{"id":31142,"date":"2025-10-06T08:41:02","date_gmt":"2025-10-06T05:41:02","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=31142"},"modified":"2025-10-06T08:41:02","modified_gmt":"2025-10-06T05:41:02","slug":"ionic-2-uygulamalarinda-veri-depolama-kapsamli-bir-rehber","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/ionic-2-uygulamalarinda-veri-depolama-kapsamli-bir-rehber\/","title":{"rendered":"Ionic 2+ Uygulamalar\u0131nda Veri Depolama: Kapsaml\u0131 Bir Rehber"},"content":{"rendered":"

<\/p>\n

Ionic 2+ Uygulamalar\u0131nda Veri Depolama: Kapsaml\u0131 Bir Rehber<\/h2>\n

Mobil uygulama geli\u015ftirirken, kullan\u0131c\u0131 deneyimini zenginle\u015ftirmek ve uygulaman\u0131n i\u015flevselli\u011fini art\u0131rmak i\u00e7in verileri etkin bir \u015fekilde y\u00f6netmek kritik \u00f6neme sahiptir. Ionic, web teknolojilerini kullanarak platformlar aras\u0131 uygulamalar geli\u015ftirmeye olanak tan\u0131yan pop\u00fcler bir \u00e7er\u00e7eve oldu\u011fundan, bu uygulamalar\u0131n veri depolama ihtiya\u00e7lar\u0131 da web ve mobil ekosistemlerinin birle\u015fimiyle \u015fekillenir. Bu makalede, Ionic 2 ve \u00fczeri versiyonlarda veri depolama se\u00e7eneklerini, bu se\u00e7eneklerin avantajlar\u0131n\u0131, dezavantajlar\u0131n\u0131 ve hangi senaryolarda kullan\u0131lmas\u0131 gerekti\u011fini detayl\u0131 bir \u015fekilde inceleyece\u011fiz.<\/p>\n

Neden Depolama Kullanmal\u0131y\u0131z?<\/h3>\n

Uygulamalar\u0131m\u0131zda veri depolama ihtiyac\u0131, genellikle a\u015fa\u011f\u0131daki temel nedenlerden kaynaklan\u0131r:<\/p>\n

* Kullan\u0131c\u0131 Tercihleri ve Ayarlar\u0131:<\/strong> Uygulaman\u0131n temas\u0131, dil se\u00e7imi, bildirim tercihleri gibi kullan\u0131c\u0131ya \u00f6zel ayarlar\u0131n kaydedilmesi, uygulaman\u0131n her a\u00e7\u0131l\u0131\u015f\u0131nda bu ayarlar\u0131n yeniden yap\u0131lmas\u0131n\u0131 engeller ve ki\u015fiselle\u015ftirilmi\u015f bir deneyim sunar.
\n* Oturum Y\u00f6netimi:<\/strong> Kullan\u0131c\u0131 giri\u015f bilgilerini (\u00f6rne\u011fin, JWT token’lar\u0131 veya oturum kimlikleri) depolamak, kullan\u0131c\u0131n\u0131n her uygulama a\u00e7\u0131l\u0131\u015f\u0131nda yeniden giri\u015f yapmas\u0131n\u0131 \u00f6nler. Bu, kullan\u0131c\u0131 deneyimini \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftirir ve uygulaman\u0131n ba\u011fl\u0131 oldu\u011fu API’larla g\u00fcvenli bir \u015fekilde ileti\u015fim kurmas\u0131n\u0131 sa\u011flar.
\n* \u00c7evrimd\u0131\u015f\u0131 Eri\u015fim ve \u00d6nbellekleme:<\/strong> Mobil uygulamalar\u0131n her zaman internet ba\u011flant\u0131s\u0131na sahip olmayabilece\u011fi g\u00f6z \u00f6n\u00fcnde bulunduruldu\u011funda, \u00e7evrimd\u0131\u015f\u0131 \u00e7al\u0131\u015fma yetene\u011fi hayati \u00f6nem ta\u015f\u0131r. S\u0131k\u00e7a eri\u015filen verileri (\u00fcr\u00fcn listeleri, haber makaleleri, kullan\u0131c\u0131 profilleri vb.) yerel olarak \u00f6nbelle\u011fe almak, uygulaman\u0131n internet ba\u011flant\u0131s\u0131 olmad\u0131\u011f\u0131nda bile temel i\u015flevlerini yerine getirmesine olanak tan\u0131r. Ayr\u0131ca, bu durum veri y\u00fckleme s\u00fcrelerini k\u0131saltarak performans\u0131 art\u0131r\u0131r.
\n* Performans \u0130yile\u015ftirmesi:<\/strong> Sunucudan her seferinde veri \u00e7ekmek yerine, s\u0131k kullan\u0131lan verileri yerel olarak depolamak, uygulaman\u0131n daha h\u0131zl\u0131 yan\u0131t vermesini sa\u011flar. Bu, \u00f6zellikle b\u00fcy\u00fck veri setleriyle \u00e7al\u0131\u015fan veya yava\u015f internet ba\u011flant\u0131s\u0131 olan kullan\u0131c\u0131lar i\u00e7in kritik bir performans art\u0131\u015f\u0131 sunar.
\n* Form Verilerini Kaydetme:<\/strong> Kullan\u0131c\u0131lar\u0131n doldurdu\u011fu uzun formlar\u0131n verilerini taslak olarak kaydetmek, uygulaman\u0131n beklenmedik bir \u015fekilde kapanmas\u0131 veya kullan\u0131c\u0131n\u0131n ba\u015fka bir ekrana gitmesi durumunda verilerin kaybolmas\u0131n\u0131 engeller.<\/p>\n

