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A empt databas i ever pocke

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Phi Nas @philnash http://philna.sh [email protected]

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A empt databas i ever pocke

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Problem

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Performanc

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O lin

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O lin Poo connectivit

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O lin Poo connectivit Resilienc

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Use experienc

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Progressiv We Ap

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A empt databas i ever pocke

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Th option

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Cookie

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LocalStorag

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LocalStorag localStorage.setItem('FullStackCon', 'Awesome');

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Bu ...

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WebSQL?

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S ...

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IndexedDB

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IndexedDB ha ba reputatio

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Wha i IndexedDB?

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Objec stor

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Transactiona

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Asynchronou

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Sam origi polic

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Suppo ?

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No content

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Dem

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Ther ' mor !

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Indexe

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Indexe request.onupgradeneeded = (event) => { const db = event.target.result; const objectStore = db.createObjectStore('messages', { keyPath: 'sid' }); objectStore.createIndex('dateUpdated', 'dateUpdated'); }; 01. 02. 03. 04. 05. 06. 07.

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Indexe const transaction = db.transaction(['messages']); const objectStore = transaction.objectStore('messages'); const index = objectStore.index('dateUpdated'); index.openCursor().onsuccess = (event) => { // do stuff } 01. 02. 03. 04. 05. 06.

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Upgrade

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Upgrade request.onupgradeneeded = (event) => { const db = event.target.result; db.createObjectStore("messages", { keyPath: "sid" }); }; 01. 02. 03. 04.

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Upgrade request.onupgradeneeded = (event) => { const db = event.target.result; if (event.oldVersion < 1) { db.createObjectStore("messages", { keyPath: "sid" }); } if (event.oldVersion < 2) { db.createObjectStore("channels", { keyPath: "sid" }); } }; 01. 02. 03. 04. 05. 06. 07. 08. 09.

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Bu

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Safar

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Librarie !

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id -keyva localForag id Dexi PouchDB

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id -keyva

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id -keyva idbKeyval.set('FullStackCon', 'Awesome') .then(() => console.log(' ')) .catch(err => console.error(' ', err)); 01. 02. 03.

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localForag

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localForag localforage.setItem('FullStackCon', 'Awesome', function (err) { if (err) { console.error(' ', err); } else { console.log(' '); } }); 01. 02. 03. 04.

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localForag localforage.setItem('FullStackCon', 'Awesome') .then(() => { console.log(' '); }) .catch((err) => { console.error(' ', err); }); 01. 02. 03.

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id

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id const dbPromise = idb.open('messages', 1, upgradeDB => { upgradeDB.createObjectStore('messages'); }); 01. 02. 03.

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id dbPromise.then(db => { return db.transaction('messages') .objectStore('messages').get(key); }); 01. 02. 03. 04.

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Dexi

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Dexi const dexie = new Dexie("messageStore"); dexie.version(1).stores({ messages: 'sid,dateUpdated' }); 01. 02. 03. 04.

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Dexi dexie.open().then((db) => { db.messages.where("sid").equals(key) .then((message) => { console.log(message.body); }); }); 01. 02. 03. 04.

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pouchd

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pouchd var db = new PouchDB('messages'); db.put({ _id: 'sid', body: ' ', }).then((response) => { console.log(' '); }).catch((err) => { console.error(' ', err); }); 01. 02. 03. 04. 05. 06. 07. 08. 09.

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A empt databas i ever pocke

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IndexedDB hel t enhanc th experienc

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Performanc

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Resilienc

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Le ' l th s database !

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Thank !

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Thank ! @philnash http://philna.sh [email protected]