Update documentation (#191)

* Update documentation and fix keep-alive scheduler

* Update documentation

Author: letiendat1002

backend/README.md

@@ -9,6 +9,7 @@
     - [Spring Security](https://spring.io/projects/spring-security)
     - [Spring Web](https://spring.io/projects/spring-web)
     - [Spring Test](https://spring.io/guides/gs/testing-web/)
+    - More details please refer to [pom.xml](pom.xml)
 
 ## Requirements
 
@@ -20,10 +21,16 @@
 1. [MySQL Scripts](assets/databases/mysql)
 2. [Database Design](assets/images/database/database_design.png)
 3. [Spring Security Architecture](assets/images/security)
-4. [Documentation](docs)
 
 ## Documentation
 
-1. [Connect to database](docs/ConnectDatabase.md)
-2. [APIs](docs/APIs.md)
-3. [Role & Permission](docs/RolePermission.md)
+1. [Docs folder](docs)
+2. [Connect to database](docs/ConnectDatabase.md)
+3. [APIs](docs/APIs.md)
+4. [Role & Permission](docs/RolePermission.md)
+5. [Deployment](docs/Deployment.md)
+
+**Notice**:
+- To initiate the backend properly, please open this project in the `backend/` folder not the root `e-commerce/` folder.
+- To run the project locally, please refer to [Connect to database](docs/ConnectDatabase.md) for more details and remember to change `spring.profiles.active` in [application.yml](src/main/resources/application.yml) from `prod` to `dev` (default value is `prod`).
+- To deploy the project, please refer to [Deployment](docs/Deployment.md) for more details and remember to change `spring.profiles.active` in [application.yml](src/main/resources/application.yml) from `dev` to `prod`.

backend/docs/Deployment.md

@@ -0,0 +1,64 @@
+# Deployment Guide
+
+This guide outlines the steps to deploy Linkking project backend web services to a production environment.
+
+## Table of Contents
+
+- [Deploy MySQL](#deploy-mysql)
+- [Environment Variables](#environment-variables)
+- [Deploy Backend](#deploy-backend)
+
+## Deploy MySQL
+
+1. **Setup MySQL Server:**
+    - Install MySQL server on your hosting environment or use a cloud-based MySQL service provider.
+    - We recommend [aiven.io](https://aiven.io) for cloud-based MySQL hosting.
+    - Configure the MySQL server to allow remote connections if necessary.
+
+2. **Database Initialization:**
+    - Execute the provided SQL script [data_sample.sql](/assets/databases/mysql/data_sample.sql) to initialize the
+      database schema, necessary tables and sample data.
+
+## Environment Variables
+
+1. **Database Configuration:**
+    - `DB_HOST`: Hostname or IP address of the MySQL server.
+    - `DB_PORT`: Port number for MySQL server.
+    - `DB_USERNAME`: Username for accessing the MySQL database.
+    - `DB_PASSWORD`: Password for accessing the MySQL database.
+    - `DB_NAME`: Name of the MySQL database (if using sample data, use `myecommerce` as the database name)
+    - `DB_URL` with format `jdbc:mysql://<DB_USERNAME>:<DB_PASSWORD>@<DB_HOST>:<DB_PORT>/<DB_NAME>?ssl-mode=REQUIRED`
+
+2. **Other Configurations:**
+    - `API_URL`: Base URL for the deployed backend service (Assign API url after web service deployment).
+    - `MAIL_USERNAME`: Email address for sending emails.
+    - `MAIL_PASSWORD`: Password for the email address (Use
+      an [app password](https://support.google.com/accounts/answer/185833?hl=en) if using Gmail).
+
+## Deploy Backend
+
+This guide will help you deploy the Linkking project backend web services to [Render](https://render.com/).
+
+1. **Prerequisites:**
+    - **Docker Desktop:** Ensure you have Docker Desktop installed on your system.
+    - **Docker Hub Account:** Create an account on [Docker Hub](https://hub.docker.com/) if you don't have one already.
+
+2. **Build JAR files:**
+    - Run the following command to build the JAR file:
+        ```bash
+        mvn clean -DskipTests package
+        ```
+    - You can also run this command via IntelliJ IDEA by right-clicking on the project and
+      selecting `Run Maven` -> `New Goal...` -> `clean -DskipTests package`.
+
+3. **Build Docker Image and Deploy to Render:**
+
+    - For proper instructions, please refer to this blog
+      post: [How to host a Spring Boot application for free with Render](https://hostingtutorials.dev/blog/free-spring-boot-host-with-render) (You may skip to the **Building your docker image** section).
+    - Example commands used from above blog post (Assume you already in `backend/` directory):
+         ```bash
+         docker build -t linkking .
+         docker tag linkking letiendat1002/linkking
+         docker login -u letiendat1002
+         docker push letiendat1002/linkking:latest
+         ```