Bu ihtiya\u00e7lar do\u011frultusunda, Ionic geli\u015ftiricileri i\u00e7in \u00e7e\u015fitli depolama mekanizmalar\u0131 mevcuttur. Do\u011fru depolama \u00e7\u00f6z\u00fcm\u00fcn\u00fc se\u00e7mek, uygulaman\u0131n \u00f6l\u00e7eklenebilirli\u011fi, performans\u0131 ve g\u00fcvenli\u011fi a\u00e7\u0131s\u0131ndan b\u00fcy\u00fck \u00f6nem ta\u015f\u0131r.<\/p>\n

Ionic’in Sundu\u011fu Depolama Mekanizmalar\u0131<\/h3>\n

Ionic uygulamalar\u0131, temelinde bir web g\u00f6r\u00fcn\u00fcm\u00fc (WebView) \u00fczerinde \u00e7al\u0131\u015ft\u0131\u011f\u0131 i\u00e7in hem web’e \u00f6zg\u00fc depolama API’lar\u0131na hem de Cordova\/Capacitor eklentileri arac\u0131l\u0131\u011f\u0131yla platforma \u00f6zg\u00fc (native) depolama \u00e7\u00f6z\u00fcmlerine eri\u015febilir.<\/p>\n

Ionic Storage<\/h4>\n

Ionic ekibinin \u00f6nerdi\u011fi ve genellikle ilk tercih olmas\u0131 gereken bir depolama \u00e7\u00f6z\u00fcm\u00fcd\u00fcr. Ionic Storage<\/code>, farkl\u0131 depolama mekanizmalar\u0131n\u0131 tek bir soyutlama katman\u0131 alt\u0131nda birle\u015ftirerek geli\u015ftiricilere kolay ve tutarl\u0131 bir API sunar.<\/p>\n

Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h5>\n

Ionic Storage<\/code>, verileri depolamak i\u00e7in arka planda a\u015fa\u011f\u0131daki depolama mekanizmalar\u0131n\u0131 \u00f6ncelik s\u0131ras\u0131na g\u00f6re kullan\u0131r:<\/p>\n

1. IndexedDB:<\/strong> Taray\u0131c\u0131 tabanl\u0131, b\u00fcy\u00fck miktarda yap\u0131sal veri depolamak i\u00e7in tasarlanm\u0131\u015f NoSQL bir veritaban\u0131d\u0131r. Asenkron \u00e7al\u0131\u015f\u0131r.
\n2. WebSQL:<\/strong> IndexedDB’ye benzer \u015fekilde b\u00fcy\u00fck miktarda veri depolamak i\u00e7in kullan\u0131l\u0131r ancak standart d\u0131\u015f\u0131 kalm\u0131\u015f ve modern taray\u0131c\u0131larda kullan\u0131m\u0131 tavsiye edilmemektedir.
\n3. LocalStorage:<\/strong> Taray\u0131c\u0131 tabanl\u0131, anahtar-de\u011fer \u00e7iftleri \u015feklinde veri depolayan basit bir mekanizmad\u0131r. Senkron \u00e7al\u0131\u015f\u0131r ve depolama alan\u0131 s\u0131n\u0131rl\u0131d\u0131r (genellikle 5-10 MB).
\n4. Filesystem (Native):<\/strong> E\u011fer uygulama bir mobil cihazda \u00e7al\u0131\u015f\u0131yorsa ve yukar\u0131daki se\u00e7enekler kullan\u0131lamazsa, dosyalar\u0131 do\u011frudan cihaz\u0131n dosya sistemine kaydetme yetene\u011fi sunar. Bu genellikle Cordova\/Capacitor File eklentisi arac\u0131l\u0131\u011f\u0131yla ger\u00e7ekle\u015fir.<\/p>\n

Ionic Storage<\/code> bu mekanizmalar\u0131 ak\u0131ll\u0131ca kullanarak, uygulaman\u0131n \u00e7al\u0131\u015ft\u0131\u011f\u0131 ortama (taray\u0131c\u0131, iOS, Android) g\u00f6re en uygun ve performant depolama \u00e7\u00f6z\u00fcm\u00fcn\u00fc otomatik olarak se\u00e7er. Bu sayede geli\u015ftiriciler, farkl\u0131 platformlar i\u00e7in ayr\u0131 ayr\u0131 depolama kodlar\u0131 yazmak zorunda kalmazlar. T\u00fcm i\u015flemler Promise tabanl\u0131 ve asenkrondur, bu da uygulaman\u0131n kullan\u0131c\u0131 aray\u00fcz\u00fcn\u00fcn donmas\u0131n\u0131 engeller.<\/p>\n

