A method includes receiving a message push request. The message push request includes message content to be sent to one or more users. The method further includes providing the message content to a cluster-based storage service system to store when a size of the message content is over a limit, receiving, from the cluster-based storage service system, an identifier for identifying the message content in the cluster-based storage service system, generating and sending a service message carrying the identifier of the message content to a terminal device associated with one of the one or more users, and sending a download address of the message content in the cluster-based storage service system to the terminal device in response to a download request.