Combination hibernate @Transactional & ehcache @Ca

问题:

While doing loadtesting on our application I noticed that if you use @Transactional and @Cacheable annotions that hibernate always creates a database transaction. Is there an easy way to prevent this? A more eleberate way to solve this within spring is to have following class/interfaces

• Servicelayer-interface
• Cacheable annotated class which is just a proxy/forward to
• Transactional annotation implentation class

What happens is the following

Call 1:

1. Transaction gets created
2. class method gets called
3. result cached & returned

Call 2:

1. Transaction gets created
2. Cached result gets returned

The prefered result should be:

Call 1:

1. Transaction gets created
2. class method gets called
3. result cached & returned

Call 2:

1. Cached result gets returned

回答1:

You need to change relative order of @Transactional and @Cacheable aspects.

It can be configured using order attribute of <tx:annotation-driven> and <cache:annotation-driven>. See 8.2.4.7 Advice ordering for the meaning of order values.