Kurulum ve Temel Kullan\u0131m<\/h5>\n

Ionic Storage<\/code>‘\u0131 projenize eklemek olduk\u00e7a basittir:<\/p>\n

npm install @ionic\/storage-angular\nionic cap sync<\/code><\/pre>\n
Ard\u0131ndan, uygulaman\u0131z\u0131n ana mod\u00fcl\u00fcnde (app.module.ts<\/code> veya main.ts<\/code> standalone components i\u00e7in) IonicStorageModule<\/code>‘\u00fc import edip imports<\/code> dizisine eklemeniz gerekir:<\/p>\n
app.module.ts<\/code> i\u00e7in:<\/strong><\/p>\n
import { NgModule } from '@angular\/core';\nimport { BrowserModule } from '@angular\/platform-browser';\nimport { RouteReuseStrategy } from '@angular\/router';\n\nimport { IonicModule, IonicRouteStrategy } from '@ionic\/angular';\nimport { IonicStorageModule } from '@ionic\/storage-angular'; \/\/ Import Storage Module\n\nimport { AppComponent } from '.\/app.component';\nimport { AppRoutingModule } from '.\/app-routing.module';\nimport * as CordovaSQLiteDriver from 'localforage-cordovasqlitedriver';\nimport * as LocalForage from 'localforage';\n\n@NgModule({\n  declarations: [AppComponent],\n  imports: [\n    BrowserModule,\n    IonicModule.forRoot(),\n    AppRoutingModule,\n    IonicStorageModule.forRoot({\n      name: '__mydb', \/\/ Opsiyonel: Veritaban\u0131 ad\u0131\n      driverOrder: [CordovaSQLiteDriver._driver, LocalForage.INDEXEDDB, LocalForage.WEBSQL, LocalForage.LOCALSTORAGE]\n    })\n  ],\n  providers: [{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy }],\n  bootstrap: [AppComponent],\n})\nexport class AppModule {}<\/code><\/pre>\n
Yukar\u0131daki \u00f6rnekte driverOrder<\/code> ile s\u00fcr\u00fcc\u00fclerin \u00f6ncelik s\u0131ras\u0131n\u0131 belirleyebiliriz. \u00d6zellikle Capacitor\/Cordova ile SQLite driver kullanmak isterseniz bu \u00f6nemlidir.<\/p>\n
Standalone Componentler i\u00e7in (main.ts<\/code>):<\/strong><\/p>\n
import { enableProdMode, importProvidersFrom } from '@angular\/core';\nimport { bootstrapApplication } from '@angular\/platform-browser';\nimport { RouteReuseStrategy, provideRouter } from '@angular\/router';\nimport { IonicModule, IonicRouteStrategy } from '@ionic\/angular';\nimport { IonicStorageModule } from '@ionic\/storage-angular';\n\nimport { routes } from '.\/app\/app.routes';\nimport { AppComponent } from '.\/app\/app.component';\nimport { environment } from '.\/environments\/environment';\n\nif (environment.production) {\n  enableProdMode();\n}\n\nbootstrapApplication(AppComponent, {\n  providers: [\n    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy },\n    importProvidersFrom(IonicModule.forRoot(), IonicStorageModule.forRoot()),\n    provideRouter(routes),\n  ],\n});<\/code><\/pre>\n
Bir bile\u015fen veya serviste Storage<\/code>‘\u0131 kullanmak i\u00e7in onu enjekte etmeniz gerekir:<\/p>\n
import { Injectable } from '@angular\/core';\nimport { Storage } from '@ionic\/storage-angular';\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class StorageService {\n  private _storage: Storage | null = null;\n\n  constructor(private storage: Storage) {\n    this.init();\n  }\n\n  async init() {\n    \/\/ create storage instance\n    const storage = await this.storage.create();\n    this._storage = storage;\n  }\n\n  \/\/ Veri kaydetme\n  public async set(key: string, value: any): Promise {\n    if (this._storage) {\n      return await this._storage.set(key, value);\n    }\n    throw new Error('Storage not initialized.');\n  }\n\n  \/\/ Veri okuma\n  public async get(key: string): Promise {\n    if (this._storage) {\n      return await this._storage.get(key);\n    }\n    throw new Error('Storage not initialized.');\n  }\n\n  \/\/ Veri silme\n  public async remove(key: string): Promise {\n    if (this._storage) {\n      return await this._storage.remove(key);\n    }\n    throw new Error('Storage not initialized.');\n  }\n\n  \/\/ T\u00fcm verileri silme\n  public async clear(): Promise {\n    if (this._storage) {\n      return await this._storage.clear();\n    }\n    throw new Error('Storage not initialized.');\n  }\n\n  \/\/ T\u00fcm anahtarlar\u0131 alma\n  public async keys(): Promise {\n    if (this._storage) {\n      return await this._storage.keys();\n    }\n    throw new Error('Storage not initialized.');\n  }\n\n  \/\/ Kaydedilmi\u015f eleman say\u0131s\u0131n\u0131 alma\n  public async length(): Promise {\n    if (this._storage) {\n      return await this._storage.length();\n    }\n    throw new Error('Storage not initialized.');\n  }\n}<\/code><\/pre>\n
