Semi-dynamic load balancer for periodically reassigning new tran

Details Semi-dynamic load balancer for periodically reassigning new tran Semi-dynamic load balancer for periodically reassigning new tran

1990-04-30

1994-02-01

Lee, Thomas C.

Boots, shoes, and leggings

395800, 364281, 3642816, 3642813, 3642814, 3642815, 364DIG1, 3649755, G06F 1500

Patent

active

052838978

ABSTRACT:
A semi-dynamic load balancer for a transaction processing system reallocates transaction types among computers in the system as a group rather than as individual transactions. Statistical data is accumulated in an affinity matrix which records the number of times a transaction type i was blocked by transaction type j was holding a lock on a data item that transaction type i wanted to access. When an overloaded computer is detected, transaction types are reallocated on the computers of the system according to a transaction type routing table which is updated based on data from the affinity matrix.

REFERENCES:
patent: 4920487 (1990-04-01), Baffes
Ciciani et al, "Load Sharing in Hybrid Distributed--Centralized Database Systems", 1988, pp. 274-281.

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