Файловый менеджер - Редактировать - /var/www/html/mediawiki-1.43.1/includes/Settings/Cache/CacheableSource.php
Ðазад
<?php namespace MediaWiki\Settings\Cache; use MediaWiki\Settings\Source\SettingsSource; /** * A {@link SettingsSource} that can be cached. It must return a unique * (enough) and deterministic hash key for cache indexing. * * @since 1.38 * @stable to implement */ interface CacheableSource extends SettingsSource { /** * Allow the caching layer to attempt to return stale results in the event * that loading from the original source fails. * * Note that allowing stale results will result in cache items being * stored indefinitely regardless of the {@link getExpiryTtl()} value, and * since there is currently no pruning of cache items, it is advised that * sources allowing stale results also implement an immutable * `getHashKey()` based only on constructor arguments. * * @return bool */ public function allowsStaleLoad(): bool; /** * Returns the cache TTL (in seconds) for this source. * * @return int */ public function getExpiryTtl(): int; /** * Coefficient used in determining early expiration of cached settings to * avoid stampedes. * * Increasing this value will cause the random early election to happen by * a larger margin of lead time before normal expiry, relative to the * cache value's generation duration. Conversely, returning a lesser value * will narrow the margin of lead time, making the cache hold items for * slightly longer but with more likelihood that concurrent regenerations * and set overwrites will occur. Returning <code>0</code> will * effectively disable early expiration, and by extension disable stampede * mitigation altogether. * * A greater value may be suitable if a source has a highly variable * generation duration, but most implementations should simply return * <code>1.0</code>. * * @link https://en.wikipedia.org/wiki/Cache_stampede#Probabilistic_early_expiration * @link https://cseweb.ucsd.edu/~avattani/papers/cache_stampede.pdf * * Optimal Probabilistic Cache Stampede Prevention * Vattani, A.; Chierichetti, F.; Lowenstein, K. (2015), "Optimal * Probabilistic Cache Stampede Prevention" (PDF), Proceedings of the VLDB * Endowment, VLDB, 8 (8): 886–897, doi:10.14778/2757807.2757813, ISSN * 2150-8097 https://cseweb.ucsd.edu/~avattani/papers/cache_stampede.pdf * * @return float */ public function getExpiryWeight(): float; /** * Returns a deterministically computed key for use in caching settings * from this source. * * @return string */ public function getHashKey(): string; }
| ver. 1.1 | |
.
| PHP 8.4.18 | Ð“ÐµÐ½ÐµÑ€Ð°Ñ†Ð¸Ñ Ñтраницы: 0 |
proxy
|
phpinfo
|
ÐаÑтройка