{"version":"1.0","provider_name":"Kodlar\u0131n Gizemli D\u00fcnyas\u0131","provider_url":"https:\/\/fatihsoysal.com\/blog","author_name":"Fatih Soysal","author_url":"https:\/\/fatihsoysal.com\/blog\/author\/fatihsoysal\/","title":"React'te useCallback: Fonksiyon Bellekleme ve Yeniden Olu\u015fturma \u00d6nleme","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"OQOpYsqYks\"><a href=\"https:\/\/fatihsoysal.com\/blog\/reactte-usecallback-fonksiyon-bellekleme-ve-yeniden-olusturma-onleme\/\">React&#8217;te useCallback: Fonksiyon Bellekleme ve Yeniden Olu\u015fturma \u00d6nleme<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/fatihsoysal.com\/blog\/reactte-usecallback-fonksiyon-bellekleme-ve-yeniden-olusturma-onleme\/embed\/#?secret=OQOpYsqYks\" width=\"600\" height=\"338\" title=\"&#8220;React&#8217;te useCallback: Fonksiyon Bellekleme ve Yeniden Olu\u015fturma \u00d6nleme&#8221; &#8212; Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" data-secret=\"OQOpYsqYks\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n<\/script>\n","description":"React uygulamalar\u0131nda performans optimizasyonu son derece \u00f6nemlidir. \u00d6zellikle karma\u015f\u0131k uygulamalarda, bile\u015fenlerin gereksiz yere yeniden renderlanmas\u0131 performans sorunlar\u0131na yol a\u00e7abilir. Bu noktada React'in sundu\u011fu useCallback hook'u devreye girer. useCallback, fonksiyonlar\u0131 belle\u011fe alarak (memoize ederek), gereksiz yeniden olu\u015fturulmalar\u0131n\u0131 engeller ve uygulaman\u0131z\u0131n daha verimli \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flar."}