invoking and detecting applications, fault-recovery of applications, detection of nodes, and node replacement. This method is applicable in a clustered environment to detect if a slave node is failed by sending a heartbeat periodically from a master node; and to detect if the master node still exists by checking if the master node stops sending the heartbeat (i.e. the master node may be failed).

Abstract: A generic software testing system and mechanism is disclosed for use in distributed object-oriented systems. The present invention directly utilizes class diagrams (or interface definitions) and sequence diagrams to automatically generate the execution codes and test template required for testing the software system, wherein the class diagram data, the interface definition data and the sequence diagram data are generated by a software development tool of distributed object-oriented system. The present invention is applicable to the tests of a software system of which the functions and operations can be presented merely with class diagrams (or interface definitions) and sequence diagrams generated by the tools used during software development, wherein the software system can be as small as an individual unit (component) or module, or as large as an entire distributed object-oriented system.