This is the first Loopback 4 tutorial of a series explaining the LoopBack 4 framework components in detail for beginners. Almost 70% of the time is used to explain the concepts and 30% to start coding something. Once you watch the full video, you will understand rapidly the framework, its architecture and base components. I recommend you watch the full video if you are new or want to get more in depth information about it. If you find a typo or any error in the code or dialog, please feel free to comment so we all learn together.
Here is a short cut for the main parts of the video.
00:00 - Introduction
04:00 - Use cases
05:49 - Deployment types
08:40 - Application architecture
16:30 - Context - IoC Container
18:16 - Analyzing application.ts
23:44 - Analyzing the index.ts
25:42 - The REST Server
31:09 - Open API specification
39:24 - Installing LoopBack 4
41:52 - Scaffolding the LB4 hello application
43:50 - Creation the helloWorldController
46:48 - Adding a customized response OAS object
49:04 - Generating .yml and .json OAS files from command line
49:44 - Testing helloWorldController in PostMan from OAS file
52:17 - VSCode and acceptance test for HelloWorld controller
55:50 - MySQL table exposed thru LB4 - In depth in next lessons
01:01:8 - CRUD Controller testing from PostMan from OAS file
01:06:09 - Until the next lesson, enjoy!
![](https://s2.save4k.ru/pic/cgBCRY169qg/maxresdefault.jpg)