{"id":38372,"date":"2026-01-29T21:40:57","date_gmt":"2026-01-29T18:40:57","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=38372"},"modified":"2026-01-29T21:40:57","modified_gmt":"2026-01-29T18:40:57","slug":"react-async-kutuphanesi-ile-deklaratif-veri-cekme-modern-react-uygulamalarinda-asenkron-islemleri-yonetmek","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/react-async-kutuphanesi-ile-deklaratif-veri-cekme-modern-react-uygulamalarinda-asenkron-islemleri-yonetmek\/","title":{"rendered":"React-Async K\u00fct\u00fcphanesi ile Deklaratif Veri \u00c7ekme: Modern React Uygulamalar\u0131nda Asenkron \u0130\u015flemleri Y\u00f6netmek"},"content":{"rendered":"<p><body><\/p>\n<h2>React-Async K\u00fct\u00fcphanesi ile Deklaratif Veri \u00c7ekme: Modern React Uygulamalar\u0131nda Asenkron \u0130\u015flemleri Y\u00f6netmek<\/h2>\n<p>React uygulamalar\u0131 geli\u015ftirirken kar\u015f\u0131la\u015f\u0131lan en yayg\u0131n ve bazen en karma\u015f\u0131k g\u00f6revlerden biri, d\u0131\u015f kaynaklardan veri \u00e7ekme i\u015flemidir. API \u00e7a\u011fr\u0131lar\u0131 yapmak, y\u00fckleme durumlar\u0131n\u0131 y\u00f6netmek, hatalar\u0131 ele almak ve verileri bile\u015fenler aras\u0131nda do\u011fru bir \u015fekilde senkronize etmek, uygulaman\u0131n genel performans\u0131n\u0131 ve kullan\u0131c\u0131 deneyimini do\u011frudan etkiler. Geleneksel olarak, bu t\u00fcr asenkron i\u015flemler <code>useEffect<\/code> hook&#8217;u ve <code>useState<\/code> hook&#8217;u kombinasyonuyla manuel olarak y\u00f6netilir. Ancak bu yakla\u015f\u0131m, \u00f6zellikle karma\u015f\u0131k senaryolarda (\u00f6rne\u011fin, ba\u011f\u0131ml\u0131l\u0131klar\u0131n de\u011fi\u015fmesiyle yeniden \u00e7ekme, yar\u0131\u015f ko\u015fullar\u0131, iste\u011fi iptal etme, \u00f6nbelle\u011fe alma) h\u0131zl\u0131ca karma\u015f\u0131k, hataya a\u00e7\u0131k ve okunmas\u0131 zor bir hal alabilir.<\/p>\n<p>\u0130\u015fte tam bu noktada, <code>React-Async<\/code> gibi k\u00fct\u00fcphaneler devreye girerek asenkron i\u015flemleri daha deklaratif, \u00f6ng\u00f6r\u00fclebilir ve y\u00f6netilebilir bir \u015fekilde ele almam\u0131z\u0131 sa\u011flar. <code>React-Async<\/code>, React&#8217;in do\u011fas\u0131na uygun, bile\u015fen tabanl\u0131 bir yakla\u015f\u0131mla, promise tabanl\u0131 asenkron i\u015flemleri React bile\u015fenlerinizin i\u00e7inde kolayca y\u00f6netmenize olanak tan\u0131yan hafif ve esnek bir k\u00fct\u00fcphanedir. Bu makalede, <code>React-Async<\/code> k\u00fct\u00fcphanesinin temel prensiplerini, sundu\u011fu \u00f6zellikleri, kullan\u0131m senaryolar\u0131n\u0131 ve modern React uygulamalar\u0131nda nas\u0131l g\u00fc\u00e7l\u00fc bir ara\u00e7 olabilece\u011fini derinlemesine inceleyece\u011fiz.<\/p>\n<h3>Neden Deklaratif Veri \u00c7ekme?<\/h3>\n<p>React, kullan\u0131c\u0131 aray\u00fczlerini deklaratif bir \u015fekilde tan\u0131mlama felsefesi \u00fczerine kurulmu\u015ftur. Bu, uygulaman\u0131z\u0131n belirli bir anda nas\u0131l g\u00f6r\u00fcnmesi gerekti\u011fini &#8220;nas\u0131l&#8221; de\u011fil, &#8220;ne&#8221; olmas\u0131 gerekti\u011fini a\u00e7\u0131klaman\u0131z anlam\u0131na gelir. Ancak veri \u00e7ekme gibi yan etkiler (side effects) genellikle imperatif (emredici) bir \u015fekilde y\u00f6netilir. \u00d6rne\u011fin, <code>useEffect<\/code> i\u00e7inde bir <code>fetch<\/code> \u00e7a\u011fr\u0131s\u0131 yapmak, belirli bir olay zincirini (iste\u011fi ba\u015flat, cevab\u0131 bekle, durumu g\u00fcncelle) ad\u0131m ad\u0131m tan\u0131mlar.<\/p>\n<p>Bu imperatif yakla\u015f\u0131m\u0131n baz\u0131 dezavantajlar\u0131 vard\u0131r:<\/p>\n<p>*   <strong>Karma\u015f\u0131kl\u0131k:<\/strong> Y\u00fckleme durumlar\u0131, hata durumlar\u0131, ba\u015far\u0131l\u0131 durumlar i\u00e7in ayr\u0131 ayr\u0131 <code>useState<\/code> tan\u0131mlar\u0131 ve bunlar\u0131n <code>useEffect<\/code> i\u00e7inde manuel olarak g\u00fcncellenmesi gerekir.<br \/>\n*   <strong>Yar\u0131\u015f Ko\u015fullar\u0131:<\/strong> <code>useEffect<\/code> ba\u011f\u0131ml\u0131l\u0131klar\u0131 de\u011fi\u015fti\u011finde veya bile\u015fen demonte edildi\u011finde devam eden bir iste\u011fin sonucu, g\u00fcncel olmayan veya hatal\u0131 bir duruma yol a\u00e7abilir. Bu durumlar\u0131 \u00f6nlemek i\u00e7in manuel temizleme (cleanup) fonksiyonlar\u0131 yazmak zorunludur.<br \/>\n*   <strong>Tekrar Kullan\u0131labilirlik:<\/strong> Ayn\u0131 veri \u00e7ekme mant\u0131\u011f\u0131n\u0131 farkl\u0131 bile\u015fenlerde kullanmak istedi\u011finizde, genellikle \u00f6zel hook&#8217;lar yazmak veya mant\u0131\u011f\u0131 kopyalamak zorunda kal\u0131rs\u0131n\u0131z.<br \/>\n*   <strong>Okunabilirlik ve Bak\u0131m:<\/strong> Kod taban\u0131 b\u00fcy\u00fcd\u00fck\u00e7e, asenkron mant\u0131\u011f\u0131 takip etmek ve hatalar\u0131 ay\u0131klamak zorla\u015f\u0131r.<\/p>\n<p>Deklaratif veri \u00e7ekme, bu sorunlara \u00e7\u00f6z\u00fcm sunar. <code>React-Async<\/code> gibi k\u00fct\u00fcphaneler, bir promise&#8217;\u0131 veya bir asenkron fonksiyonu al\u0131r ve onun ya\u015fam d\u00f6ng\u00fcs\u00fcn\u00fc (beklemede, ba\u015far\u0131l\u0131, reddedildi) otomatik olarak y\u00f6netir. Siz sadece bu durumlar\u0131n her birinde UI&#8217;\u0131n nas\u0131l g\u00f6r\u00fcnmesi gerekti\u011fini belirtirsiniz. Bu, kodunuzu daha okunabilir, daha az hataya a\u00e7\u0131k ve daha s\u00fcrd\u00fcr\u00fclebilir hale getirir. <code>React-Async<\/code>, React&#8217;in deklaratif do\u011fas\u0131yla m\u00fckemmel bir uyum sa\u011flayarak, asenkron i\u015flemleri de UI gibi deklaratif bir \u015fekilde y\u00f6netmemize olanak tan\u0131r.