Abstract: A method for data synchronization, includes: acquiring, by a target terminal, a locally pre-stored service domain name of a target server room, and transmitting, by the target terminal, a service request to the target server room through the service domain name; executing, by the target server room, a service operation corresponding to the service request, updating, by the target server room, a first database, and generating, by the target server room, a data change message; sending, by the target server room, the data change message to an associated server room of the target server room; and performing, by the associated server room, data synchronization based on the received data change message.

Abstract: A method for data synchronization, includes: acquiring, by a target terminal, a locally pre-stored service domain name of a target server room, and transmitting, by the target terminal, a service request to the target server room through the service domain name; executing, by the target server room, a service operation corresponding to the service request, updating, by the target server room, a first database, and generating, by the target server room, a data change message; sending, by the target server room, the data change message to an associated server room of the target server room; and performing, by the associated server room, data synchronization based on the received data change message

Abstract: The present disclosure provides a method for multi-group audio-video interaction, including: receiving a virtual group creation request initiated by a first user, creating a first virtual group, and determining a first session group the first user belonging to; associating the first session group with the first virtual group, and adding all session users in the first session group to the first virtual group; determining a second session group a second user belonging to, when receiving a virtual group join request initiated by the second user; associating the second session group with the first virtual group, and adding all session users in the second session group to the first virtual group; and sending a user list of the second session group to other session users in the first virtual group, to enable the other session users to incrementally pull and play an audio-video stream according to the user list.

Abstract: The present disclosure provides a method for multi-group audio-video interaction, including: receiving a virtual group creation request initiated by a first user, creating a first virtual group, and determining a first session group the first user belonging to; associating the first session group with the first virtual group, and adding all session users in the first session group to the first virtual group; determining a second session group a second user belonging to, when receiving a virtual group join request initiated by the second user; associating the second session group with the first virtual group, and adding all session users in the second session group to the first virtual group; and sending a user list of the second session group to other session users in the first virtual group, to enable the other session users to incrementally pull and play an audio-video stream according to the user list.