Storage choices for your PWA

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Our progressive web app (PWA) can use different kinds of storage:

• local or session storage
• in Service Worker, the Cache API
• IndexedDB for general data storage

Local or session storage

Highlights:

window.localStorage

• small amounts
• no expiration date
• strings only
• not secure

window.sessionStorage

• small amounts
• disposable - it disappears when a tab/window is closed

Service Worker, Cache API

• for your app’s resources (HTML, CSS, JS, images, etc.)

IndexedDB

• typed data (including strings)

How much can be stored? See this linked document.

( more to come, including code examples )

Learning resources

Start here:

Google Developers, Web Storage

Then use the left-side nav links for related topics.