Hybrid applications in NestJS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a hybrid application in NestJS?

A hybrid application in NestJS is an app that combines both HTTP and microservice capabilities in one project, allowing it to handle web requests and message-based communication simultaneously.

intermediate

How do you create a hybrid application in NestJS?

You create a hybrid application by combining create() for HTTP and connectMicroservice() for microservices in the same app instance.

beginner

Why use a hybrid application in NestJS?

Hybrid applications let you serve HTTP requests and listen to microservice messages in one app, reducing deployment complexity and enabling better resource sharing.

beginner

Which NestJS method allows adding microservice support to an existing HTTP app?

The connectMicroservice() method adds microservice support to an existing HTTP application instance.

intermediate

What is important to remember about starting a hybrid NestJS app?

You must call app.startAllMicroservices() to start microservices and app.listen() to start the HTTP server, ensuring both parts run properly.

What does a NestJS hybrid application combine?

A Only HTTP server

B HTTP server and microservices

C Only microservices

D Database and cache

A hybrid application combines HTTP server and microservices in one app.

Which method adds microservice support to a NestJS app?

A connectMicroservice()

B createMicroservice()

C startMicroservice()

D addMicroservice()

The connectMicroservice() method adds microservice support to an existing app.

What must you call to start microservices in a hybrid app?

A app.listen()

B app.runMicroservices()

C app.startAllMicroservices()

D app.launchMicroservices()

app.startAllMicroservices() starts all connected microservices.

Why choose a hybrid app in NestJS?

A To separate HTTP and microservices into different apps

B To only use HTTP server

C To only use microservices

D To combine HTTP and microservices in one app

Hybrid apps combine HTTP and microservices in one app for simplicity.

Which NestJS method creates a standard HTTP app?

A create()

B createHttpApp()

C createMicroservice()

D createHybridApplication()

The create() method creates a standard HTTP application.

Explain how to set up a hybrid application in NestJS and why it might be useful.

Think about combining two types of servers in one app.

Describe the lifecycle methods needed to run both HTTP and microservices in a NestJS hybrid app.

Starting both parts is necessary for the app to work fully.