<\/p>\n<h3>React-Async&#8217;i Anlamak<\/h3>\n<p><code>React-Async<\/code>, React bile\u015fenleri i\u00e7inde promise tabanl\u0131 asenkron i\u015flemleri y\u00f6netmek i\u00e7in tasarlanm\u0131\u015f esnek bir ara\u00e7t\u0131r. Amac\u0131, asenkron operasyonlar\u0131n durumlar\u0131n\u0131 (y\u00fckleniyor, tamamland\u0131, hata) otomatik olarak izlemek ve bu durumlara g\u00f6re UI&#8217;\u0131 render etmek i\u00e7in basit ve deklaratif bir API sa\u011flamakt\u0131r. K\u00fct\u00fcphane, hem render props API&#8217;si arac\u0131l\u0131\u011f\u0131yla <code><Async><\/code> bile\u015feni hem de React Hooks API&#8217;si arac\u0131l\u0131\u011f\u0131yla <code>useAsync<\/code> ve <code>useFetch<\/code> hook&#8217;lar\u0131 sunar, bu da onu modern React uygulamalar\u0131 i\u00e7in olduk\u00e7a uygun k\u0131lar.<\/p>\n<p><code>React-Async<\/code>&#8216;in temel \u00f6zellikleri \u015funlard\u0131r:<\/p>\n<p>*   <strong>Otomatik Durum Y\u00f6netimi:<\/strong> Bir promise&#8217;\u0131n <code>pending<\/code> (beklemede), <code>fulfilled<\/code> (ba\u015far\u0131l\u0131) ve <code>rejected<\/code> (reddedildi) durumlar\u0131n\u0131 otomatik olarak izler ve ilgili bilgileri bile\u015fene sa\u011flar.<br \/>\n*   <strong>Deklaratif API:<\/strong> Hem <code><Async><\/code> bile\u015feni hem de <code>useAsync<\/code> hook&#8217;u, asenkron i\u015flemleri React&#8217;in deklaratif do\u011fas\u0131na uygun bir \u015fekilde tan\u0131mlaman\u0131za olanak tan\u0131r.<br \/>\n*   <strong>Esneklik:<\/strong> Herhangi bir promise tabanl\u0131 i\u015flemi (veri \u00e7ekme, dosya y\u00fckleme, zamanlay\u0131c\u0131lar vb.) y\u00f6netebilir.<br \/>\n*   <strong>\u00d6nbelle\u011fe Alma (Caching):<\/strong> Ayn\u0131 promise i\u00e7in tekrar tekrar API \u00e7a\u011fr\u0131s\u0131 yapmaktan ka\u00e7\u0131nmak i\u00e7in basit bir \u00f6nbelle\u011fe alma mekanizmas\u0131 sunar.<br \/>\n*   <strong>Debounce ve Throttle:<\/strong> A\u015f\u0131r\u0131 API \u00e7a\u011fr\u0131lar\u0131n\u0131 \u00f6nlemek i\u00e7in istekleri geciktirme veya s\u0131n\u0131rlama yetene\u011fi.<br \/>\n*   <strong>Tekrar Deneme (Retries):<\/strong> Ge\u00e7ici a\u011f hatalar\u0131 gibi durumlarda istekleri otomatik olarak yeniden deneme.<br \/>\n*   <strong>\u0130ptal Etme (Aborting):<\/strong> Devam eden asenkron i\u015flemleri bile\u015fen demonte edildi\u011finde veya ba\u011f\u0131ml\u0131l\u0131klar de\u011fi\u015fti\u011finde iptal etme mekanizmas\u0131.<br \/>\n*   <strong>Sunucu Tarafl\u0131 \u0130\u015fleme (SSR) Deste\u011fi:<\/strong> Sunucu taraf\u0131nda veri \u00e7ekme ve istemci taraf\u0131nda hidrasyon i\u00e7in kolay entegrasyon.<br \/>\n*   <strong>TypeScript Deste\u011fi:<\/strong> G\u00fc\u00e7l\u00fc t\u00fcr \u00e7\u0131kar\u0131m\u0131 ve tip g\u00fcvenli\u011fi sa\u011flar.<\/p>\n<p>Bu \u00f6zellikler, <code>React-Async<\/code>&#8216;i sadece basit veri \u00e7ekme i\u015flemleri i\u00e7in de\u011fil, ayn\u0131 zamanda daha karma\u015f\u0131k asenkron ak\u0131\u015flar\u0131 y\u00f6netmek i\u00e7in de g\u00fc\u00e7l\u00fc bir ara\u00e7 haline getirir.<\/p>\n<h3>React-Async ile Ba\u015flang\u0131\u00e7<\/h3>\n<p><code>React-Async<\/code>&#8216;i projenize dahil etmek olduk\u00e7a basittir.<\/p>\n<p><strong>Kurulum:<\/strong><\/p>\n<pre><code class=\"language-bash\">npm install react-async\n<h2>veya<\/h2>\nyarn add react-async<\/code><\/pre>\n<p><strong>Temel Kullan\u0131m: <code><Async><\/code> Bile\u015feni ile<\/strong><\/p>\n<p><code><Async><\/code> bile\u015feni, render props desenini kullanarak asenkron i\u015flemlerin durumunu y\u00f6netir. <code>promiseFn<\/code> prop&#8217;u, \u00e7\u00f6z\u00fcmlenmesini istedi\u011finiz bir promise d\u00f6nd\u00fcren bir fonksiyon al\u0131r. Bile\u015fenin \u00e7ocuklar\u0131 ise, farkl\u0131 durumlar\u0131 (y\u00fckleniyor, ba\u015far\u0131l\u0131, hata) i\u015fleyen fonksiyonlar veya do\u011frudan JSX olabilir.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { Async } from 'react-async';\n\nconst fetchUsers = async () => {\n  const response = await fetch('https:\/\/jsonplaceholder.typicode.com\/users');\n  if (!response.ok) throw new Error('Kullan\u0131c\u0131lar y\u00fcklenirken bir hata olu\u015ftu.');\n  return response.json();\n};\n\nfunction UserList() {\n  return (\n    <Async promiseFn={fetchUsers}>\n      {({ data, error, isLoading }) => {\n        if (isLoading) return <div>Kullan\u0131c\u0131lar y\u00fckleniyor...