Bu StorageService<\/code>‘i herhangi bir component’te enjekte ederek kullanabilirsiniz:<\/p>\n
import { Component, OnInit } from '@angular\/core';\nimport { StorageService } from '..\/services\/storage.service';\n\n@Component({\n  selector: 'app-home',\n  templateUrl: 'home.page.html',\n  styleUrls: ['home.page.scss'],\n})\nexport class HomePage implements OnInit {\n  userName: string = '';\n  theme: string = 'light';\n\n  constructor(private storageService: StorageService) {}\n\n  async ngOnInit() {\n    \/\/ Kaydedilmi\u015f kullan\u0131c\u0131 ad\u0131n\u0131 oku\n    const name = await this.storageService.get('userName');\n    if (name) {\n      this.userName = name;\n    }\n\n    \/\/ Kaydedilmi\u015f tema ayar\u0131n\u0131 oku\n    const savedTheme = await this.storageService.get('appTheme');\n    if (savedTheme) {\n      this.theme = savedTheme;\n      document.body.setAttribute('color-theme', this.theme);\n    }\n  }\n\n  async saveUserName() {\n    await this.storageService.set('userName', this.userName);\n    console.log('Kullan\u0131c\u0131 ad\u0131 kaydedildi:', this.userName);\n  }\n\n  async toggleTheme() {\n    this.theme = this.theme === 'light' ? 'dark' : 'light';\n    await this.storageService.set('appTheme', this.theme);\n    document.body.setAttribute('color-theme', this.theme);\n    console.log('Tema de\u011fi\u015ftirildi:', this.theme);\n  }\n}<\/code><\/pre>\n
Ionic Storage<\/code> \u00e7o\u011fu uygulama i\u00e7in yeterli ve \u00f6nerilen bir \u00e7\u00f6z\u00fcmd\u00fcr.<\/p>\n
Native Storage (Capacitor\/Cordova Plugins)<\/h4>\n
Baz\u0131 durumlarda, Ionic Storage<\/code>‘\u0131n sundu\u011fu soyutlama yeterli olmayabilir veya daha spesifik ihtiya\u00e7lar do\u011fabilir. Bu noktada, Capacitor veya Cordova eklentileri arac\u0131l\u0131\u011f\u0131yla platforma \u00f6zg\u00fc depolama \u00e7\u00f6z\u00fcmlerine ba\u015fvurulur.<\/p>\n
Neden Tercih Edilir?<\/h5>\n
*   G\u00fcvenlik:<\/strong> Hassas veriler (\u00f6rne\u011fin, \u015fifreler, API anahtarlar\u0131) i\u00e7in Ionic Secure Storage<\/code> gibi eklentiler, verileri cihaz\u0131n donan\u0131m destekli \u015fifreleme mekanizmalar\u0131n\u0131 kullanarak daha g\u00fcvenli bir \u015fekilde depolar.
\n*   Performans ve Kapasite:<\/strong> \u00d6zellikle b\u00fcy\u00fck, yap\u0131sal veri setleri i\u00e7in SQLite gibi ger\u00e7ek bir ili\u015fkisel veritaban\u0131 kullanmak, daha karma\u015f\u0131k sorgulara ve daha iyi performansa olanak tan\u0131r. Ionic Storage<\/code>‘\u0131n kulland\u0131\u011f\u0131 IndexedDB veya WebSQL’in \u00f6tesine ge\u00e7ebilir.
\n*   \u00d6zel Gereksinimler:<\/strong> Baz\u0131 i\u015f mant\u0131klar\u0131, do\u011frudan dosya sistemi eri\u015fimi veya belirli bir veritaban\u0131 motorunun \u00f6zelliklerini gerektirebilir.<\/p>\n
\u00d6rnekler<\/h5>\n
*   Capacitor Preferences:<\/strong> Capacitor’\u0131n yerle\u015fik bir API’sidir ve basit anahtar-de\u011fer depolama i\u00e7in kullan\u0131l\u0131r. Ionic Storage<\/code>‘\u0131n localStorage<\/code> veya IndexedDB<\/code> kullan\u0131m\u0131na benzer, ancak native platformda daha optimize \u00e7al\u0131\u015f\u0131r.<\/p>\n
import { Preferences } from '@capacitor\/preferences';\n\n    \/\/ Veri kaydetme\n    await Preferences.set({\n      key: 'name',\n      value: 'Max',\n    });\n\n    \/\/ Veri okuma\n    const { value } = await Preferences.get({ key: 'name' });\n    console.log(Hello ${value}!<\/code>);\n\n    \/\/ Veri silme\n    await Preferences.remove({ key: 'name' });<\/code><\/pre>\n
*   Capacitor Community SQLite:<\/strong> Ger\u00e7ek bir SQLite veritaban\u0131 kullanmak isteyenler i\u00e7in g\u00fc\u00e7l\u00fc bir se\u00e7enektir. \u0130li\u015fkisel veri modellemesi ve karma\u015f\u0131k SQL sorgular\u0131 yapma imkan\u0131 sunar. B\u00fcy\u00fck ve yap\u0131sal veri setleri i\u00e7in idealdir. Kurulumu ve kullan\u0131m\u0131 Ionic Storage<\/code>‘a g\u00f6re daha karma\u015f\u0131kt\u0131r.<\/p>\n
