Basic EJB knowledge,

Basic EJB knowledge,

My blog website: https://www.peretang.com/basic-knowledge-of-ejb/

What is EJB?

Portable, reusable, and scalable platform for business applications

 

Why select EJB

1. ease of use: the EJB container provides many services. Developers only need to pay attention to the business.

2. Integrate the solution suite to provide a large number of services by the Application Server

3. Open JavaEE standards

4. Extensive vendor support

5. Stable and high-quality code Basics

6. clusters, Server Load balancer, and Failover

7. Easy development of reusable components

 

Services provided by the EJB container

1. Integration

2. Pooling

3. Thread Security

4. State management (for stateful session beans)

5. Message Server (Message-driven bean)

6. Transactions

7. Security

8. interceptor

9. Remote Access

10. Web Services

11. Persistence

12. Cache

13. Performance Optimization

 

New Features of EJB3.X

1. simplified the design model of the program, based on POJO Design

2. Support Annotation

3. Support for dependency injection and JNDI

4. Simplified persistence API

5. POJO components for unit testing

 

Reference

EJB 3 in Action, Second Edition