<\/div>;\n        if (error) return <div>Hata: {error.message}<\/div>;\n        if (data)\n          return (\n            <div>\n              <h2>Kullan\u0131c\u0131 Listesi<\/h2>\n              <ul>\n                {data.map(user => (\n                  <li key={user.id}>{user.name}<\/li>\n                ))}\n              <\/ul>\n            <\/div>\n          );\n        return null; \/\/ Ba\u015flang\u0131\u00e7 durumu veya veri yoksa\n      }}\n    <\/Async>\n  );\n}\n\nexport default UserList;<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>fetchUsers<\/code> fonksiyonu bir promise d\u00f6nd\u00fcr\u00fcr. <code><Async><\/code> bile\u015feni bu promise&#8217;\u0131 otomatik olarak \u00e7al\u0131\u015ft\u0131r\u0131r ve durumunu izler. <code>isLoading<\/code>, <code>error<\/code> ve <code>data<\/code> gibi render prop&#8217;lar\u0131 arac\u0131l\u0131\u011f\u0131yla, uygulaman\u0131n mevcut durumuna g\u00f6re farkl\u0131 UI elemanlar\u0131 render edebiliriz.<\/p>\n<p><strong>Temel Kullan\u0131m: <code>useAsync<\/code> Hook&#8217;u ile<\/strong><\/p>\n<p>React Hooks, bile\u015fenler aras\u0131nda durum bilgisi olan mant\u0131\u011f\u0131 yeniden kullanmay\u0131 kolayla\u015ft\u0131rd\u0131. <code>useAsync<\/code> hook&#8217;u, <code><Async><\/code> bile\u015feninin sundu\u011fu t\u00fcm \u00f6zellikleri hook tabanl\u0131 bir API ile sunar.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { useAsync } from 'react-async';\n\nconst fetchPosts = async () => {\n  const response = await fetch('https:\/\/jsonplaceholder.typicode.com\/posts');\n  if (!response.ok) throw new Error('G\u00f6nderiler y\u00fcklenirken bir hata olu\u015ftu.');\n  return response.json();\n};\n\nfunction PostList() {\n  const { data, error, isLoading, reload } = useAsync({ promiseFn: fetchPosts });\n\n  if (isLoading) return <div>G\u00f6nderiler y\u00fckleniyor...<\/div>;\n  if (error) return <div>Hata: {error.message} <button onClick={reload}>Tekrar Dene<\/button><\/div>;\n  if (data)\n    return (\n      <div>\n        <h2>G\u00f6nderi Listesi<\/h2>\n        <button onClick={reload}>G\u00f6nderileri Yenile<\/button>\n        <ul>\n          {data.map(post => (\n            <li key={post.id}>\n              <h3>{post.title}<\/h3>\n              <p>{post.body}<\/p>\n            <\/li>\n          ))}\n        <\/ul>\n      <\/div>\n    );\n  return null;\n}\n\nexport default PostList;<\/code><\/pre>\n<p><code>useAsync<\/code> hook&#8217;u, <code>promiseFn<\/code> prop&#8217;u yerine bir konfig\u00fcrasyon nesnesi al\u0131r. Bu nesneye <code>promiseFn<\/code> (veya <code>deferFn<\/code> gibi di\u011fer se\u00e7enekler) tan\u0131mlan\u0131r. Hook, <code>data<\/code>, <code>error<\/code>, <code>isLoading<\/code>, <code>isResolved<\/code>, <code>isRejected<\/code>, <code>reload<\/code>, <code>run<\/code>, <code>cancel<\/code> gibi bir dizi de\u011fer d\u00f6nd\u00fcr\u00fcr. <code>reload<\/code> fonksiyonu, promise&#8217;\u0131 yeniden \u00e7al\u0131\u015ft\u0131rmak i\u00e7in kullan\u0131labilir, bu da kullan\u0131c\u0131lar\u0131n veriyi manuel olarak yenilemesine olanak tan\u0131r.<\/p>\n<h3>Geli\u015fmi\u015f \u00d6zellikler ve En \u0130yi Uygulamalar<\/h3>\n<p><code>React-Async<\/code>, temel veri \u00e7ekmenin \u00f6tesinde bir\u00e7ok geli\u015fmi\u015f \u00f6zellik sunar.<\/p>\n<h4>1. Durum Y\u00f6netimi<\/h4>\n<p><code>React-Async<\/code>, asenkron i\u015flemin farkl\u0131 a\u015famalar\u0131n\u0131 temsil eden d\u00f6rt ana durum sa\u011flar:<\/p>\n<p>*   <strong><code>initial<\/code>:<\/strong> Promise hen\u00fcz ba\u015flamad\u0131 veya s\u0131f\u0131rland\u0131.<br \/>\n*   <strong><code>pending<\/code> (isLoading):<\/strong> Promise \u00e7\u00f6z\u00fcmleniyor (veri \u00e7ekiliyor).<br \/>\n*   <strong><code>fulfilled<\/code> (isResolved):<\/strong> Promise ba\u015far\u0131yla \u00e7\u00f6z\u00fcmlendi (veri geldi).<br \/>\n*   <strong><code>rejected<\/code> (isRejected):<\/strong> Promise bir hata ile reddedildi.<\/p>\n<p>Bu durumlar, <code><Async><\/code> bile\u015feninin render prop&#8217;lar\u0131 veya <code>useAsync<\/code> hook&#8217;unun d\u00f6nd\u00fcrd\u00fc\u011f\u00fc de\u011ferler arac\u0131l\u0131\u011f\u0131yla kolayca eri\u015filebilir. Bu sayede, kullan\u0131c\u0131ya anlaml\u0131 geri bildirimler (y\u00fckleme g\u00f6stergeleri, hata mesajlar\u0131 vb.) sunmak \u00e7ok kolayla\u015f\u0131r.<\/p>\n<pre><code class=\"language-jsx\">\/\/ useAsync \u00f6rne\u011fi:\nconst { data, error, isLoading, isResolved, isRejected } = useAsync({ promiseFn: fetchData });\n\nif (isLoading) return <LoadingSpinner \/>;\nif (isRejected) return <ErrorMessage message={error.message} \/>;\nif (isResolved) return <DataDisplay data={data} \/>;<\/code><\/pre>\n<h4>2. \u00c7al\u0131\u015ft\u0131rmay\u0131 Erteleme (Deferring Execution)<\/h4>\n<p>Varsay\u0131lan olarak, <code>promiseFn<\/code> veya <code>deferFn<\/code> ile tan\u0131mlanan promise, bile\u015fen monte edildi\u011finde otomatik olarak \u00e7al\u0131\u015f\u0131r. Ancak bazen bir API \u00e7a\u011fr\u0131s\u0131n\u0131 bir kullan\u0131c\u0131 eylemine (\u00f6rne\u011fin, bir d\u00fc\u011fmeye t\u0131klama) ba\u011flamak isteyebilirsiniz. Bunun i\u00e7in <code>deferFn<\/code> prop&#8217;unu veya <code>useAsync<\/code> hook&#8217;unun <code>run<\/code> metodunu kullan\u0131r\u0131z.