Nest.js Microservices Tutorial in 20 Minutes 

First time stepping into the realm of microservices - I still had some questions after reading the NestJS documentation so I went to RU-vid, found your video, and after watching I understand the fundamentals a lot better. Thanks so much for taking the time to make this!

Finally a good example of microservices using nestjs! Thank you very much.

Hmm I really didn't expect that it will be so easy explained. Great Job, a great developer understands he needs only to get the principles and basics right, the rest is his job and you delivered exactly that.

Great video and an amazing amount of practical info/learning packed into 18 minutes

Loved the pace of a video. Short and filled with information. 10/10

this is awesome i now just got an idea of microservices

Your examples communicated some key concepts and clarified nest js implementation options. Thanks

On man you are so good. I liteally bought your udemy course. You are a great teacher sir

Wow! Great video. Really commendable! I mean, in literally 20 minutes I've gotten a detailed, conceptual image of the entire NestJS Microservice technique

Great, thank you - a lot clearer to me now! You covered everything

Thank you so much! Such a simple yet clear example.

As always simple and clear explanation, thank you michael !

Thank you! Awesome video! In our company, someone was assigned to setup the microservices and I really did not mind to understand because I believed it was too complex for me. As long as the microservices were all set up, i just continued coding as usual. This video made it very easy to understand and I can now see why the dev who setup the microservices decided to go with certain approach. I'm curious about the authentication across different microservices, though. Can you make a video for that if possible? That would be amazing!

What's the point in using the event-based communication pattern if we have to declare / inject all the subscriber microservices (sample-analytics, sample-communication) within the publisher microservice (sample-backend)? Isn't one of the primary advantages of event-based communication the fact that the service publishing the event doesn't know / care about any downstream services that may subscribe to it? This seems like there's still tight coupling between services. For example, what happens if I want to add another service that cares about the user_created event -- will I have to modify the sample-backend to allow this? Seems like an antipattern. This isn't a criticism of you or the tutorial -- thank you for sharing! It's more a criticism of NestJS if this is how the expect you to handle event-based communication.

Would like seeing this deploy using severless framework and lambda

Excellent vide Michael, love your content and way of explaining things. Keep it up

Thank you very much for sharing this tutorial. It's well explained and very helpful

Awesome video, you made it so easy to understand

Nice example I would suggest you to use monorepos feature that Nestjs provides, quite smooth microservices architecture at the end, plus gives you ability to clean your codebase from code duplication such as dto's you're using across the services best regards

great video thank you so much!

Amazing tutorial! Thanks for sharing

WTF, the tutorial doesn't work, even when reproducing exactly what the author does, it bugs when sending the POST request in Postman. Even after cloning the repo and running both servers with 'nest start --watch', nothing happens. The request runs infinitely, and there's nothing in the logs.

i didn't understand how microservices get the event. http based api it is understood that port and ip is given but how does microservice listen to event

Can we use libs/common for Authorization and some other common utils like we do in monolithic project, using this microservice structure ? If Yes then please give me some references. Thanks

How does the "sample-backend" knows that "COMMUNICATION" refers to the "sample-communication" microservice? As far as I saw the "COMMUNICATION" token is only at the "sample-communication" microsservice

wow! so simple lol.... You are a life saver bruh

I am a bit confused here i thought the sample-backend which is acting as the api gateway is supposed to pass the incoming request to a microservice to handle, whatever business logic and then the specific microservice can emit an event so that other services that needs to do anything with be notified.??

You're the best!

Thank you! Very good for me.

thanks a lot. very helpful. is there a way to avoid duplicating CreateUserEvent in all microservices?

Great video, thank you.

Great tutorial simple, and clear. Good job. Btw can I ask what your vscode theme is ?

How do you effectively test automate these event / message based applications?

