The network redirector and the server involved open and close the opportunistic locks automatically. When a local application requests access to a remote file, the implementation of opportunistic locks is transparent to the application. In other words, the server grants such locks whenever other factors make the locks possible. From the point of view of the client, they are opportunistic. They are requests from the client to the server. Opportunistic locks are not commands by the client to the server. In other words, if data is coherent, data on the server and all the clients is synchronized. Data that is coherent is data that is the same across the network.
Opportunistic locks coordinate data caching and coherency between clients and servers and among multiple clients. Opportunistic locks are used by network redirectors on clients with remote servers, as well as by client applications on local servers. In most cases, a client requests an opportunistic lock so it can cache data locally, thus reducing network traffic and improving apparent response time.
An opportunistic lock (also called an oplock) is a lock placed by a client on a file residing on a server.
0 kommentar(er)
