simplex clock system

notification is required to restore the original node. This can greatly improve the system's write success.Handling permanent faults (Replica synchronization)For faster detection of inconsistencies between replicas, Dynamo uses Merkletree. Merkletree is a hash value of the tree, each leaf node is the hash value of key, and then the middle node is the hash value of all son nodes, so that each child node changes will be reflected to the upper parent node. Using Merkletree to index data, as long a

Summary In practice, it is often required that the clocks of each workstation in the client/server architecture be synchronized with the server clock; This paper illustrates a solution based on Sybase database and PowerBuilder development tool. First, the preface PowerBuilder through the Data window object, the database can be operated conveniently and directly, so it has become the first Choice development tool for developing Client/server mode ap