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { useAsync } from 'react-async';\n\nconst searchAPI = async (query) => {\n  if (!query) return [];\n  const response = await fetch(<code>https:\/\/api.example.com\/search?q=${query}<\/code>);\n  if (!response.ok) throw new Error('Arama s\u0131ras\u0131nda bir hata olu\u015ftu.');\n  return response.json();\n};\n\nfunction SearchComponent() {\n  const [searchQuery, setSearchQuery] = React.useState('');\n  const { data, error, isLoading, run } = useAsync({\n    deferFn: searchAPI, \/\/ Otomatik \u00e7al\u0131\u015fmaz\n  });\n\n  const handleSearch = () => {\n    run(searchQuery); \/\/ Kullan\u0131c\u0131 eylemiyle \u00e7al\u0131\u015ft\u0131r\n  };\n\n  return (\n    <div>\n      <input\n        type=\"text\"\n        value={searchQuery}\n        onChange={(e) => setSearchQuery(e.target.value)}\n        placeholder=\"Aramak i\u00e7in yaz\u0131n...\"\n      \/>\n      <button onClick={handleSearch} disabled={isLoading}>\n        {isLoading ? 'Aran\u0131yor...' : 'Ara'}\n      <\/button>\n\n      {error && <div>Hata: {error.message}<\/div>}\n      {data && (\n        <ul>\n          {data.map((item) => (\n            <li key={item.id}>{item.name}<\/li>\n          ))}\n        <\/ul>\n      )}\n    <\/div>\n  );\n}<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>searchAPI<\/code> <code>deferFn<\/code> olarak tan\u0131mland\u0131\u011f\u0131 i\u00e7in bile\u015fen ilk monte edildi\u011finde \u00e7al\u0131\u015fmaz. <code>run<\/code> metodu, <code>handleSearch<\/code> fonksiyonu i\u00e7inde \u00e7a\u011fr\u0131larak arama i\u015flemini ba\u015flat\u0131r ve <code>searchQuery<\/code> parametresi <code>searchAPI<\/code> fonksiyonuna iletilir.<\/p>\n<h4>3. Veri Ba\u011f\u0131ml\u0131l\u0131klar\u0131 ve Yeniden \u00c7ekme<\/h4>\n<p>Bir API \u00e7a\u011fr\u0131s\u0131n\u0131n belirli bir bile\u015fenin prop&#8217;lar\u0131na veya durumuna ba\u011fl\u0131 oldu\u011fu yayg\u0131n bir senaryodur. Bu ba\u011f\u0131ml\u0131l\u0131klar de\u011fi\u015fti\u011finde verinin yeniden \u00e7ekilmesi gerekebilir. <code>React-Async<\/code>, bu durumu <code>watch<\/code> prop&#8217;u (veya <code>useAsync<\/code> konfig\u00fcrasyonunda <code>watch<\/code> se\u00e7ene\u011fi) ile ele al\u0131r.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { useAsync } from 'react-async';\n\nconst fetchUserDetails = async (userId) => {\n  if (!userId) return null;\n  const response = await fetch(<code>https:\/\/jsonplaceholder.typicode.com\/users\/${userId}<\/code>);\n  if (!response.ok) throw new Error('Kullan\u0131c\u0131 detaylar\u0131 y\u00fcklenirken bir hata olu\u015ftu.');\n  return response.json();\n};\n\nfunction UserDetails({ userId }) {\n  const { data, error, isLoading } = useAsync({\n    promiseFn: fetchUserDetails,\n    args: [userId], \/\/ Promise fonksiyonuna arg\u00fcman olarak ge\u00e7irilir\n    watch: userId, \/\/ userId de\u011fi\u015fti\u011finde yeniden \u00e7eker\n  });\n\n  if (isLoading) return <div>Kullan\u0131c\u0131 {userId} y\u00fckleniyor...<\/div>;\n  if (error) return <div>Hata: {error.message}<\/div>;\n  if (data)\n    return (\n      <div>\n        <h3>Kullan\u0131c\u0131 Detaylar\u0131: {data.name}<\/h3>\n        <p>Email: {data.email}<\/p>\n        <p>Telefon: {data.phone}<\/p>\n      <\/div>\n    );\n  return <div>L\u00fctfen bir kullan\u0131c\u0131 se\u00e7in.<\/div>;\n}\n\nfunction App() {\n  const [selectedUserId, setSelectedUserId] = React.useState(1);\n\n  return (\n    <div>\n      <button onClick={() => setSelectedUserId(prev => prev === 10 ? 1 : prev + 1)}>\n        Sonraki Kullan\u0131c\u0131 ({selectedUserId})\n      <\/button>\n      <UserDetails userId={selectedUserId} \/>\n    <\/div>\n  );\n}<\/code><\/pre>\n<p><code>watch: userId<\/code> sayesinde, <code>userId<\/code> prop&#8217;u her de\u011fi\u015fti\u011finde <code>fetchUserDetails<\/code> fonksiyonu otomatik olarak yeniden \u00e7al\u0131\u015ft\u0131r\u0131l\u0131r ve yeni veriler \u00e7ekilir. <code>args<\/code> se\u00e7ene\u011fi ise, <code>promiseFn<\/code>&#8216;e hangi arg\u00fcmanlar\u0131n iletilece\u011fini belirtir.<\/p>\n<h4>4. \u00d6nbelle\u011fe Alma ve Debounce<\/h4>\n<p>*   <strong>\u00d6nbelle\u011fe Alma (Caching):<\/strong> <code>React-Async<\/code>, ayn\u0131 promiseFn ve watch de\u011ferleri i\u00e7in \u00f6nceki ba\u015far\u0131l\u0131 sonu\u00e7lar\u0131 \u00f6nbelle\u011fe alabilir. Bu, ayn\u0131 verinin tekrar tekrar \u00e7ekilmesini \u00f6nler. <code>cache<\/code> prop&#8217;u ile kontrol edilir (<code>true<\/code> varsay\u0131lan olarak, <code>false<\/code> kapat\u0131r veya \u00f6zel bir anahtar).<\/p>\n<pre><code class=\"language-jsx\">\/\/ cache: true (varsay\u0131lan) ile ayn\u0131 promiseFn ve watch i\u00e7in tekrar \u00e7ekmez\n    <Async promiseFn={fetchUsers} cache \/>\n    \/\/ cache: false ile her zaman yeniden \u00e7eker\n    <Async promiseFn={fetchUsers} cache={false} \/>\n    \/\/ \u00d6zel bir anahtar ile \u00f6nbellek kontrol\u00fc\n    <Async promiseFn={fetchUsers} watch={userId} cacheKey={<code>user-${userId}<\/code>} \/><\/code><\/pre>\n<p>*   <strong>Debounce:<\/strong> \u00d6zellikle arama kutular\u0131 gibi h\u0131zl\u0131 kullan\u0131c\u0131 giri\u015flerinde, her tu\u015f vuru\u015funda API \u00e7a\u011fr\u0131s\u0131 yapmak gereksiz y\u00fck olu\u015fturabilir. <code>debounce<\/code> prop&#8217;u, belirli bir s\u00fcre boyunca yeni bir istek gelmedi\u011finde promise&#8217;\u0131n \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flar.