Question 1

How to add authentication to a LoopBack 4 API?

Accepted Answer

LoopBack provides extensible authentication components; you can use built-in strategies like JWT or OAuth2, or integrate third-party solutions by configuring providers in your application. Check the official documentation for detailed tutorials and examples.

Question 2

LoopBack vs NestJS for REST APIs comparison

Accepted Answer

LoopBack excels in rapid API generation and OpenAPI integration, making it ideal for standardized REST APIs with less boilerplate. NestJS offers more flexibility with a modular architecture and supports various transport layers, but requires more manual coding for endpoints.

Question 3

Can LoopBack handle WebSockets?

Accepted Answer

LoopBack does not have built-in WebSocket support, as it focuses on REST APIs. However, due to its extensible core, you can integrate libraries like Socket.io manually, though this adds complexity and isn't a native feature.

Question 4

Is LoopBack good for microservices?

Accepted Answer

Yes, LoopBack is well-suited for microservices due to its scalable design, code generation, and ability to integrate with multiple data sources, as mentioned in its features for building modern applications with complex integrations.

Question 5

How to migrate from LoopBack 3 to LoopBack 4?

Accepted Answer

Migration involves reworking models and controllers, as LoopBack 4 is a complete rewrite. The official documentation provides a detailed guide, but expect significant changes due to architectural differences between versions.

Question 6

Does LoopBack support GraphQL?

Accepted Answer

LoopBack does not natively support GraphQL; it's designed around REST and OpenAPI. You can use third-party packages or build custom resolvers to add GraphQL endpoints, but this requires extra effort and isn't streamlined.

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