Nest.js Microservices with NATS, SQL, and Docker

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0:00 - Introduction
8:20 - Project Setup
22:00 Docker Compose
35:44 Users HTTP API
52:00 Send message to User Microservice
1:15:20 - Communicating between Microservices
1:23:38 - Connect Microservices to Database
1:53:00 - Handling Relational Data

[somerandomchannel]

00:02 Microservices divide work into multiple processes.
02:28 Microservice architecture can vary based on business needs and scalability.
07:21 Sharing a single database for all microservices to simplify
10:02 Install NestJS microservices and NATS packages for setting up microservices and delivering messages
14:47 Setting up Docker and Docker ignore file for a Node.js project
17:05 Setting up other microservices in development mode
21:27 Setting up Nats protocol and Docker compose for microservices.
23:31 Exposing ports and setting up volume for hot reload
27:44 Configuring microservices to connect to Nats server and update via Docker
29:38 Services can connect to the NATS server using the service name as the host name in Docker.
34:05 Setting up communication between API Gateway and user microservice
36:11 Setting up user module and controller in Nest.js for microservice architecture
40:54 Fixing dependency resolution issue in Nest.js application
43:16 Creating a data transfer object (DTO) for user payload
48:03 Setting validation rules for request body in Nest.js
50:10 Sending validated request body to users microservice using NATS
54:24 Using the @Controller decorator and subscribing to events in Nest.js Microservices
56:41 Using Nest.js microservices with NATS and SQL
1:01:05 Understanding how to subscribe to an observable and return values in Nest.js
1:03:04 Creating a new payments module and controller in the API Gateway project.
1:07:02 Comparing event-based approach with request-response message style.
1:09:07 Setting up a payments module and controller for the microservice
1:13:18 Annotations and validations in microservices
1:15:16 Communicating between microservices using NATS and TCP connection
1:19:22 Setting up NATS for emitting and receiving events
1:21:18 Demonstration of microservices communication and event handling
1:25:10 Configuring SQL Server and connecting to database
1:27:26 Installing RM and database driver for SQL interaction
1:31:46 Setting up TypeORM entities for creating database tables
1:33:48 Setting up user entity with decorators and TypeORM module
1:38:44 Registering user service and entity in Nest.js module
1:40:59 Creating and saving user data to the database
1:45:15 Create and share entities as npm packages for reusability
1:47:24 Creating a payments service and interacting with payments table
1:51:35 Nest.js allows creating asynchronous microservices that don't depend on each other.
1:53:38 Establishing one-to-many relationship between users and payments entities in Nest.js Microservices
1:57:27 Registering user and payment entities in Nest.js app module and microservice project
1:59:52 Adding user ID as a requirement for creating payments
2:03:56 Destructuring and handling fields from the create payment DTO and interacting with the users microservice.
2:06:12 Using Nest.js to grab user data from the database and send messages to user microservice.
2:10:21 Logging and creating payment in sequential order
2:12:24 Logging and handling of user events in microservices
2:16:34 Using relations to grab all payments of a user from a shared database.
2:18:39 Implementing microservice architecture with Nest.js, NATS, SQL, and Docker.
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[bugraotken]

It's very nice to see a dedicated Nest.js youtube channel even for a frontend developer like me =) thank you Anson for these precious videos about Nest.js! <3

[notabotlul]

thanks for this tutorial man, I really appreciate it

[xVantwoutMaarten]

Anson this is awesome! Really enjoying this one!

[mykolatokariev]

Very nice explanation. The schema at the beginning was very helpful. Before watching this video, I had also created a similar architecture, but I wasn't aware of microservices in NestJS, so I used sockets for asynchronous communication.

[jagajaga]

Hello Anson! Thank you for such an amazing lesson, I really appreciate your work!

[overrevvv]

Thank you so much for this insightful video.

[AmarjargalB]

nice2 🤓 super easy to understand. Thank you.🤗.

[andrejkling]

I love sqlzzz too 🔥💯 thank you so very much Anson for cool tutorial…🎉 very excited. We are waiting for cool project 🔥🔥🔥💯

[PatalJunior]

I think for the mysql probably the best thing would be to create a docker network instead of exposing ports

[PatalJunior]

I'm curious how scaling works with micro-services, how do you keep the data synced if you are horizontally scaling ?
MySQL replication with K8s, would that be it ? (If not all of them are connecting to the same database, sure this is probably really overkill, I'm just curious)

[oleksiishkulipa]

what the difference between RabbitMQ & NATS ? when do you recommend pick NUTS or RabbitMQ ? thank you

[kegxldx]

Thanks for the nice tutorial. Your editor's font looks awesome. Would you mind to share the font name :)

[mvpovnv]

Very useful tutorial and excellent explanation, I did same with postgres, everything work fine, but nestjs_db doesn't appear on pgAdmin, is it normal?

[mkopoku]

Awesome tutorial! Quick question...do the DTO's have to be classes or will the validation annotations still work even if they are represented as a TypeScript interface instead?

[ObulRakhim]

nestjs microservice "exception filters" code structure ??

[mykolatokariev]

Hey, Anson, how do I send some data to the API gateway from microservice correctly? It seams that NATS is not the best way to send the data.

[lfqnipt]

Thank you very much for this video. I have a small question. I'm new in microservice world. Suppose i want to setup authentication or authorization through this way of Nats, will i have to do it on the http api gateway or to something else like other microservice? Best regards 🙏

[mykolatokariev]

Nice video. Btw. do you know how to avoid a duplication of the DTOs in the http-api-gateway and in the microservices?

[ObulRakhim]

You forgot to specify how to install Exception filters in miceoservice. please give me a manual too