In this paper, a quorum-based (QB) ordered (QBO) relation among request messages is defined to make the replicas consistent. We discuss a group protocol which ...

Abstract. Distributed applications are realized by cooperation of mul- tiple processes which manipulate data objects like databases. Objects in.

In this paper, a quorum-based (QB) ordered (QBO) relation among request messages is defined to make the replicas consistent. We discuss a group protocol which ...

We discuss a group protocol which supports a group of replicas with the quorum based ordered delivery of request messages. Published in: Proceedings Seventh ...

4.2 Delivery of requests. Suppose a computer pt receives a message m. Let mu denote a message sent by p, such that mu 4 m and there is no message m; from p ...

Traditional group protocols support the ordered delivery of messages transmitted in the network. Only messages significant for the applications should be ...

❚ Role of group membership service. ❙Provide an interface for group membership changes. ❙Implement a failure detector. ❙Notify members of group membership.

Where and when replicas should be created and deleted? – Replicate (or migrate) files to servers that are close to clients that issue many requests.

The paper addresses the problem of client–service inter- action in the case of replicated service provision. Exist- ing systems that follow the State ...

Replica groups require complex protocols implementing ordering and delivery guarantees to ensure state consistency. These protocols have an impact on the ...