Subscription and notification service

An apparatus comprising:

• a processor;
• and
• a memory coupled with the processor, the memory comprising executable instructions that when executed by the processor cause the processor to effectuate operations comprising:
• receiving a subscription request from a subscriber device for a first resource being a uniquely addressable element in a Resource Oriented Architecture (ROA) having a representation that can be manipulated via RESTful methods, wherein the subscription request comprises a first condition associated with statistical information;
• preparing, upon receiving the subscription request, a first notification criteria for the first resource and a first statistical information for the first resource, wherein the first notification criteria defines when an event notification is to be generated for the first resource;
• generating, based on detecting the first notification criteria has been met, a first event notification for the first resource;
• transmitting the first event notification to a notification target;
• updating the first statistical information based on the first condition after transmitting the first event notification;
• receiving a retrieval request to retrieve the first statistical information;
• and
• based on the retrieval request, sending a response, wherein the response comprises the updated first statistical information.