IndexedDB Browser

IndexedDB for browser storage.

DatabaseModerate

Stack Components

DBIndexedDB

Wrapperidb 8

PatternOffline-first

Why

Large, async, transactional, offline. PostgreSQL is used by nearly 50% of professional developers, making it the most popular database (Stack Overflow 2024).

SQLite powers 1 trillion+ active databases (every iOS/Android device), and DuckDB emerged as the fastest OLAP engine for analytics, 5-10x faster than ClickHouse for single-node queries.

When

Use for offline web apps. Avoid for small data (use localStorage).

How

1. npm i idb 2. Open database with version 3. Create object stores 4. Transactional reads/writes 5. Add environment configuration — cp .env.example .env && edit values 6. Run tests — npm test or pnpm test to verify setup 7. Deploy — git push to trigger CI/CD or manual deploy

Example

const db = await openDB('app', 1, { upgrade(db) { db.createObjectStore('users', { keyPath: 'id' }) } }) await db.put('users', { id: 1, name: 'Alice' })

Common Problems

⚠Version upgrades — handle in upgrade callback
⚠Quota — check navigator.storage.estimate()
⚠Configuration drift between environments — use infrastructure-as-code (Terraform/Pulumi) to keep dev/staging/prod identical

Best Practices

✓Use idb for promise API
✓Leverage indexes for queries
✓Set up health checks and graceful shutdown — handle SIGTERM to drain in-flight requests before exit

FAQ

What is IndexedDB Browser and what projects is it for?

IndexedDB for browser storage. It pairs layered technologies for end-to-end type safety and out-of-the-box deploys, fitting everything from MVPs to production SaaS.

How do I spin up a working demo with IndexedDB Browser in 10 minutes?

Two steps: (1) npm i idb; (2) Open database with version. Get the local dev server running, then wire one real data source to verify the end-to-end loop.

What is the most common pitfall with IndexedDB Browser and how do I avoid it?

The most common pitfall is: Version upgrades — handle in upgrade callback. Avoid it by adding the matching checklist to your PR template and running type-check + lint + unit tests in CI — three gates before merge.

What are the best practices for IndexedDB Browser?

Best practices for IndexedDB Browser include: Use idb for promise API; Leverage indexes for queries; Set up health checks and graceful shutdown — handle SIGTERM to drain in-flight requests before exit. The first one — "Use idb for promise API" — should be set up at project init to avoid costly rework later.

When should I NOT choose IndexedDB Browser?

Pick something else in three cases: (1) the team has zero experience with the core framework and the deadline is tight (learning-curve risk); (2) it's a pure content/marketing site (Astro is lighter); (3) you need very high throughput (>10k RPS) or strict-consistency microservices (Go/Rust). IndexedDB Browser shines for mid-to-high complexity full-stack and API work — don't over-engineer simple static pages with it.