npm install @capacitor-community\/sqlite\n    npx cap sync<\/code><\/pre>\n
    Kullan\u0131m\u0131 bir veritaban\u0131 ba\u011flant\u0131s\u0131 olu\u015fturmay\u0131 ve SQL sorgular\u0131 y\u00fcr\u00fctmeyi i\u00e7erir.<\/p>\n
Native Storage<\/code> \u00e7\u00f6z\u00fcmleri, Ionic Storage<\/code>‘\u0131n sundu\u011fu kolayl\u0131\u011f\u0131n \u00f6tesinde daha fazla kontrol ve \u00f6zelle\u015ftirme gerektiren durumlar i\u00e7in uygundur.<\/p>\n
Web Storage (localStorage ve sessionStorage)<\/h4>\n
Bu, taray\u0131c\u0131lar\u0131n sundu\u011fu en temel depolama mekanizmalar\u0131d\u0131r ve Ionic uygulamalar\u0131 bir WebView’de \u00e7al\u0131\u015ft\u0131\u011f\u0131 i\u00e7in bunlara do\u011frudan eri\u015febilir.<\/p>\n
*   localStorage<\/code>:<\/strong> Verileri kal\u0131c\u0131 olarak depolar, yani taray\u0131c\u0131 kapat\u0131lsa veya uygulama yeniden ba\u015flat\u0131lsa bile veriler kaybolmaz.
\n*   sessionStorage<\/code>:<\/strong> Verileri yaln\u0131zca oturum s\u00fcresince depolar. Sekme veya taray\u0131c\u0131 kapat\u0131ld\u0131\u011f\u0131nda veriler silinir.<\/p>\n
Avantajlar\u0131 ve Dezavantajlar\u0131<\/h5>\n
*   Avantajlar\u0131:<\/strong>
\n    *   Kullan\u0131m\u0131 son derece kolay ve basittir.
\n    *   Do\u011frudan taray\u0131c\u0131 API’lar\u0131 oldu\u011fu i\u00e7in ek kurulum gerektirmez.
\n    *   Senkron \u00e7al\u0131\u015f\u0131r (ancak bu ayn\u0131 zamanda bir dezavantaj olabilir).
\n*   Dezavantajlar\u0131:<\/strong>
\n    *   K\u00fc\u00e7\u00fck Boyut S\u0131n\u0131rlamas\u0131:<\/strong> Genellikle 5-10 MB ile s\u0131n\u0131rl\u0131d\u0131r.
\n    *   Sadece String Depolama:<\/strong> T\u00fcm veriler otomatik olarak string’e d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr. Nesneleri depolamak i\u00e7in JSON.stringify()<\/code> ve okumak i\u00e7in JSON.parse()<\/code> kullanmak gerekir.
\n    *   Senkron \u00c7al\u0131\u015fma:<\/strong> B\u00fcy\u00fck verilerle \u00e7al\u0131\u015f\u0131rken UI’\u0131 bloke edebilir ve uygulamay\u0131 yava\u015flatabilir.
\n    *   G\u00fcvenlik A\u00e7\u0131klar\u0131:<\/strong> XSS (Cross-Site Scripting) sald\u0131r\u0131lar\u0131na kar\u015f\u0131 savunmas\u0131zd\u0131r. Hassas veriler burada depolanmamal\u0131d\u0131r.
\n    *   WebView’de Silinme Riski:<\/strong> Mobil uygulamalarda, WebView \u00f6nbelle\u011fi temizlendi\u011finde veya uygulama g\u00fcncellendi\u011finde verilerin kaybolma riski vard\u0131r.<\/p>\n
Kullan\u0131m Senaryolar\u0131<\/h5>\n
Basit kullan\u0131c\u0131 tercihleri (\u00f6rne\u011fin, “beni hat\u0131rla” se\u00e7ene\u011fi i\u00e7in kullan\u0131c\u0131 ad\u0131), ge\u00e7ici oturum bilgileri (ancak hassas olmayan), basit UI durumlar\u0131 gibi k\u00fc\u00e7\u00fck ve hassas olmayan veriler i\u00e7in kullan\u0131labilir. Ancak, \u00e7o\u011fu durumda Ionic Storage<\/code> daha g\u00fcvenli ve esnek bir alternatif sunar.<\/p>\n
\/\/ localStorage'a veri kaydetme\nlocalStorage.setItem('lastVisitedPage', '\/dashboard');\n\n\/\/ localStorage'dan veri okuma\nconst lastPage = localStorage.getItem('lastVisitedPage');\nconsole.log('Son ziyaret edilen sayfa:', lastPage);\n\n\/\/ localStorage'dan veri silme\nlocalStorage.removeItem('lastVisitedPage');\n\n\/\/ sessionStorage'a veri kaydetme (sadece mevcut oturum i\u00e7in)\nsessionStorage.setItem('tempData', JSON.stringify({ id: 1, value: 'ge\u00e7ici' }));<\/code><\/pre>\n
IndexedDB<\/h4>\n
IndexedDB, taray\u0131c\u0131lar taraf\u0131ndan sa\u011flanan, istemci taraf\u0131nda b\u00fcy\u00fck miktarda yap\u0131sal veri depolamak i\u00e7in tasarlanm\u0131\u015f d\u00fc\u015f\u00fck seviyeli bir API’d\u0131r. NoSQL bir veritaban\u0131 gibi \u00e7al\u0131\u015f\u0131r.<\/p>\n
Avantajlar\u0131 ve Dezavantajlar\u0131<\/h5>\n
*   Avantajlar\u0131:<\/strong>
\n    *   B\u00fcy\u00fck miktarda veri depolayabilir (genellikle cihaz\u0131n disk alan\u0131na ba\u011fl\u0131d\u0131r).
\n    *   Yap\u0131sal verileri (JavaScript nesneleri, Blob’lar vb.) do\u011frudan depolayabilir.
\n    *   Asenkron \u00e7al\u0131\u015f\u0131r, bu da UI’\u0131 bloke etmez.