Awesome video!

thank you for record this video ♥

Please some question. - Why did you choose use TCP instead of GRPC and what are the benefits? - How do you host something like this 🥲🥲 - Is it possible to share code between services, like types or DTOs? Thank you for this video BTW, I've been struggling with this concept and you just simplified it in one short video. 👏🏽👏🏽

that was so beautiful 🤯

Thanks for the video. Loved it. It would be good if you could do a video on microservices and monorepo in nestjs. I mean how do you create a monorepo microservices project in nestjs where we have one API gateway for http requests and all the other microservices listens to events sent by API gateway without allowing http requests on their own.

thank you a lot bro, it was really helpfull

Amazing man 👌

Nice work!!

Great, thanks.

thank you Michael for everything, well how do you compare this approach adopted by you, where you have added multiple nestjs projects to one aorkspace, which i found flexible, VS or compared to the one adopted by nestjs monorepo (apps)? well honestly i find this approach more flexible as i have said above for many reasons: - Scalability. - Teams and colaboration. - Multi-lang dev environment. - Database per microservice and the hustle of dealing with monorepos setup and configs for shared files and packages like prisma for example. - Avoiding limitations by any given framework, which makes you finding yourself dealing with solving problems by the same language often with the help of the same tools which results at the end of the same results, thats what stand agains the microservices principle and patterns.

I loved it !! Quick question, would this work the same with docker container?

Great job!

i learn a lota from this tutorial,, can you give litle bit explanation about how to get some return result about using this method,, if we using try catch in controller,, thx

Great video. Question: I'm getting a "no elements in sequence" from the getAnalytics call ? I'm on version 9.x.x

Brother. Can we have a multi tenant example with nest js ?

Hi... Thanks for your tutorial... Can you please clear my doubt?.. can we call api endpoint of communication or analytics microservices?

This is good but this is gonna take a lot spaces, why not using nestjs workspaces?

Subscribed!

What is that theme? pllz

Great !

When i run 'sample-communication' app (after 'sample-backend' is running) - i got an error that port 3000 already in use...Could anyone give me an idea?

At first it didn't work for me, after a while I understood that I needed to establish the host and port when registering the ClientsModule, after that it worked correctly, tks

Do you know that Guay is a very common 80's spanish expresión that means "cool"?

Is there a way to use the TCP transport pattern with external apis that are not written with nestjs? And is it possible to use other TCP ports that are private to the microservices when dealing with TCP communication? Or must the traffic all go through the single "3000" port?

Get my highly-rated Udemy courses at a discount here: michaelguay.dev/udemy/

How can it handle parallel processing of requests in the backend, mostly i have seen people use Java /Python to work out the backend

Hi Micheal, have you used any backend framework in the past? Like Fastapi etc. Just wondering what’s the pros and cons of using Nestjs. Thank you so much for the video!

Thanks from Brasil ! õ/

I have a doubt Is there another way to consume mi grpc service without an api gateway?

amazing

How is it different from with gateway api + createProxyMiddleware ?

Is there a way to grab any message pattern and put it into a variable?

Hello Michael how can i use typescript in nestjs

Which one would you recommend between this pattern and the monorepo micro services pattern in your latest video and what’s the best practice in deployment and repo management? I think I like the monorepo more cos my team is small but I have no idea on the deployment. Thanks a lot!

How to implement multiple messagepatterns?

At what situations we should go for a microservice architecture ? I am basically developing rest apis .So how can we make a decision on building a micro service ?

how do I do if I made the microservice apart

How to use request body in services? without passing the body in functions in controllers

Why I am getting listen EADDRINUSE : address already in use error.

Hey guys, What is the difference between emit and send methods?

Next, you show how to do it using a message broker

Could all these services be split into their own repo?

I am unable to get the output can u guide me or respond to my comment. Plz

what do you think about using prisma package for handling databases queries? did you ever use it ?

🎉🎉🎉cool

when starting the communication server after running sample-backend. it is giving error that port 3000 already in use

Do not use a stupid max. Get on Windows.

Hi Michael Guay, what's your twitter handle. Nice job!