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  2. tmpfs - Wikipedia

    en.wikipedia.org/wiki/Tmpfs

    Some Linux distributions (e.g. Debian) do not have a tmpfs mounted on /tmp by default; in this case, files under /tmp will be stored in the same file system as /. And on almost all Linux distributions, a tmpfs is mounted on /run/ or /var/run/ to store temporary run-time files such as PID files and Unix domain sockets.

  3. Temporary folder - Wikipedia

    en.wikipedia.org/wiki/Temporary_folder

    In Unix and Linux, the global temporary directories are /tmp and /var/tmp. Web browsers periodically write data to the tmp directory during page views and downloads. Typically, /var/tmp is for persistent files (as it may be preserved over reboots), and /tmp is for more temporary files. See Filesystem Hierarchy Standard.

  4. Voldemort (distributed data store) - Wikipedia

    en.wikipedia.org/wiki/Voldemort_(distributed...

    Voldemort does not try to satisfy arbitrary relations and the ACID properties, but rather is a big, distributed, persistent hash table. [2] A 2012 study comparing systems for storing application performance management data reported that Voldemort, Apache Cassandra, and HBase all offered linear scalability in most cases, with Voldemort having the lowest latency and Cassandra having the highest ...

  5. Unix filesystem - Wikipedia

    en.wikipedia.org/wiki/Unix_filesystem

    Server data (data for services provided by system). /sys: In some Linux distributions, contains a sysfs virtual filesystem, containing information related to hardware and the operating system. On BSD systems, commonly a symlink to the kernel sources in /usr/src/sys. /tmp: A place for temporary files not expected to survive a reboot.

  6. Sticky bit - Wikipedia

    en.wikipedia.org/wiki/Sticky_bit

    To clear it, use chmod -t /usr/local/tmp or chmod 0777 /usr/local/tmp (the latter will also reset the tmp directory to standard permissions). In Unix symbolic file system permission notation , the sticky bit is represented either by the letter t or T in the final character-place depending on whether the execution bit for the others category is ...

  7. Redo log - Wikipedia

    en.wikipedia.org/wiki/Redo_log

    Before an Oracle database changes data in a datafile it writes changes to the redo log. If something happens to one of the datafiles, a recovery procedure can restore a backed-up datafile and then replay the redo written since backup-time; this brings the datafile to the state it had before it became unavailable.

  8. Firebird (database server) - Wikipedia

    en.wikipedia.org/wiki/Firebird_(database_server)

    Within a week of the InterBase 6.0 source being released by Borland on 25 July 2000, [4] [5] the Firebird project was created on SourceForge. [6] [7] Firebird 1.0 was released for Linux, Microsoft Windows and Mac OS X on 11 March 2002, [8] with ports to Solaris, FreeBSD 4, HP-UX over the next two months.

  9. Tombstone (data store) - Wikipedia

    en.wikipedia.org/wiki/Tombstone_(data_store)

    In order not to fill the data store with useless information, there is a policy to remove tombstones completely. For this, the system checks the age of the tombstone and removes it after a prescribed time has elapsed. In Apache Cassandra, this elapsed time is set with the GCGraceSeconds parameter [1] and the process is named Compaction. [2]