\n    *   \u0130\u015flemler (ekleme, okuma, g\u00fcncelleme, silme) i\u00e7in g\u00fc\u00e7l\u00fc sorgulama yetenekleri sunar.
\n*   Dezavantajlar\u0131:<\/strong>
\n    *   API’s\u0131 karma\u015f\u0131k ve \u00f6\u011frenme e\u011frisi y\u00fcksektir. Do\u011frudan kullanmak yerine genellikle Ionic Storage<\/code> gibi soyutlama k\u00fct\u00fcphaneleri tercih edilir.
\n    *   Taray\u0131c\u0131 deste\u011fi genellikle iyidir ancak eski taray\u0131c\u0131larda farkl\u0131l\u0131klar g\u00f6sterebilir.<\/p>\n
Ne Zaman Kullan\u0131l\u0131r?<\/h5>\n
Ionic Storage<\/code> arka planda IndexedDB’yi kulland\u0131\u011f\u0131 i\u00e7in, genellikle IndexedDB’yi do\u011frudan kullanmak yerine Ionic Storage<\/code> tercih edilir. Ancak, \u00e7ok \u00f6zel veritaban\u0131 \u015femalar\u0131, indeksleme stratejileri veya i\u015flem kontrol\u00fc gerektiren senaryolarda do\u011frudan IndexedDB API’s\u0131 ile \u00e7al\u0131\u015fmak gerekebilir.<\/p>\n
WebSQL (Art\u0131k Kullan\u0131lmamal\u0131d\u0131r)<\/h4>\n
WebSQL, bir zamanlar taray\u0131c\u0131larda SQL veritaban\u0131 i\u015flevselli\u011fi sa\u011flamak i\u00e7in \u00f6nerilen bir standartt\u0131. Ancak, W3C taraf\u0131ndan standart d\u0131\u015f\u0131 b\u0131rak\u0131lm\u0131\u015f ve modern taray\u0131c\u0131larda kullan\u0131m\u0131 tavsiye edilmemektedir. Ionic Storage<\/code> hala WebSQL deste\u011fi sunsa da, yeni projelerde IndexedDB veya SQLite gibi alternatiflere y\u00f6nelmek \u00f6nemlidir.<\/p>\n
File System (Capacitor\/Cordova File Plugin)<\/h4>\n
Uygulaman\u0131n b\u00fcy\u00fck dosyalar\u0131 (resimler, videolar, PDF’ler, ses kay\u0131tlar\u0131 vb.) depolamas\u0131 gerekti\u011finde, dosya sistemi eri\u015fimi devreye girer. Bu, Capacitor Filesystem<\/code> veya Cordova File<\/code> eklentileri arac\u0131l\u0131\u011f\u0131yla sa\u011flan\u0131r.<\/p>\n
Avantajlar\u0131 ve Dezavantajlar\u0131<\/h5>\n
*   Avantajlar\u0131:<\/strong>
\n    *   \u00c7ok b\u00fcy\u00fck dosyalar\u0131 depolayabilir.
\n    *   Blob’lar ve di\u011fer ikili veri t\u00fcrleri i\u00e7in idealdir.
\n    *   Platforma \u00f6zg\u00fc dosya sistemine do\u011frudan eri\u015fim sa\u011flar.
\n*   Dezavantajlar\u0131:<\/strong>
\n    *   API’s\u0131 di\u011fer depolama y\u00f6ntemlerine g\u00f6re daha karma\u015f\u0131kt\u0131r.
\n    *   Dosya okuma\/yazma i\u015flemleri izin gerektirebilir (Android’de depolama izni gibi).
\n    *   Veritaban\u0131 gibi sorgulama yetenekleri yoktur; dosyalar\u0131 isimleriyle y\u00f6netmek gerekir.<\/p>\n
Kullan\u0131m Senaryolar\u0131<\/h5>\n
Kullan\u0131c\u0131 taraf\u0131ndan \u00e7ekilen foto\u011fraflar\u0131 veya videolar\u0131 yerel olarak kaydetme, \u00e7evrimd\u0131\u015f\u0131 kullan\u0131m i\u00e7in b\u00fcy\u00fck medya dosyalar\u0131n\u0131 \u00f6nbelle\u011fe alma, PDF dok\u00fcmanlar\u0131n\u0131 depolama gibi senaryolarda kullan\u0131l\u0131r.<\/p>\n
import { Filesystem, Directory, Encoding } from '@capacitor\/filesystem';\n\nasync function writeFile() {\n  await Filesystem.writeFile({\n    path: 'secrets\/text.txt',\n    data: 'This is a test',\n    directory: Directory.Documents,\n    encoding: Encoding.UTF8,\n  });\n}\n\nasync function readFile() {\n  const contents = await Filesystem.readFile({\n    path: 'secrets\/text.txt',\n    directory: Directory.Documents,\n    encoding: Encoding.UTF8,\n  });\n  console.log('Okunan metin:', contents.data);\n}<\/code><\/pre>\n
G\u00fcvenlik ve Performans Konular\u0131<\/h3>\n
Veri depolama stratejisi belirlenirken g\u00fcvenlik ve performans her zaman g\u00f6z \u00f6n\u00fcnde bulundurulmal\u0131d\u0131r.<\/p>\n
G\u00fcvenlik<\/h4>\n
*   Hassas Veriler:<\/strong> Asla \u015fifreler, kredi kart\u0131 bilgileri veya di\u011fer y\u00fcksek hassasiyetli verileri d\u00fcz metin olarak yerel depolama alanlar\u0131nda saklamay\u0131n. Bunun yerine, bu t\u00fcr veriler i\u00e7in sunucu tabanl\u0131 kimlik do\u011frulama ve yetkilendirme mekanizmalar\u0131 kullan\u0131n (\u00f6rne\u011fin, JWT token’lar\u0131 sunucudan al\u0131p Ionic Secure Storage<\/code> gibi \u015fifreli depolama alanlar\u0131nda saklamak).
