Load balancing system
First Claim
1. A load balancing system applied in a network system comprising a plurality of clients, and a plurality of servers which are separately provided in a plurality of sites and supply services to said plurality of clients, the load balancing system balancing service requests from said plurality of clients, and comprising:
- a plurality of first load balancing units which are provided physically separate and balance load by primary-sorting service requests from said plurality of clients to said plurality of sites;
a plurality of second load balancing units which are provided in correspondence with said plurality of sites and each carry out load balancing by secondary-sorting a service request which has been primary-sorted by said first load balancing unit to one of a plurality of servers provided in said site;
one of said plurality of first load balancing units being set as a primary, the primary first load balancing unit monitoring the operating status of the other first load balancing units and said plurality of second load balancing units, and removing a unit which has stopped operating from the units which carry out load balancing.
1 Assignment
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Accused Products
Abstract
The load balancing system comprises a first load balancing apparatus (primary), a first load balancing apparatus (secondary), and a first load balancing apparatus (backup), which carry out load balancing by primary-sorting service requests from clients to service sites; and first and second secondary load balancing apparatuses which carry out load balancing by second-sorting the service request which has been primary-sorted by the first load balancing apparatus (primary), the first load balancing apparatus (secondary) and the first load balancing apparatus (backup), to one of multiple servers provided in the site.
217 Citations
11 Claims
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1. A load balancing system applied in a network system comprising a plurality of clients, and a plurality of servers which are separately provided in a plurality of sites and supply services to said plurality of clients, the load balancing system balancing service requests from said plurality of clients, and comprising:
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a plurality of first load balancing units which are provided physically separate and balance load by primary-sorting service requests from said plurality of clients to said plurality of sites;
a plurality of second load balancing units which are provided in correspondence with said plurality of sites and each carry out load balancing by secondary-sorting a service request which has been primary-sorted by said first load balancing unit to one of a plurality of servers provided in said site;
one of said plurality of first load balancing units being set as a primary, the primary first load balancing unit monitoring the operating status of the other first load balancing units and said plurality of second load balancing units, and removing a unit which has stopped operating from the units which carry out load balancing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification