Don't we have something like this with the idea from @lsmith77 to use proxy services?

@dlsniper what do you mean excatly. The DIC is used to prevent instatiating anything (ie Doctrine, Session) when you don't need it. There must be something I don't get.

@dlsniper All services are created only on first use. The issue is that the profiler is called on each page, as I said in the other PR discussion.

@mvrhov something like what @lsmith said but for configuring them, configuration parsing and so on.

@vicb / @stof I wasn't very clear. Doctrine/Session are indeed lazy loaded but their configuration step still takes place when the request is done, no? Or am I wrong here?

@dlsniper what do you call configuration ? Extension configurations are processed only once (on cache generation), thinking of something else ?

Closing this as @vicb is right, too much caching to consider at that time :)