Does NestJS Work With SQLite?
NestJS works excellently with SQLite through TypeORM or Prisma, making it ideal for development, testing, and lightweight production applications.
Quick Facts
How NestJS Works With SQLite
NestJS integrates seamlessly with SQLite via TypeORM (the officially recommended ORM) or Prisma. TypeORM provides native SQLite support with decorators that align perfectly with NestJS's dependency injection pattern. You install `@nestjs/typeorm`, `typeorm`, and `sqlite3` packages, configure a TypeOrmModule in your AppModule, and define entities using decorators. SQLite's serverless nature means zero database setup—just a file on disk—making it perfect for rapid prototyping, integration tests, and small-to-medium production deployments. The developer experience is smooth: migrations work out of the box, relationships are handled elegantly, and the entire stack feels cohesive. Performance is solid for applications under moderate load; SQLite handles thousands of concurrent connections reasonably well, though it has write-locking limitations. For testing, in-memory SQLite databases (`:memory:`) are incredibly fast and don't require teardown.
Best Use Cases
Quick Setup
npm install @nestjs/typeorm typeorm sqlite3// app.module.ts
import { Module } from '@nestjs/common';
import { TypeOrmModule } from '@nestjs/typeorm';
import { User } from './user.entity';
@Module({
imports: [
TypeOrmModule.forRoot({
type: 'sqlite',
database: 'db.sqlite',
entities: [User],
synchronize: true,
logging: true,
}),
TypeOrmModule.forFeature([User]),
],
})
export class AppModule {}
// user.entity.ts
import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';
@Entity()
export class User {
@PrimaryGeneratedColumn()
id: number;
@Column()
name: string;
@Column({ unique: true })
email: string;
}Known Issues & Gotchas
SQLite only allows one write operation at a time; concurrent writes will queue and cause slowdowns
Fix: Use SQLite for single-writer or read-heavy workloads. For multi-writer APIs, migrate to PostgreSQL or MySQL
TypeORM migrations with complex ALTER TABLE statements may fail since SQLite has limited DDL support
Fix: Test migrations thoroughly; use synchronize: true during development, then generate explicit migration files
Foreign key constraints are disabled by default in SQLite
Fix: Enable them in your data source configuration: { enableKeepAlive: true, supportBigNumbers: true } or raw PRAGMA statement
File-based database can cause issues in serverless/containerized environments if storage isn't persistent
Fix: Use managed cloud databases or ensure mounted volumes persist between deployments
Alternatives
- •NestJS + PostgreSQL: Superior for production, concurrent writes, complex queries; requires separate database server
- •NestJS + MongoDB: Best for unstructured data and horizontal scaling; heavier memory footprint
- •Fastify + Prisma + SQLite: Lighter alternative with excellent DX; less opinionated than NestJS
Resources
Related Compatibility Guides
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