{"id":15106,"date":"2020-04-12T13:46:55","date_gmt":"2020-04-12T13:46:55","guid":{"rendered":"https:\/\/www.gencayyildiz.com\/blog\/?p=15106"},"modified":"2020-04-12T13:46:55","modified_gmt":"2020-04-12T13:46:55","slug":"redis-yazi-serisi-4-on-demand-caching-pre-populate-caching-absolute-time-ve-sliding-time-kavramlari","status":"publish","type":"post","link":"https:\/\/www.gencayyildiz.com\/blog\/redis-yazi-serisi-4-on-demand-caching-pre-populate-caching-absolute-time-ve-sliding-time-kavramlari\/","title":{"rendered":"Redis Yaz\u0131 Serisi 4 &#8211; On-demand Caching, Pre-populate Caching, Absolute Time ve  Sliding Time Kavramlar\u0131"},"content":{"rendered":"<div id=\"fb-root\"><\/div>\n<p>Merhaba,<\/p>\n<p><a href=\"https:\/\/www.gencayyildiz.com\/blog\/redis-yazi-dizisi\/\" rel=\"noopener noreferrer\" target=\"_blank\">Redis yaz\u0131 serisinin<\/a> bu d\u00f6rd\u00fcnc\u00fc makalesinde belirli kavramsal temelleri oturtabilmek ama\u00e7l\u0131 kalem oynatacak ve On-demand Caching, Pre-populate Caching ve Sliding Time kavramlar\u0131na a\u00e7\u0131kl\u0131k getirmeye \u00e7al\u0131\u015faca\u011f\u0131z.<\/p>\n<h5>On-demand Caching Nedir?<\/h5>\n<p>Cachelenecek datalar\u0131n kullan\u0131c\u0131dan talep geldikten sonra cachelenmesidir.<\/p>\n<h5>Pre-populate Caching Nedir<\/h5>\n<p>Cachelenecek datalar\u0131n uygulama aya\u011fa kald\u0131r\u0131l\u0131r kald\u0131r\u0131lmaz cachelenmesidir. Genellikle static veriler tercih edilir. \u00d6rne\u011fin; veritaban\u0131ndaki &#8216;\u015fehirler&#8217; tablosu verisel a\u00e7\u0131dan g\u00fcncellenmesi neredeyse m\u00fcmk\u00fcn olmayan bir i\u00e7eri\u011fe sahip oldu\u011fu i\u00e7in ilk kullan\u0131c\u0131dan gelecek isteklerinde direkt olarak cacheden kar\u015f\u0131lanmas\u0131 performans a\u00e7\u0131s\u0131ndan do\u011fru hamle olacakt\u0131r.<\/p>\n<hr>\n<p>Her\u015feyin bir \u00f6mr\u00fc oldu\u011fu gibi cachelenecek datalar\u0131nda ne kadar s\u00fcreli\u011fine cache&#8217;de tutulaca\u011f\u0131na dair de belirli bir s\u00fcre mevcuttur. Ve tabi ki de bu s\u00fcreyi kendi irademizle belirleyebiliriz. Cache&#8217;de ki verilerin \u00f6mr\u00fcn\u00fc belirlemek demek, o s\u00fcre zarf\u0131nda tekrar tekrar ilgili cache&#8217;i g\u00fcncel verilerle tazelemek demektir. Dolay\u0131s\u0131yla burada cache s\u00fcresini belirleyebilmek i\u00e7in tercih edebilece\u011fimiz &#8216;Absolute Time&#8217; ve &#8216;Sliding Time&#8217; olmak \u00fczere iki yakla\u015f\u0131m mevcuttur.<\/p>\n<h5>Absolute Time Nedir?<\/h5>\n<p>Cache&#8217;de ki datan\u0131n ne kadar tutulaca\u011f\u0131na dair net \u00f6mr\u00fcn\u00fcn belirtilmesidir. Belirtilen \u00f6m\u00fcr sona erdi\u011finde cache direkt olarak temizlenir.<\/p>\n<h5>Sliding Time Nedir?<\/h5>\n<p><a href=\"https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-300x166.jpg\" alt=\"Sliding Time\" width=\"300\" height=\"166\" class=\"alignleft size-medium wp-image-15119\" srcset=\"https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-300x166.jpg 300w, https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time.jpg 576w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nCachelenmi\u015f datan\u0131n memory&#8217;de belirtilen s\u00fcre periyodu zarf\u0131nda tutulmas\u0131n\u0131 belirtir. Belirtilen s\u00fcre i\u00e7erisinde cache&#8217;e yap\u0131lan eri\u015fim neticesinde de datan\u0131n \u00f6mr\u00fc bir o kadar uzat\u0131lacakt\u0131r. Aksi taktirdir belirtilen s\u00fcre zarf\u0131nda bir eri\u015fim s\u00f6z konusu olmazsa cache temizlenecektir.