Preventing conflicts in distributed systems

Details Preventing conflicts in distributed systems Preventing conflicts in distributed systems

1996-06-19

1998-09-01

Hsu, Alpus H.

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

370522, 707201, G06F 13376

Patent

active

058020624

ABSTRACT:
A token-based protocol used to prevent conflicts between copies of the same data items residing in different servers of a replicated distributed system is provided. The servers in the system with database replicas are provided with token pointers that are each associated with a token. Token pointers are used to track the current possessor of the token. Whenever a server receives or transfers a token, its corresponding token pointer is updated to reflect which server possesses the token. The use of token pointers advantageously eliminates the need for global cooperation by the servers to regenerate a lost token.

REFERENCES:
patent: 4949302 (1990-08-01), Arnolde et al.
patent: 5046002 (1991-09-01), Takashi et al.
patent: 5542046 (1996-07-01), Carlson et al.
patent: 5627961 (1997-05-01), Sharman
patent: 5634122 (1997-05-01), Loucks et al.
patent: 5644698 (1997-07-01), Cannon

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