Hello all, I am currently building my first RoR application. On the server side, I have a web service that will fetch some data from a third party provider and display it to the my user. I have a couple of question on best practices. I am using WSDL scanning which gives a lot of overhead a take couple of seconds to accomplish. I have my class that will deal with all the wweb service call in the model diectory. I called it postcode_anywhere_service.rb. My first question is: should it be a singleton (will that be scalable do you beleive?) I know this is somewhat a general question and would be happy to hear some advices. So I have this web_Service class defined in my model directory. In my controller (postcode_controller), I want to initialize postcode_anywhere_service.rb only once (per user? I am not sure which is best - should I initialize it once for all users or once per usere. Each user will have a couple of request...). I put it in the initialize definition of the postcode_controller. I beleive it should not be in there but can not find a best practise for initialization. Basically, if it can be scalable, I want to define each def in the postcode_anywhere_service to be self called. So I could use PostcodeAnywhreService.getAddress(postcode) for exemple without instantiating it each time. But for that I need to instantiate the class a first time before calling the above. What is the best solution to do so? Will it be scallabe? Thanks a lot for any comments, tutorials ect... Carl-Gustaf Harroch