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I'm implementing a webservice exposing an Apex Class.

I was reading understanding execution governors and limits and I dont see clear enough the limit for my @RestResource.

I only found some information about API Request Limit here. There says that the limit of request will be 1000/5000(Enterprice/Unlimited) per user licence.

However it is not clear if they are referring to Apex @RestResource or just force.com Rest and SOAP API

Having said that, *how many request can my RestApex WebService have *?

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@RestResource annotated apex classes are just like normal apex class and only difference is they expose the apex class as a HTTP GET,POST,PUT or PATCH web-service and hence all the governor limits applicable to the apex class context apply here .

These limits will be 50,000 queries in a context,150 DML,100 SOQL limit of context ,CPU limit ,Heap size limit etc ,all this generally apply .

Also since its a webservice its very important to consider there will be 3MB size limit for the response you return from the apex class.

Coming to the no of API calls ,each request will count against number of API calls and no of API calls allowed for your org depends on edition and as well as license .Also these API calls can be purchased from sfdc with some additional cost(Contact SFDC for same )

Before jumping into writing your custom apex rest service i would strongly recommend to use the standard REST API provided by sfdc ,if any of the API provided by sfdc meets the requirement i would use that as they are faster and have capability to automatically return data in chunks

http://www.salesforce.com/us/developer/docs/api_rest/

The above document link has reference and you will find explanation for standard REST services available out of box.If any of them dont fit then you will need to build apex REST service and an optimized code is necessary to avoid governor limits .

Update:

API limits

http://na1.salesforce.com/help/doc/en/integrate_api_rate_limiting.htm

For enterprise its 1K per licence for salesforce licence

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  • Thanks Mohith!, I have to use a apex rest service to make a complex data transformation from the original request into SF Object format. So, regarding to request to API calls, your anwser is 1k per user licence Enterprice edition, isn't?
    – Martin Borthiry
    Commented Sep 12, 2013 at 7:37
  • Yes its 1K per salesforce licence type .There are other licence with different numbers .I have updated my answer too:)
    – Mohith Shrivastava
    Commented Sep 12, 2013 at 7:49

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