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\n    import { useAsync } from 'react-async';\n\n    const searchProducts = async (query) => {\n      if (!query) return [];\n      const response = await fetch(<code>https:\/\/api.example.com\/products?q=${query}<\/code>);\n      return response.json();\n    };\n\n    function ProductSearch() {\n      const [searchTerm, setSearchTerm] = React.useState('');\n      const { data, isLoading, error } = useAsync({\n        deferFn: searchProducts,\n        args: [searchTerm],\n        watch: searchTerm,\n        debounce: 500, \/\/ 500ms gecikme\n      });\n\n      return (\n        <div>\n          <input\n            type=\"text\"\n            value={searchTerm}\n            onChange={(e) => setSearchTerm(e.target.value)}\n            placeholder=\"\u00dcr\u00fcn ara...\"\n          \/>\n          {isLoading && <div>Aran\u0131yor...<\/div>}\n          {error && <div>Hata: {error.message}<\/div>}\n          {data && (\n            <ul>\n              {data.map((product) => (\n                <li key={product.id}>{product.name}<\/li>\n              ))}\n            <\/ul>\n          )}\n        <\/div>\n      );\n    }<\/code><\/pre>\n<p>    Bu \u00f6rnekte, <code>searchTerm<\/code> de\u011fi\u015fti\u011finde <code>searchProducts<\/code> fonksiyonu hemen \u00e7al\u0131\u015fmaz, 500 milisaniye beklenir. Bu s\u00fcre i\u00e7inde <code>searchTerm<\/code> tekrar de\u011fi\u015firse, \u00f6nceki bekleyen \u00e7a\u011fr\u0131 iptal edilir ve yeni bir 500ms&#8217;lik gecikme ba\u015flar.<\/p>\n<h4>5. Hata Y\u00f6netimi ve Tekrar Deneme (Retries)<\/h4>\n<p>A\u011f hatalar\u0131 veya sunucu taraf\u0131ndaki sorunlar nedeniyle API \u00e7a\u011fr\u0131lar\u0131 ba\u015far\u0131s\u0131z olabilir. <code>React-Async<\/code>, bu durumlar\u0131 ele almak i\u00e7in g\u00fc\u00e7l\u00fc mekanizmalar sunar. <code>error<\/code> durumuyla birlikte, <code>retryFn<\/code> prop&#8217;u ile otomatik tekrar deneme mekanizmas\u0131 tan\u0131mlayabiliriz.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { useAsync } from 'react-async';\n\nlet attemptCount = 0; \/\/ Deneme say\u0131s\u0131n\u0131 takip etmek i\u00e7in\nconst unreliableFetch = async () => {\n  attemptCount++;\n  if (attemptCount < 3) {\n    throw new Error(<code>Y\u00fckleme ba\u015far\u0131s\u0131z oldu (Deneme: ${attemptCount})<\/code>);\n  }\n  const response = await fetch('https:\/\/jsonplaceholder.typicode.com\/todos\/1');\n  return response.json();\n};\n\nfunction UnreliableData() {\n  const { data, error, isLoading, reload, isRejected } = useAsync({\n    promiseFn: unreliableFetch,\n    retryFn: (failCount, error) => {\n      \/\/ \u0130lk 3 denemeden sonra dur\n      if (failCount >= 3) return false;\n      \/\/ 1 saniye sonra tekrar dene\n      return 1000;\n    },\n    \/\/ persist: true, hata durumunda bile \u00f6nceki veriyi tutar\n    \/\/ bu sayede kullan\u0131c\u0131 eski veriyi g\u00f6rmeye devam ederken tekrar denemeler yap\u0131l\u0131r\n    persist: true,\n  });\n\n  if (isLoading) return <div>Veri y\u00fckleniyor... (Deneme {attemptCount})<\/div>;\n  if (isRejected)\n    return (\n      <div>\n        Hata: {error.message}{' '}\n        <button onClick={() => { attemptCount = 0; reload(); }}>Manuel Tekrar Dene<\/button>\n      <\/div>\n    );\n  if (data) return <div>Veri ba\u015far\u0131yla y\u00fcklendi: {data.title}<\/div>;\n  return null;\n}<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>unreliableFetch<\/code> fonksiyonu ilk iki \u00e7a\u011fr\u0131da hata f\u0131rlat\u0131r. <code>retryFn<\/code> sayesinde, <code>React-Async<\/code> otomatik olarak 1 saniye bekleyip iste\u011fi yeniden deneyecektir. <code>failCount<\/code> parametresi ka\u00e7 kez ba\u015far\u0131s\u0131z olundu\u011funu g\u00f6sterir. <code>persist: true<\/code> prop&#8217;u, bir hata olu\u015fsa bile <code>data<\/code> state&#8217;inin son ba\u015far\u0131l\u0131 de\u011feri tutmas\u0131n\u0131 sa\u011flar, bu da kullan\u0131c\u0131 deneyimini iyile\u015ftirebilir.<\/p>\n<h4>6. \u0130stekleri \u0130ptal Etme (Aborting Requests)<\/h4>\n<p>\u00d6zellikle tek sayfa uygulamalar\u0131nda, kullan\u0131c\u0131lar bir sayfadan di\u011ferine h\u0131zla ge\u00e7ebilir veya bir i\u015flemi iptal edebilir. Bu durumlarda, devam eden API \u00e7a\u011fr\u0131lar\u0131n\u0131n iptal edilmesi hem gereksiz a\u011f trafi\u011fini \u00f6nler hem de yar\u0131\u015f ko\u015fullar\u0131n\u0131 engeller. <code>useAsync<\/code> hook&#8217;unun d\u00f6nd\u00fcrd\u00fc\u011f\u00fc <code>cancel<\/code> metodu, devam eden bir promise&#8217;\u0131 iptal etmek i\u00e7in kullan\u0131labilir. <code>React-Async<\/code>, dahili olarak <code>AbortController<\/code> API&#8217;sini kullan\u0131r.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { useAsync } from 'react-async';\n\nconst longRunningFetch = async (signal) => {\n  const response = await fetch('https:\/\/api.example.com\/long-task', { signal });\n  if (!response.ok) throw new Error('Uzun s\u00fcren i\u015flem ba\u015far\u0131s\u0131z oldu.');\n  return response.json();\n};\n\nfunction LongTaskComponent() {\n  const { data, error, isLoading, run, cancel, isPending } = useAsync({\n    deferFn: longRunningFetch,\n  });\n\n  React.useEffect(() => {\n    \/\/ Bile\u015fen demonte edildi\u011finde veya ba\u015fka bir nedenle iptal etmek istedi\u011finizde\n    return () => {\n      cancel();\n    };\n  }, [cancel]);\n\n  return (\n    <div>\n      <button onClick={() => run()} disabled={isPending}>\n        {isPending ? '\u0130\u015flem Ba\u015flat\u0131l\u0131yor...' : 'Uzun S\u00fcren \u0130\u015flemi Ba\u015flat'}\n      <\/button>\n      <button onClick={cancel} disabled={!isPending}>\n        \u0130ptal Et\n      <\/button>\n\n      {isLoading && <div>\u0130\u015flem s\u00fcr\u00fcyor...