A system for storing and retrieving configuration data causes time-based and content-based indexes to be stored on a storage service. The system receives a request to identify the value of a property during a time period indicated by the request. The system retrieves, from the storage service, a time-based index associated with the time period. The retrieved time-based index is searched to identify a content index associated with the time period. The system retrieves the content index from the storage service, and searches the content index to identify a value, of the property, that is associated with the time period. The system generates a response to the request based on the results of the search of the content index.