Does SQLite Work With Vercel?

Partially CompatibleLast verified: 2026-02-26

SQLite works with Vercel but requires careful architecture due to Vercel's stateless, ephemeral serverless environment and lack of persistent filesystem.

Quick Facts

Compatibility

partial

Setup Difficulty

Moderate

Official Integration

No — community maintained

Confidence

high

Minimum Versions

How SQLite Works With Vercel

SQLite can technically run on Vercel's serverless functions, but it's not ideal for most production use cases. Vercel functions are stateless and ephemeral—any SQLite database file written to the filesystem disappears after the function executes. This makes SQLite unsuitable for traditional server-side persistence. However, SQLite shines in two specific scenarios: (1) read-only databases bundled with your deployment for static data queries, and (2) temporary in-memory databases for request-scoped operations. For the bundled approach, you include a pre-built .db file in your deployment, then query it from API routes—perfect for product catalogs or reference data that changes infrequently. For dynamic data that needs persistence, developers must either sync SQLite to an external database (S3, turso, or neon) after writes, or abandon SQLite entirely for Postgres/MongoDB. Edge Functions add another layer of complexity since they run closer to users but have stricter resource constraints and no Node.js filesystem access.

Best Use Cases

→Bundling read-only reference data (product catalogs, configuration) with deployments for fast local queries

→Using SQLite as a build-time tool to generate static site content from structured data

→Temporary in-memory SQLite databases for complex request-scoped calculations or transformations

→Development-time SQLite databases synced to Vercel Postgres or Turso before production deploys

Read-Only Bundled SQLite with Vercel Serverless

bash

npm install better-sqlite3

typescript

import Database from 'better-sqlite3';
import path from 'path';
import { VercelRequest, VercelResponse } from '@vercel/node';

export default function handler(req: VercelRequest, res: VercelResponse) {
  try {
    // Load pre-built database bundled with deployment
    const dbPath = path.join(process.cwd(), 'data.db');
    const db = new Database(dbPath, { readonly: true });
    
    const products = db.prepare(
      'SELECT id, name, price FROM products LIMIT 10'
    ).all();
    
    db.close();
    res.status(200).json(products);
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
}

Known Issues & Gotchas

critical

Filesystem is ephemeral in serverless functions—any writes to SQLite files are lost after the function executes

Fix: Use read-only bundled databases, or sync writes to an external database (Turso, Vercel Postgres, S3). Never rely on local file persistence.

warning

Cold starts add latency when loading large SQLite files into memory on first query

Fix: Keep bundled databases under 5-10MB. For larger datasets, use a proper hosted database. Consider compression or partial data loading.

warning

Edge Functions don't have access to the Node.js filesystem or SQLite3 native bindings

Fix: Stick to Serverless Functions for SQLite usage. Use sql.js (pure JavaScript SQLite) if Edge Functions are required.

critical

Concurrent writes from multiple function instances cause database locks and conflicts

Fix: Never use SQLite for concurrent multi-instance writes on Vercel. Use a proper database backend instead.

Alternatives

•Vercel Postgres + Node.js pg client: Fully managed, persistent, scales automatically, no filesystem concerns
•Turso (SQLite Cloud) + libsql client: SQLite compatibility with replication, HTTP API, better suited for Vercel's architecture
•MongoDB Atlas + mongoose: NoSQL alternative with generous free tier, excellent Vercel integration, no schema constraints

Resources

docsVercel Serverless Functions Docs docsBetter-sqlite3 NPM Package docsTurso SQLite Cloud for Vercel docsVercel Postgres Documentation

Related Compatibility Guides

Django + Vercel Flask + SQLite Flask + Vercel NestJS + Vercel Django + SQLite FastAPI + SQLite

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