<\/div>}\n      {error && <div>Hata: {error.message}<\/div>}\n      {data && <div>Sonu\u00e7: {JSON.stringify(data)}<\/div>}\n    <\/div>\n  );\n}<\/code><\/pre>\n<p><code>deferFn<\/code> olarak tan\u0131mlanan <code>longRunningFetch<\/code> fonksiyonuna otomatik olarak bir <code>AbortSignal<\/code> objesi ge\u00e7irilir. Bu sinyal, <code>fetch<\/code> API&#8217;sine iletilerek iste\u011fin iptal edilebilir olmas\u0131n\u0131 sa\u011flar. <code>cancel()<\/code> \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda, sinyal tetiklenir ve <code>fetch<\/code> iste\u011fi iptal edilir.<\/p>\n<h4>7. <code>useFetch<\/code> ile Entegrasyon<\/h4>\n<p><code>React-Async<\/code>, <code>fetch<\/code> API&#8217;sini kullanarak veri \u00e7ekme i\u015flemleri i\u00e7in \u00f6zel olarak tasarlanm\u0131\u015f <code>useFetch<\/code> ad\u0131nda bir hook da sunar. Bu hook, <code>useAsync<\/code> \u00fczerine in\u015fa edilmi\u015ftir ve <code>fetch<\/code> API&#8217;sinin tipik kullan\u0131m durumlar\u0131n\u0131 basitle\u015ftirir.<\/p>\n<pre><code class=\"language-jsx\">import React from 'react';\nimport { useFetch } from 'react-async';\n\nfunction GitHubUser({ username }) {\n  const { data, error, isLoading } = useFetch(<code>https:\/\/api.github.com\/users\/${username}<\/code>, {\n    watch: username, \/\/ username de\u011fi\u015fti\u011finde yeniden \u00e7ek\n  });\n\n  if (isLoading) return <div>Kullan\u0131c\u0131 {username} y\u00fckleniyor...<\/div>;\n  if (error) return <div>Hata: {error.message}<\/div>;\n  if (data)\n    return (\n      <div>\n        <h3>{data.name} ({data.login})<\/h3>\n        <img src={data.avatar_url} alt={data.login} width=\"100\" \/>\n        <p>Takip\u00e7i: {data.followers}<\/p>\n        <p>Repo Say\u0131s\u0131: {data.public_repos}<\/p>\n      <\/div>\n    );\n  return null;\n}\n\nfunction AppWithGitHub() {\n  const [user, setUser] = React.useState('gaearon');\n  return (\n    <div>\n      <input\n        type=\"text\"\n        value={user}\n        onChange={(e) => setUser(e.target.value)}\n        placeholder=\"GitHub kullan\u0131c\u0131 ad\u0131\"\n      \/>\n      <GitHubUser username={user} \/>\n    <\/div>\n  );\n}<\/code><\/pre>\n<p><code>useFetch<\/code> hook&#8217;u, do\u011frudan bir URL ve iste\u011fe ba\u011fl\u0131 <code>RequestInit<\/code> (fetch API se\u00e7enekleri) nesnesi al\u0131r. <code>watch<\/code> se\u00e7ene\u011fi, URL&#8217;deki ba\u011f\u0131ml\u0131l\u0131klar\u0131 izlemek i\u00e7in hala kullan\u0131labilir.<\/p>\n<h4>8. Sunucu Tarafl\u0131 \u0130\u015fleme (SSR)<\/h4>\n<p><code>React-Async<\/code>, sunucu tarafl\u0131 i\u015fleme (Server-Side Rendering &#8211; SSR) senaryolar\u0131nda da kullan\u0131labilir. Bu, uygulaman\u0131n ilk y\u00fcklemesinde daha iyi performans ve SEO sa\u011flamak i\u00e7in sunucuda veri \u00e7ekme ve HTML&#8217;i \u00f6nceden olu\u015fturma anlam\u0131na gelir.<\/p>\n<p><code>React-Async<\/code> ile SSR yapmak i\u00e7in genellikle \u015fu ad\u0131mlar izlenir:<\/p>\n<p>1.  Sunucuda, bile\u015fen a\u011fac\u0131n\u0131z\u0131 render etmeden \u00f6nce <code>Async.preload()<\/code> veya <code>Async.initialState()<\/code> gibi y\u00f6ntemler kullanarak gerekli verileri \u00f6nceden \u00e7ekin.<br \/>\n2.  \u00c7ekilen verileri <code>initialState<\/code> olarak istemciye g\u00f6nderin (genellikle <code><script><\/code> etiketi i\u00e7inde JSON olarak).<br \/>\n3.  \u0130stemcide, <code>Async.initialState<\/code>'i kullanarak \u00f6nceden \u00e7ekilmi\u015f verileri <code>React-Async<\/code>'e sa\u011flay\u0131n, b\u00f6ylece bile\u015fenler ilk render'da veri \u00e7ekmek zorunda kalmaz ve hidrasyon sorunsuz ger\u00e7ekle\u015fir.<\/p>\n<p>Bu, daha karma\u015f\u0131k bir konu oldu\u011fundan, burada sadece bir giri\u015f yap\u0131lm\u0131\u015ft\u0131r. Detayl\u0131 bir SSR kurulumu i\u00e7in <code>React-Async<\/code>'in d\u00f6k\u00fcmantasyonuna ba\u015fvurmak \u00f6nemlidir.<\/p>\n<h4>9. TypeScript ile Tip G\u00fcvenli\u011fi<\/h4>\n<p><code>React-Async<\/code>, TypeScript ile tam uyumludur ve g\u00fc\u00e7l\u00fc tip \u00e7\u0131kar\u0131m\u0131 sa\u011flar. <code>useAsync<\/code> hook'unu veya <code><Async><\/code> bile\u015fenini kullan\u0131rken, \u00e7ekilen verinin tipini belirterek kodunuzu daha g\u00fcvenli hale getirebilirsiniz.<\/p>\n<pre><code class=\"language-typescript\">import React from 'react';\nimport { useAsync } from 'react-async';\n\ninterface User {\n  id: number;\n  name: string;\n  email: string;\n}\n\nconst fetchUserById = async (userId: number): Promise<User> => {\n  const response = await fetch(<code>https:\/\/jsonplaceholder.typicode.com\/users\/${userId}<\/code>);\n  if (!response.ok) throw new Error('Kullan\u0131c\u0131 bulunamad\u0131.');\n  return response.json();\n};\n\nfunction TypedUserDetails({ userId }: { userId: number }) {\n  \/\/ useAsync<User> ile d\u00f6nen data'n\u0131n tipini belirtiyoruz\n  const { data, error, isLoading } = useAsync<User>({\n    promiseFn: fetchUserById,\n    args: [userId],\n    watch: userId,\n  });\n\n  if (isLoading) return <div>Y\u00fckleniyor...