\n*   XSS Sald\u0131r\u0131lar\u0131:<\/strong> localStorage<\/code> ve sessionStorage<\/code>, XSS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 savunmas\u0131zd\u0131r. Sald\u0131rganlar, bu depolama alanlar\u0131ndaki verilere JavaScript arac\u0131l\u0131\u011f\u0131yla eri\u015febilir. Ionic Storage<\/code> ve Native Storage<\/code> bu konuda daha g\u00fcvenli katmanlar sunar.
\n*   Veri B\u00fct\u00fcnl\u00fc\u011f\u00fc:<\/strong> Depolanan verilerin de\u011fi\u015ftirilmedi\u011finden veya bozulmad\u0131\u011f\u0131ndan emin olmak i\u00e7in do\u011frulama mekanizmalar\u0131 kullan\u0131n.<\/p>\n
Performans<\/h4>\n
*   Asenkron \u0130\u015flemler:<\/strong> Veri okuma ve yazma i\u015flemleri genellikle I\/O (giri\u015f\/\u00e7\u0131k\u0131\u015f) yo\u011fun i\u015flemlerdir. Bu nedenle, localStorage<\/code> gibi senkron \u00e7al\u0131\u015fan mekanizmalardan ka\u00e7\u0131narak Ionic Storage<\/code> veya Native Storage<\/code> gibi asenkron \u00e7\u00f6z\u00fcmleri tercih edin. Asenkron i\u015flemler, uygulaman\u0131n UI’\u0131n\u0131n donmas\u0131n\u0131 engeller ve daha ak\u0131c\u0131 bir kullan\u0131c\u0131 deneyimi sunar.
\n*   Veri Miktar\u0131:<\/strong> Yerel depolama alanlar\u0131n\u0131 gereksiz yere b\u00fcy\u00fck veri setleriyle doldurmaktan ka\u00e7\u0131n\u0131n. Yaln\u0131zca ger\u00e7ekten ihtiya\u00e7 duyulan verileri depolay\u0131n ve d\u00fczenli olarak eski veya gereksiz verileri temizleyin.
\n*   \u00d6nbellekleme Stratejileri:<\/strong> S\u0131k\u00e7a eri\u015filen ancak nadiren de\u011fi\u015fen veriler i\u00e7in etkili \u00f6nbellekleme stratejileri uygulay\u0131n. \u00d6rne\u011fin, bir API’dan \u00e7ekilen verileri yerel olarak depolay\u0131n ve belirli bir s\u00fcre sonra veya bir g\u00fcncelleme tetiklendi\u011finde yenileyin.
\n*   Veri Yap\u0131s\u0131:<\/strong> Depolanan verilerin yap\u0131s\u0131n\u0131 optimize edin. \u00d6rne\u011fin, b\u00fcy\u00fck bir nesneyi her seferinde okumak yerine, yaln\u0131zca ihtiya\u00e7 duyulan alanlar\u0131 ayr\u0131 ayr\u0131 depolamak veya daha k\u00fc\u00e7\u00fck, ili\u015fkili nesnelere b\u00f6lmek performans\u0131 art\u0131rabilir.<\/p>\n
Senaryo Bazl\u0131 Kar\u015f\u0131la\u015ft\u0131rmalar ve Se\u00e7im Kriterleri<\/h3>\n
Do\u011fru depolama \u00e7\u00f6z\u00fcm\u00fcn\u00fc se\u00e7mek, uygulaman\u0131z\u0131n \u00f6zel ihtiya\u00e7lar\u0131na ba\u011fl\u0131d\u0131r. \u0130\u015fte baz\u0131 senaryolar ve \u00f6nerilen depolama mekanizmalar\u0131:<\/p>\n
*   K\u00fc\u00e7\u00fck, Ge\u00e7ici Veriler (Oturum Boyunca):<\/strong>
\n    *   \u00d6rnek:<\/strong> Form doldururken ge\u00e7ici olarak kaydedilen taslak veriler, kullan\u0131c\u0131 navigasyon ge\u00e7mi\u015fi.
\n    *   \u00c7\u00f6z\u00fcm:<\/strong> sessionStorage<\/code> (basitli\u011fi nedeniyle) veya Ionic Storage<\/code> (daha tutarl\u0131 bir API i\u00e7in).
\n*   K\u00fc\u00e7\u00fck, Kal\u0131c\u0131 Ayarlar ve Kullan\u0131c\u0131 Tercihleri:<\/strong>
\n    *   \u00d6rnek:<\/strong> Tema se\u00e7imi, dil ayar\u0131, “beni hat\u0131rla” kullan\u0131c\u0131 ad\u0131.
\n    *   \u00c7\u00f6z\u00fcm:<\/strong> Ionic Storage<\/code> (\u00f6nerilir), localStorage<\/code> (\u00e7ok basit durumlar i\u00e7in). Capacitor Preferences<\/code> da native tarafta iyi bir se\u00e7enektir.
\n*   B\u00fcy\u00fck, Yap\u0131sal Veriler (\u00c7evrimd\u0131\u015f\u0131 Eri\u015fim \u0130\u00e7in):<\/strong>
\n    *   \u00d6rnek:<\/strong> \u00dcr\u00fcn listeleri, \u00e7evrimd\u0131\u015f\u0131 okunacak makaleler, kullan\u0131c\u0131 profilleri.
\n    *   \u00c7\u00f6z\u00fcm:<\/strong> Ionic Storage<\/code> (arka planda IndexedDB kullan\u0131r), Capacitor Community SQLite<\/code> (ili\u015fkisel veri modellemesi ve karma\u015f\u0131k sorgular i\u00e7in).
\n*   Hassas Veriler (Token’lar, Kullan\u0131c\u0131 Bilgileri):<\/strong>
\n    *   \u00d6rnek:<\/strong> Kimlik do\u011frulama token’lar\u0131, API anahtarlar\u0131.
\n    *   \u00c7\u00f6z\u00fcm:<\/strong> Ionic Secure Storage<\/code> (Cordova\/Capacitor eklentisi arac\u0131l\u0131\u011f\u0131yla), Capacitor Preferences<\/code> (basit, native anahtar-de\u011fer depolama). Asla localStorage<\/code> veya sessionStorage<\/code> kullanmay\u0131n.
\n*   B\u00fcy\u00fck Medya Dosyalar\u0131:<\/strong>
