Methods and systems for sharing data among multiple services are described herein. Multiple services may access data from a shared data source. The services may subscribe to data sharing events. A data sharing service may iterate through the shared data source and transmit data retrieved from the shared data source in data sharing events. When the data sharing service reaches the end of the shared data source, the data sharing service may begin iterating through the shared data source again from the beginning. The data sharing events may be transmitted at a predetermined frequency. The services may subscribe to or unsubscribe from the data sharing events.