<\/div>;\n  if (error) return <div>Hata: {error.message}<\/div>;\n  if (data)\n    return (\n      <div>\n        <h3>{data.name}<\/h3>\n        <p>{data.email}<\/p>\n      <\/div>\n    );\n  return null;\n}<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>useAsync<User><\/code> kullanarak <code>data<\/code> de\u011fi\u015fkeninin <code>User<\/code> tipinde olaca\u011f\u0131n\u0131 belirtiyoruz. Bu, kod yazarken otomatik tamamlama ve derleme zaman\u0131 kontrolleri gibi avantajlar sa\u011flar.<\/p>\n<h3>Di\u011fer \u00c7\u00f6z\u00fcmlerle Kar\u015f\u0131la\u015ft\u0131rma<\/h3>\n<p>React ekosisteminde veri \u00e7ekme i\u00e7in bir\u00e7ok farkl\u0131 k\u00fct\u00fcphane ve yakla\u015f\u0131m bulunmaktad\u0131r. <code>React-Async<\/code>'i di\u011ferleriyle kar\u015f\u0131la\u015ft\u0131rmak, ne zaman kullan\u0131laca\u011f\u0131na dair daha iyi bir fikir verecektir.<\/p>\n<p>*   <strong><code>useEffect<\/code> + <code>useState<\/code>:<\/strong> Bu temel React hook'lar\u0131, basit veri \u00e7ekme senaryolar\u0131 i\u00e7in yeterlidir. Ancak yukar\u0131da belirtildi\u011fi gibi, karma\u015f\u0131k durum y\u00f6netimi, yar\u0131\u015f ko\u015fullar\u0131, \u00f6nbelle\u011fe alma, tekrar deneme gibi ihtiya\u00e7lar ortaya \u00e7\u0131kt\u0131\u011f\u0131nda h\u0131zla karma\u015f\u0131kla\u015f\u0131r ve manuel y\u00f6netim gerektirir. <code>React-Async<\/code>, bu boilerplate kodu azaltarak daha deklaratif bir \u00e7\u00f6z\u00fcm sunar.<\/p>\n<p>*   <strong><code>React Query<\/code> (TanStack Query) \/ <code>SWR<\/code>:<\/strong> Bu k\u00fct\u00fcphaneler, <code>React-Async<\/code>'e g\u00f6re daha \"full-featured\" veri \u00e7ekme ve \u00f6nbelle\u011fe alma \u00e7\u00f6z\u00fcmleridir. Otomatik yeniden do\u011frulama (revalidation), global \u00f6nbellek y\u00f6netimi, mutasyonlar, optimistik g\u00fcncellemeler gibi geli\u015fmi\u015f \u00f6zellikler sunarlar. Genellikle uygulaman\u0131z genelinde kapsaml\u0131 bir veri y\u00f6netim stratejisi ar\u0131yorsan\u0131z tercih edilirler. <code>React-Async<\/code>, daha \u00e7ok bile\u015fen d\u00fczeyinde asenkron durum y\u00f6netimi i\u00e7in hafif bir primitif olarak d\u00fc\u015f\u00fcn\u00fclebilir. E\u011fer global bir \u00f6nbelle\u011fe ihtiyac\u0131n\u0131z yoksa veya kendi \u00f6nbellek mant\u0131\u011f\u0131n\u0131z\u0131 daha ince ayarl\u0131 bir \u015fekilde y\u00f6netmek istiyorsan\u0131z <code>React-Async<\/code> daha uygun olabilir.<\/p>\n<p>*   <strong><code>Redux Saga<\/code> \/ <code>Redux Thunk<\/code>:<\/strong> Bu k\u00fct\u00fcphaneler, Redux ile birlikte global durum y\u00f6netimi i\u00e7in asenkron yan etkileri y\u00f6netmek \u00fczere tasarlanm\u0131\u015ft\u0131r. Genellikle daha b\u00fcy\u00fck ve karma\u015f\u0131k uygulamalarda, asenkron i\u015flemleri merkezi bir yerde y\u00f6netmek ve uygulaman\u0131n genel durumunu etkilemek gerekti\u011finde kullan\u0131l\u0131rlar. <code>React-Async<\/code>, bile\u015fen d\u00fczeyinde odaklan\u0131rken, Redux eklentileri daha \u00e7ok global uygulama durumuyla ilgilenir.<\/p>\n<p><strong>Ne Zaman <code>React-Async<\/code> Se\u00e7ilmeli?<\/strong><\/p>\n<p>*   <strong>Bile\u015fen D\u00fczeyinde Asenkron Mant\u0131k:<\/strong> Bir bile\u015fenin kendi i\u00e7inde veri \u00e7ekme veya di\u011fer asenkron i\u015flemleri y\u00f6netmesi gerekti\u011finde.<br \/>\n*   <strong>Hafif ve Esnek \u00c7\u00f6z\u00fcm:<\/strong> Uygulaman\u0131z\u0131n her yerinde global bir \u00f6nbelle\u011fe alma veya otomatik yeniden do\u011frulama gibi karma\u015f\u0131k \u00f6zelliklere ihtiyac\u0131n\u0131z yoksa.<br \/>\n*   <strong>Deklaratif Yakla\u015f\u0131m:<\/strong> Asenkron i\u015flemleri React'in deklaratif do\u011fas\u0131na uygun bir \u015fekilde, <code>useEffect<\/code> karma\u015fas\u0131ndan ka\u00e7\u0131narak y\u00f6netmek istedi\u011finizde.<br \/>\n*   <strong>\u0130nce Ayarl\u0131 Kontrol:<\/strong> Promise ya\u015fam d\u00f6ng\u00fcs\u00fc, \u00f6nbellekleme, tekrar deneme ve iptal etme \u00fczerinde daha do\u011frudan ve ince ayarl\u0131 kontrol istedi\u011finizde.<br \/>\n*   <strong>Yap\u0131 Ta\u015f\u0131:<\/strong> Daha b\u00fcy\u00fck bir veri y\u00f6netim stratejisinin bir par\u00e7as\u0131 olarak, temel bir asenkron durum y\u00f6netim primitifi olarak kullanmak istedi\u011finizde.<\/p>\n<h3>Ger\u00e7ek D\u00fcnya Kullan\u0131m Senaryolar\u0131<\/h3>\n<p><code>React-Async<\/code>, bir\u00e7ok farkl\u0131 ger\u00e7ek d\u00fcnya senaryosunda de\u011ferli bir ara\u00e7 olabilir:<\/p>\n<p>*   <strong>Kullan\u0131c\u0131 Profilleri ve Kontrol Panelleri:<\/strong> Kullan\u0131c\u0131ya \u00f6zel verileri (profil bilgileri, g\u00f6nderileri, sipari\u015fleri vb.) \u00e7ekmek ve bunlar\u0131 dinamik olarak g\u00f6r\u00fcnt\u00fclemek.