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Optimistic concurrency control (OCC), also known as optimistic locking, is a non-locking concurrency control method applied to transactional systems such as relational database management systems and software transactional memory. OCC assumes that multiple transactions can frequently complete without interfering with each other.
In the SMB protocol, opportunistic locking is a mechanism designed to improve performance by controlling caching of network files by the client. [11] Unlike traditional locks, opportunistic lock (OpLocks) are not strictly file locking or used to provide mutual exclusion. There are four types of opportunistic locks. Batch Locks
In databases and transaction processing, two-phase locking (2PL) is a pessimistic concurrency control method that guarantees conflict-serializability. [ 1 ] [ 2 ] It is also the name of the resulting set of database transaction schedules (histories).
lock contention: this occurs whenever one process or thread attempts to acquire a lock held by another process or thread. The more fine-grained the available locks, the less likely one process/thread will request a lock held by the other. (For example, locking a row rather than the entire table, or locking a cell rather than the entire row);
The role was created in 1962 as a way to enable the government to tap outside expertise, according to the publication Government Executive. A special government employee can be paid or unpaid, the ...
Opportunistic encryption (OE) refers to any system that, when connecting to another system, attempts to encrypt communications channels, otherwise falling back to unencrypted communications. This method requires no pre-arrangement between the two systems.
1. Hip Thrust. Position a bench behind you and use the Smith machine to load up on glute-focused hip thrusts. The fixed barbell keeps the motion stable, allowing you to concentrate on performing ...
The United States joined Australia and Britain in targeting Russia-based Zservers service provider for its role in supporting the Lockbit ransomware attacks, the U.S. Department of Treasury said ...