\n    *   \u00d6rnek:<\/strong> Kullan\u0131c\u0131 foto\u011fraflar\u0131, videolar, ses kay\u0131tlar\u0131.
\n    *   \u00c7\u00f6z\u00fcm:<\/strong> Capacitor Filesystem<\/code> veya Cordova File<\/code> eklentisi.
\n*   Karma\u015f\u0131k \u00c7evrimd\u0131\u015f\u0131 Senkronizasyon Gerektiren Uygulamalar:<\/strong>
\n    *   \u00d6rnek:<\/strong> \u00c7evrimd\u0131\u015f\u0131 veri giri\u015fi ve sunucuyla otomatik senkronizasyon.
\n    *   \u00c7\u00f6z\u00fcm:<\/strong> PouchDB<\/code> gibi daha geli\u015fmi\u015f \u00e7\u00f6z\u00fcmler, Capacitor Community SQLite<\/code> ile custom senkronizasyon mant\u0131\u011f\u0131.<\/p>\n
Geli\u015fmi\u015f Depolama \u00c7\u00f6z\u00fcmleri<\/h3>\n
Baz\u0131 projeler, standart depolama mekanizmalar\u0131n\u0131n \u00f6tesinde daha sofistike \u00e7\u00f6z\u00fcmler gerektirebilir.<\/p>\n
SQLite (Native Plugin)<\/h4>\n
Capacitor Community SQLite<\/code> veya cordova-sqlite-storage<\/code> gibi eklentiler, Ionic uygulamalar\u0131na tam te\u015fekk\u00fcll\u00fc bir ili\u015fkisel veritaban\u0131 yetene\u011fi kazand\u0131r\u0131r. Bu, karma\u015f\u0131k veri modelleri, ili\u015fkisel sorgular ve b\u00fcy\u00fck veri setleriyle \u00e7al\u0131\u015fan uygulamalar i\u00e7in idealdir. Kurulum ve y\u00f6netim, Ionic Storage<\/code>‘a g\u00f6re daha fazla \u00e7aba gerektirse de, sundu\u011fu esneklik ve performans \u00f6zellikle veri yo\u011fun uygulamalarda paha bi\u00e7ilmezdir.<\/p>\n
PouchDB\/CouchDB<\/h4>\n
PouchDB, taray\u0131c\u0131da \u00e7al\u0131\u015fan bir NoSQL veritaban\u0131d\u0131r ve CouchDB ile otomatik senkronizasyon yetenekleri sunar. \u00c7evrimd\u0131\u015f\u0131 ilk (offline-first) uygulamalar geli\u015ftirmek isteyenler i\u00e7in m\u00fckemmel bir \u00e7\u00f6z\u00fcmd\u00fcr. PouchDB, verileri yerel olarak IndexedDB’de depolar ve internet ba\u011flant\u0131s\u0131 oldu\u011funda CouchDB sunucusuyla sorunsuz bir \u015fekilde senkronize eder. Bu, karma\u015f\u0131k \u00e7evrimd\u0131\u015f\u0131 veri y\u00f6netimi ve \u00e7at\u0131\u015fma \u00e7\u00f6z\u00fcm\u00fc gerektiren uygulamalar i\u00e7in \u00e7ok g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r.<\/p>\n
Sonu\u00e7<\/h3>\n
Ionic 2+ uygulamalar\u0131nda veri depolama, geli\u015ftiricilere geni\u015f bir ara\u00e7 yelpazesi sunar. Ionic Storage<\/code>, \u00e7o\u011fu senaryo i\u00e7in varsay\u0131lan ve \u00f6nerilen bir \u00e7\u00f6z\u00fcmd\u00fcr; \u00e7\u00fcnk\u00fc farkl\u0131 depolama mekanizmalar\u0131n\u0131 tek bir tutarl\u0131 ve asenkron API alt\u0131nda birle\u015ftirir. Ancak, uygulaman\u0131z\u0131n \u00f6zel ihtiya\u00e7lar\u0131na ba\u011fl\u0131 olarak, Capacitor Preferences<\/code>, Capacitor Community SQLite<\/code>, Capacitor Filesystem<\/code> veya hatta PouchDB<\/code> gibi daha spesifik veya geli\u015fmi\u015f \u00e7\u00f6z\u00fcmlere y\u00f6nelmek gerekebilir.<\/p>\n
Do\u011fru depolama \u00e7\u00f6z\u00fcm\u00fcn\u00fc se\u00e7erken veri miktar\u0131, veri tipi, g\u00fcvenlik gereksinimleri, performans beklentileri ve uygulaman\u0131n \u00e7evrimd\u0131\u015f\u0131 \u00e7al\u0131\u015fma ihtiyac\u0131 gibi fakt\u00f6rleri dikkatlice de\u011ferlendirmek \u00f6nemlidir. Bu makalede ele al\u0131nan \u00e7e\u015fitli depolama mekanizmalar\u0131 ve kullan\u0131m senaryolar\u0131, Ionic geli\u015ftiricilerinin bilin\u00e7li kararlar almas\u0131na yard\u0131mc\u0131 olmay\u0131 ama\u00e7lamaktad\u0131r. Uygulaman\u0131z\u0131n gelecekteki b\u00fcy\u00fcmesini ve bak\u0131m\u0131n\u0131 kolayla\u015ft\u0131rmak i\u00e7in sa\u011flam bir depolama stratejisi olu\u015fturmak, ba\u015far\u0131l\u0131 bir mobil uygulama geli\u015ftirme s\u00fcrecinin temel ta\u015flar\u0131ndan biridir.<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Ionic 2+ Uygulamalar\u0131nda Veri Depolama: Kapsaml\u0131 Bir Rehber\nMobil uygulama geli\u015ftirirken, kullan\u0131c\u0131 deneyimini zenginle\u015ftirmek ve uygulaman\u0131n","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":[1],"tags":[],"class_list":{"0":"post-31142","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\nIonic 2+ Uygulamalar\u0131nda Veri Depolama: Kapsaml\u0131 Bir Rehber - 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