Groups of Applications

Applications can use the group facility to coordinate fault-tolerant operation, or to distribute operating roles among application processes.

These topics present the group facility for administrators. Before reading them, first read the corresponding material in the topics “Groups of Applications” in TIBCO FTL Development.

  • Introduction to Groups
    A set of application processes can join a group. Each member of a group receives an ordinal, that is, a number representing its current position within the group. Application program logic uses the ordinal to select one of several possible operating roles.
  • Group Communication
    Within each member process, the group library connects to the group service within the FTL server. While connected, the member and the group service exchange periodic protocol messages. When disconnected, the member initiates reconnection.
  • Group Service
    Beyond configuring group communication in the realm, the group service does not require any further explicit administrative action.
  • Fault Tolerance of the Group Service
    The group service is automatically fault-tolerant, if and only if the FTL server is fault-tolerant.
  • Groups Status Table
    The Groups status table presents the status of application groups and their members.