<\/p>\n<p>Tabi burada aral\u0131kl\u0131 eri\u015fimler neticesinde cache&#8217;de tutulan datan\u0131n uzun vadeli tutulmas\u0131, s\u00fcre\u00e7te veritan\u0131nda olas\u0131l\u0131\u011f\u0131 y\u00fcksek olan veri modifikasyonlar\u0131n\u0131n neticesindeki g\u00fcncel verilerle cache&#8217;in tazelenmesini engelleyece\u011finden dolay\u0131 bayat verilere sebebiyet verebilir. \u0130\u015fte b\u00f6yle bir durumu engelleyebilmek i\u00e7in cachelenmi\u015f datan\u0131n \u00f6mr\u00fcn\u00fc hem Absolute hem de Sliding yakla\u015f\u0131mlar\u0131yla belirlememiz daha do\u011fru olacakt\u0131r.<\/p>\n<p><a href=\"https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-and-absolutime-time.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-and-absolutime-time-1024x206.jpg\" alt=\"Sliding Time And Absolutime Time\" width=\"1024\" height=\"206\" class=\"aligncenter size-large wp-image-15124\" srcset=\"https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-and-absolutime-time-1024x206.jpg 1024w, https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-and-absolutime-time-300x60.jpg 300w, https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-and-absolutime-time-768x155.jpg 768w, https:\/\/www.gencayyildiz.com\/blog\/wp-content\/uploads\/2020\/04\/sliding-time-and-absolutime-time.jpg 1143w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Yukar\u0131daki \u015femada da g\u00f6r\u00fcld\u00fc\u011f\u00fc \u00fczere durumu senaryotik \u00f6rneklendirirsek e\u011fer; Sliding Time olarak 2 dk, Absolute Time olarak ise 10 dk verilen datan\u0131n cache&#8217;de ki \u00f6mr\u00fc; 2 dk i\u00e7erisinde eri\u015fim iste\u011fi geldi\u011fi taktirde 2 dk uzat\u0131lacakt\u0131r. Bu uzatlamalar totalde 10 dk kadar olacakt\u0131r. E\u011fer 2dk i\u00e7erisinde bir istek gelmezse ya da sliding son periyotta ise art\u0131k cache geri d\u00f6n\u00fc\u015fs\u00fcz silinecektir.<\/p>\n<p>\u0130lgilenenlerin faydalanmas\u0131 dile\u011fiyle&#8230;<br \/>\nSonraki yaz\u0131lar\u0131mda g\u00f6r\u00fc\u015fmek \u00fczere&#8230;<br \/>\n\u0130yi \u00e7al\u0131\u015fmalar&#8230;<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Merhaba, Redis yaz\u0131 serisinin bu d\u00f6rd\u00fcnc\u00fc makalesinde belirli kavramsal temelleri oturtabilmek ama\u00e7l\u0131 kalem oynatacak ve On-demand Caching, Pre-populate Caching ve Sliding Time kavramlar\u0131na a\u00e7\u0131kl\u0131k getirmeye \u00e7al\u0131\u015faca\u011f\u0131z. On-demand Caching Nedir? Cachelenecek datalar\u0131n kullan\u0131c\u0131dan talep geldikten&#46;&#46;&#46;<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":1,"featured_media":15045,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3383],"tags":[3405,3402,3403,3404],"class_list":["post-15106","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-redis","tag-absolute-time","tag-on-demand-caching","tag-pre-populate-caching","tag-sliding-time-kavramlari"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/15106","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/comments?post=15106"}],"version-history":[{"count":21,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/15106\/revisions"}],"predecessor-version":[{"id":15129,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/15106\/revisions\/15129"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/media\/15045"}],"wp:attachment":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/media?parent=15106"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/categories?post=15106"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/tags?post=15106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}