What is the meaning of using proxy ( dynamic proxy) in spring framework?

java spring dynamic-proxy
Linh picture Linh · Feb 9, 2010 · Viewed 32.8k times · Source

I don't know the meaning of using proxy in spring. what is efficient?

Answer

Bozho picture Bozho · Feb 9, 2010

Proxies are used by AOP. In short:

Normally you have.

Caller --> Real object

But when, for example, you want automatic transaction management, spring puts a proxy of your real object

Caller --> Proxy --> Real object

where the proxy starts the transaction.

Here is nice article explaining both the essence of proxies and their efficiency (performance) in spring

Related questions

What's the difference between @Component, @Repository & @Service annotations in Spring?

Can @Component, @Repository and @Service annotations be used interchangeably in Spring or do they provide any particular functionality besides acting as a notation device? In other words, if I have a Service class and I change the annotation from @Service …

Read More
How to configure port for a Spring Boot application

How do I configure the TCP/IP port listened on by a Spring Boot application, so it does not use the default port of 8080.

Read More
How can I inject a property value into a Spring Bean which was configured using annotations?

I have a bunch of Spring beans which are picked up from the classpath via annotations, e.g. @Repository("personDao") public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao { // Implementation omitted } In the Spring XML file, there's a PropertyPlaceholderConfigurer defined: <bean …

Read More