[TIL] Nest.js Config, Schedule Module, and Concurrency Control

📌 What I learned

#1: Config Environment Variable Management

• Install npm i --save @nestjs/config cross-env joi.

• The ConfigService and ConfigType provided by ConfigModule can be used to access environment variables. ConfigType provides a type-safe way to read environment variables and makes it easier to manage environment variables for different functionalities.

• Reference site: Managing Environment Variables in Nest.js

• Initial environment setup for Nest.js projects: Nest.js Initial Environment Setup

#2: Nest.js ScheduleModule

• Learned about using Nest.js task scheduling technique to update the available_beds column with a default value every hour.

• Reference: Task Scheduling in Nest.js

#3: Concurrency Control Concepts

• Studied the concepts of concurrency control.

• Blog post: Concurrency Control: Why Do We Need It? Schedule Serializability, Recoverability

• Notion summary: Locking, BullQueue