Multi-threading in web services ?

Do web services need threads ? And if yes, what do i have to do ?

Thanks,
Alex

You certain need to be aware of the fact that a web service may be handling many request = many threads "at the same time."

If your service is hosted in a HTTP container such as Tomcat, the container will manage the Thread which executes the request. The programmer just needs to use good practice to prevent interference between request.

Bill

So i don't need threads ? If i have 20+ operations that read from a db and returns values and hundreds of users using them, tomcat will handle everything ?

Tomcat will create a separate Thread for each request but it is up to you to control access to shared resources such as a database or any instance variable.

For example, it is always strongly recommended that you use a DB connection pool library - you certainly can't share one single DB connection with multiple simultaneous request.

Bill

I think i understand, the operations should not depend one on another, or on the same object.

Thanks, this was helpful.