Borland Software Corporation

Cuie Zhao

Vishwanath Keshavamurthy Kasaravalli

Vijaykumar Natarajan

Methods and systems for load balancing of Common Object Request Broker Architecture (CORBA) object servers. A name service cluster is invoked. It is indicated to a user whether bind interceptors are in use. The user is provided with a class having relevant methods if bind interceptors are in use. The class that contains the most relevant methods is specified. Name service clusters are established for object servers where each name service cluster contains a unique object binding table containing object server reference bindings. Object server reference bindings having identical names are clustered into common clusters. A load balance is performed by having a name service select an object server located in an invoked cluster. A cluster component is appended to the invoked cluster to provide failover upon failover of the object server; and a selected object server reference binding is forwarded to a client upon completion of the load balance.

Name service object clustering

A naming service clustering method which permits naming service load balancing over a set of object references contained within the same cluster such that loads are equitably distributed among servers. Each cluster contains its own unique object binding table which contains object references which each typically represent a single server. Load balancing is performed using a load balance algorithm (e.g., Round Robin). The specific algorithm which is used to perform load balancing is specified upon creation of each naming service cluster. The method provides transparent load balancing among multiple object references in the same cluster. In addition, transparent 'failover' among object references in the same cluster is achieved. The method also provides a dynamic addition of new object references into a cluster via binding, along with the dynamic removal of old object references from a cluster via unbinding.

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Singapore, Singapore

Cuie Zhao