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  2. List of PHP accelerators - Wikipedia

    en.wikipedia.org/wiki/List_of_PHP_accelerators

    Launched in 2001, ionCube PHP Accelerator (PHPA) was the first freely available PHP accelerator to compete with the commercial Zend Cache product. Created before ionCube Ltd. was founded and at a time when the performance of PHP was regarded as lackluster when compared to other popular web programming languages, [citation needed] PHPA showed that PHP can compete with other languages ...

  3. React (software) - Wikipedia

    en.wikipedia.org/wiki/React_(software)

    React DOM – Fix passive effects (useEffect) not being fired in a multi-root app. React Is – Fix lazy and memo types considered elements instead of components 16.13.0 26 February 2020 Features added in React Concurrent mode. Fix regressions in React core library and React Dom. 16.14.0 14 October 2020 Add support for the new JSX transform. 17.0.0

  4. List of cache coherency protocols - Wikipedia

    en.wikipedia.org/wiki/Cache_coherency_protocols...

    Sending cache is changed in S and the requesting cache is set R/F (in read miss the "ownership" is always taken by the last requesting cache) – shared intervention. – In all the other cases the data is supplied by the memory and the requesting cache is set S (V). Data stored in MM and only in one cache in E (R) state.

  5. Cache coherence - Wikipedia

    en.wikipedia.org/wiki/Cache_coherence

    Cache coherence is the discipline which ensures that the changes in the values of shared operands (data) are propagated throughout the system in a timely fashion. [2] The following are the requirements for cache coherence: [3] Write Propagation Changes to the data in any cache must be propagated to other copies (of that cache line) in the peer ...

  6. Cache replacement policies - Wikipedia

    en.wikipedia.org/wiki/Cache_replacement_policies

    When a cache line is reused the RRPV is set to zero, indicating that the line has been reused once and is likely to be reused again. On a cache miss, the line with an RRPV equal to the maximum possible RRPV is evicted; with 3-bit values, a line with an RRPV of 2 3 - 1 = 7 is evicted. If no lines have this value, all RRPVs in the set are ...

  7. Spurious wakeup - Wikipedia

    en.wikipedia.org/wiki/Spurious_wakeup

    In the Solaris implementation of condition variables, a spurious wakeup may occur without the condition being assigned if the process is signaled; the wait system call aborts and returns EINTR. [2] The Linux p-thread implementation of condition variables guarantees that it will not do that. [3] [4]

  8. Static random-access memory - Wikipedia

    en.wikipedia.org/wiki/Static_random-access_memory

    Examples include the ubiquitous 28-pin 8K × 8 and 32K × 8 chips (often but not always named something along the lines of 6264 and 62C256 respectively), as well as similar products up to 16 Mbit per chip. Synchronous – all timings are initiated by the clock edges. Address, data in and other control signals are associated with the clock signals.

  9. Derived unique key per transaction - Wikipedia

    en.wikipedia.org/wiki/Derived_unique_key_per...

    Before DUKPT, state of the art was known as Master/Session, which required every PIN-encrypting device to be initialized with a unique master key. In handling transactions originating from devices using Master/Session key management, an unwanted side effect was the need for a table of encryption keys as numerous as the devices deployed.