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  2. Comparison of version-control software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_version...

    Local branches: Create a local branch that does not exist in the original remote repository; checkout: Create a local working copy from a (remote) repository; update: Update the files in a working copy with the latest version from a repository; lock: Lock files in a repository from being changed by other users

  3. Branching (version control) - Wikipedia

    en.wikipedia.org/wiki/Branching_(version_control)

    The users of the version control system can branch any branch. Branches are also known as trees, streams or codelines. The originating branch is sometimes called the parent branch, the upstream branch (or simply upstream, especially if the branches are maintained by different organizations or individuals), or the backing stream.

  4. Master Lock - Wikipedia

    en.wikipedia.org/wiki/Master_Lock

    Master Lock is an American company that sells padlocks, combination locks, safes, and related security products. Now a subsidiary of Fortune Brands Innovations , Master Lock Company LLC was formed in 1921 by locksmith -inventor Harry Soref and is headquartered in Oak Creek, Wisconsin .

  5. Record locking - Wikipedia

    en.wikipedia.org/wiki/Record_locking

    not hold the lock across system or function calls where the entity is no longer running on the processor – this can lead to deadlock; ensure that if the entity is unexpectedly exited for any reason, the lock is freed. Non-holders of the lock (a.k.a. waiters) can be held in a list that is serviced in a round-robin fashion, or in a FIFO queue ...

  6. Read-copy-update - Wikipedia

    en.wikipedia.org/wiki/Read-copy-update

    In computer science, read-copy-update (RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and update elements that are linked through pointers and that belong to shared data structures (e.g., linked lists, trees, hash tables).

  7. Apache CouchDB - Wikipedia

    en.wikipedia.org/wiki/Apache_CouchDB

    CouchDB is well suited for applications with accumulating, occasionally changing data, on which pre-defined queries are to be run and where versioning is important (CRM, CMS systems, by example). Master-master replication is an especially interesting feature, allowing easy multi-site deployments. [14]

  8. Optimistic concurrency control - Wikipedia

    en.wikipedia.org/wiki/Optimistic_concurrency_control

    The GT.M database engine uses OCC for managing transactions [8] (even single updates are treated as mini-transactions). Microsoft's Entity Framework (including Code-First) has built-in support for OCC based on a binary timestamp value. [9] Most revision control systems support the "merge" model for concurrency, which is OCC. [citation needed]

  9. Branch predictor - Wikipedia

    en.wikipedia.org/wiki/Branch_predictor

    Without branch prediction, the processor would have to wait until the conditional jump instruction has passed the execute stage before the next instruction can enter the fetch stage in the pipeline. The branch predictor attempts to avoid this waste of time by trying to guess whether the conditional jump is most likely to be taken or not taken.