Software Developers Training Course by Liwei Wang

• The purpose of this project is for training, which demonstrates the technologies used in backend web application.
• Please note: The code can be used freely, but PLEASE KEEP THE LICENSE INFORMATION at the top of the programs.
• THE CODE CAN NOT BE USED FOR COMMERCIAL PURPOSE.

The technologies and tools used

• Frameworks: Spring/Spring Boot, Hibernate.
• Tools: Entity scanner, JUnit, Mockito, Docker, Flyway, Maven, Git, Logger, Postman.
• Database: Postgres.
• The third-party API integration: AWS S3, AWS SQS and SendGrid.
• OOD Principles: DI, Design patterns and S.O.L.I.D. principles are applied.
• Application Security: JWT and Filter are used for Authentication and Authorization.
• Servlet, Listener are implemented for the demonstration.
• Redis for caching
• Centralized and customized exception handling
• Implemented the Object Properties Filter that can hide properties(data) of objects dynamically based on the user's role.

Branch information

• master branch maintains the latest code
• warmup_branch maintains the java models, jdbc, unit test
• hibernate_branch maintains hibernate implementation
• springBoot_branch maintains controllers implementation
• jwt_branch maintains security implementation
• aws-s3-sqs_branch maintains aws and third party implementation

JVM options

• Configurations are defined through JVM Options.

-Ddatabase.driver=org.postgresql.Driver

-Ddatabase.dialect=org.hibernate.dialect.PostgreSQL9Dialect

-Ddatabase.url=jdbc:postgresql://localhost:5432/

-Ddatabase.user=User Name

-Ddatabase.password=User Password

-Dlogging.level.org.springframework=INFO

-Dlogging.level.org.liwei=TRACE

-Dserver.port=8080

-Dsecret.key=Token Key

-Daws.accessKeyId=Your AWS Access Key

-Daws.secretKey=Your AWS secret Key

-Daws.queue.name=Your Queue Name

-Dfile.download.dir=The file location for download

-XX:AutoBoxCacheMax=1024

-Xmn1G

-Xmx1G