<br \/>\n*   <strong>Arama Bile\u015fenleri:<\/strong> Kullan\u0131c\u0131n\u0131n yazd\u0131\u011f\u0131 sorguya g\u00f6re API'den sonu\u00e7lar\u0131 \u00e7ekmek, <code>debounce<\/code> \u00f6zelli\u011fi ile gereksiz \u00e7a\u011fr\u0131lar\u0131 \u00f6nlemek.<br \/>\n*   <strong>Form G\u00f6nderimleri:<\/strong> Bir form g\u00f6nderildi\u011finde API'ye veri g\u00f6ndermek, y\u00fckleme durumunu g\u00f6stermek, ba\u015far\u0131 veya hata mesajlar\u0131n\u0131 g\u00f6r\u00fcnt\u00fclemek.<br \/>\n*   <strong>Veri Tablolar\u0131 ve Listeler:<\/strong> Sayfaland\u0131rma, s\u0131ralama veya filtreleme gibi parametreler de\u011fi\u015fti\u011finde verileri yeniden \u00e7ekmek.<br \/>\n*   <strong>Lazy Loading Bile\u015fenleri:<\/strong> Bir bile\u015fenin i\u00e7eri\u011fi ancak belirli bir ko\u015ful kar\u015f\u0131land\u0131\u011f\u0131nda veya bir API \u00e7a\u011fr\u0131s\u0131 tamamland\u0131\u011f\u0131nda y\u00fcklenecekse.<br \/>\n*   <strong>G\u00f6rselle\u015ftirme ve Grafikler:<\/strong> Dinamik olarak g\u00fcncellenen grafikler i\u00e7in veri \u00e7ekmek.<\/p>\n<h3>React-Async'in Art\u0131lar\u0131 ve Eksileri<\/h3>\n<p><strong>Art\u0131lar\u0131:<\/strong><\/p>\n<p>*   <strong>Deklaratif API:<\/strong> Asenkron mant\u0131\u011f\u0131, React'in do\u011fas\u0131na uygun bir \u015fekilde tan\u0131mlar.<br \/>\n*   <strong>Esneklik:<\/strong> Hem render props hem de Hooks API'si sunar, herhangi bir promise tabanl\u0131 i\u015flemi y\u00f6netebilir.<br \/>\n*   <strong>Otomatik Durum Y\u00f6netimi:<\/strong> Y\u00fckleme, hata ve ba\u015far\u0131 durumlar\u0131n\u0131 otomatik olarak izler, boilerplate kodu azalt\u0131r.<br \/>\n*   <strong>Zengin \u00d6zellik Seti:<\/strong> \u00d6nbelle\u011fe alma, debounce, tekrar deneme, istek iptali gibi bir\u00e7ok yerle\u015fik \u00f6zellik sunar.<br \/>\n*   <strong>Hafif:<\/strong> K\u00fc\u00e7\u00fck boyutlu bir k\u00fct\u00fcphanedir, uygulamaya fazla y\u00fck getirmez.<br \/>\n*   <strong>\u0130yi TypeScript Deste\u011fi:<\/strong> Tip g\u00fcvenli\u011fi sa\u011flar.<br \/>\n*   <strong>SSR Deste\u011fi:<\/strong> Sunucu tarafl\u0131 i\u015fleme i\u00e7in entegrasyon kolayl\u0131\u011f\u0131 sunar.<br \/>\n*   <strong>Test Edilebilir:<\/strong> Asenkron mant\u0131\u011f\u0131 bile\u015fenlerden ay\u0131rarak daha kolay test edilebilir kod yazmaya te\u015fvik eder.<\/p>\n<p><strong>Eksileri:<\/strong><\/p>\n<p>*   <strong>Global \u00d6nbellek Y\u00f6netimi Yok:<\/strong> <code>React Query<\/code> veya <code>SWR<\/code> gibi k\u00fct\u00fcphanelerin sundu\u011fu global, otomatik yeniden do\u011frulayan bir \u00f6nbellek mekanizmas\u0131na sahip de\u011fildir. Bu t\u00fcr ihtiya\u00e7lar i\u00e7in manuel y\u00f6netim veya farkl\u0131 bir k\u00fct\u00fcphane gerekebilir.<br \/>\n*   <strong>Daha Az Fikir Sahibi:<\/strong> Belirli bir veri \u00e7ekme stratejisi dayatmaz, bu da bazen geli\u015ftiricinin daha fazla karar vermesini gerektirebilir.<br \/>\n*   <strong>Karma\u015f\u0131k Global Senaryolar \u0130\u00e7in Yetersiz:<\/strong> Uygulama genelinde payla\u015f\u0131lan, karma\u015f\u0131k ve s\u00fcrekli g\u00fcncellenen veri durumlar\u0131 i\u00e7in tek ba\u015f\u0131na yeterli olmayabilir, bu durumda Redux gibi durum y\u00f6netim k\u00fct\u00fcphaneleriyle birlikte kullan\u0131lmas\u0131 gerekebilir.<\/p>\n<h3>Sonu\u00e7<\/h3>\n<p><code>React-Async<\/code> k\u00fct\u00fcphanesi, modern React uygulamalar\u0131nda asenkron i\u015flemleri y\u00f6netmek i\u00e7in g\u00fc\u00e7l\u00fc, esnek ve deklaratif bir \u00e7\u00f6z\u00fcm sunar. <code>useEffect<\/code> ve <code>useState<\/code> ile manuel olarak y\u00f6netilen asenkron mant\u0131\u011f\u0131n getirdi\u011fi karma\u015f\u0131kl\u0131\u011f\u0131 ortadan kald\u0131rarak, geli\u015ftiricilerin daha temiz, daha okunabilir ve daha s\u00fcrd\u00fcr\u00fclebilir kod yazmas\u0131na olanak tan\u0131r. \u00d6nbelle\u011fe alma, debounce, tekrar deneme ve istek iptali gibi yerle\u015fik \u00f6zellikleriyle, veri \u00e7ekme ile ilgili yayg\u0131n sorunlara zarif \u00e7\u00f6z\u00fcmler sunar.<\/p>\n<p>Uygulaman\u0131z\u0131n veri \u00e7ekme ihtiya\u00e7lar\u0131, bile\u015fen d\u00fczeyinde asenkron durum y\u00f6netimine odaklan\u0131yorsa ve tam te\u015fekk\u00fcll\u00fc bir global veri \u00f6nbelle\u011fi \u00e7\u00f6z\u00fcm\u00fcne hemen ihtiyac\u0131n\u0131z yoksa, <code>React-Async<\/code> m\u00fckemmel bir se\u00e7imdir. React'in deklaratif felsefesiyle uyumlu \u00e7al\u0131\u015farak, asenkron i\u015flemleri de UI gibi do\u011fal bir par\u00e7as\u0131 haline getirir. Bu k\u00fct\u00fcphaneyi projelerinize dahil ederek, React uygulamalar\u0131n\u0131zdaki veri \u00e7ekme deneyiminizi \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftirebilir ve daha sa\u011flam, performansl\u0131 uygulamalar geli\u015ftirebilirsiniz.<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"React-Async K\u00fct\u00fcphanesi ile Deklaratif Veri \u00c7ekme: Modern React Uygulamalar\u0131nda Asenkron \u0130\u015flemleri Y\u00f6netmek\nReact uygulamalar\u0131 geli\u015ftirirken","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[128],"tags":[],"class_list":{"0":"post-38372","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-react","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - 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