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archive.today is an on-demand web archiving service at https://archive.today. A web archiving service allows Wikipedia editors to reduce link rot by preserving a copy of an online source that can be accessed if the original page is moved, changes, or disappears. Not all web pages can be archived using archive.today.
Bandwidth can be increasing by using large data bus path, data crossbar, memory interleaving (multi-bank parallel access) and out of order data transaction. The traffic can be reduced by using a cache that acts as a "filter" versus the shared memory, that is the cache is an essential element for shared-memory in SMP systems.
Cache invalidation is a process in a computer system whereby entries in a cache are replaced or removed.. It can be done explicitly, as part of a cache coherence protocol. In such a case, a processor changes a memory location and then invalidates the cached values of that memory location across the rest of the computer system.
Instead, invalidation messages simply enter an invalidation queue and their processing occurs as soon as possible (but not necessarily instantly). Consequently, a CPU can be oblivious to the fact that a cache line in its cache is actually invalid, as the invalidation queue contains invalidations that have been received but haven't yet been applied.
Using the above format is discouraged. The request is redirected to the long-form URL, including a 14-digit datetime stamp, for the latest archive copy thereby defeating the purpose of using the archive to link directly to a specific old version of the page. Likewise, a similar archive URL but with the number 1000 links to the oldest archive copy.
Similar to archive.today, the Wayback Machine takes snapshots of webpages at certain times, as well as user-initiated on-demand archiving called "Save Page Now" (SPN). [2] [3] Wayback and archive.today operate differently, and certain pages can be archived by one but not the other. Wayback is used in over 80% of instances.
Parchive (a portmanteau of parity archive, and formally known as Parity Volume Set Specification [1] [2]) is an erasure code system that produces par files for checksum verification of data integrity, with the capability to perform data recovery operations that can repair or regenerate corrupted or missing data.
On the other hand, whenever a file with a clear archive bit is modified (edited), or copied or moved to a new location, the operating system will set the archive bit on the target file. Typically on a file system that has never been formally backed up, nearly all of the files will have their archive bits set, as there are few applications that ...