Method for providing m2m data

A system for providing M2M data items to one or more M2M applications according to M2M data subscriptions, the system comprising:

• an M2M backend (BE) including:
• a subscription handler adapted to represent a data retrieval scheduler adapted identify a set of parameters representing the data items to be provided to the M2M applications, the set of parameters including a required update frequency for the data item and a weight representing an importance of the data item to the one or more M2M applications and/or to the BE, and
• a data retrieval scheduled adapted to determine a schedule for retrieving data items from the FE by the BE based on the weights of the data items, to determine that an actual period required to update each of one or more respective data items is larger than a required period corresponding to the required update frequency for each of the respective one or more data items and adding a penalty value to the weight of each of the respective one or more data items to provide updated weights for each of the respective one or more data items, and to modify the schedule based on the updated weights for each of the respective one or more data items such that an overall penalty is minimized and/or an overall actuality of the cached data is maximized,
• an M2M frontend adapted to retrieve data items from the FE,
• a data cache adapted to cache the data items retrieved from the FE, and
• an application notifier adapted to provide the cached data items to the one or more M2M applications.