Server and method for providing content, and computer-readable storage medium for computer program

A method for providing, from a server, a plurality of contents corresponding to a marker in response to a request from a terminal, the server comprising a storage configured to store the plurality of contents therein, to store a sequence number of each of the plurality of contents corresponding to the marker, and to store a transmission status of each of the plurality of contents indicating whether or not the corresponding content has been sent, the method comprising:

• receiving a first request from a first terminal which has read the marker to send one of the plurality of contents corresponding to the marker to the first terminal;
• determining one of the plurality of contents corresponding to the marker to send to the first terminal, wherein the determining comprises determining, as the one of the plurality of contents to send to the first terminal, a content having a smallest sequence number from among contents of the plurality of contents having a transmission status indicating that the corresponding content has not been sent;
• performing a first transmission to send, to the first terminal which has read the marker and which sent the first request, the determined one of the plurality of contents stored in the storage;
• updating the transmission status of said one of the contents sent to the first terminal to indicate that said one of the contents has been sent;
• receiving a second request from a second terminal which has read the marker to send one of the plurality of contents corresponding to the marker to the second terminal;
• determining another one the plurality of contents corresponding to the marker to send to the second terminal, wherein the determining another one of the plurality contents comprises determining, as said another one of the plurality of contents to send to the second terminal, a content having a smallest sequence number from among contents of the plurality of contents having a transmission status indicating that the corresponding content has not been sent;
• and
• performing a second transmission to send, after performing the first transmission to send said one of the contents to the first terminal, said determined another one of the contents stored in the storage to the second terminal which has read the marker.

A non-transitory computer-readable storage medium having stored thereon a computer program that is executable by a computer of a server for providing a plurality of contents corresponding to a marker in response to a request from a terminal, the server comprising a storage configured to store the plurality of contents therein, to store a sequence number of each of the plurality of contents corresponding to the marker, and to store a transmission status of each of the plurality of contents indicating whether or not the corresponding content has been sent, the computer program causing the computer to perform processing comprising:

• receiving a first request from a first terminal which has read the marker to send one of the plurality of contents corresponding to the marker to the first terminal;
• determining one of the plurality of contents corresponding to the marker to send to the first terminal, wherein the determining comprises determining, as the one of the plurality of contents to send to the first terminal, a content having a smallest sequence number from among contents of the plurality of contents having a transmission status indicating that the corresponding content has not been sent;
• performing a first transmission to send, to the first terminal which has read the marker and which sent the first request, the determined one of the plurality of contents stored in the storage;
• updating the transmission status of said one of the contents sent to the first terminal to indicate that said one of the contents has been sent;
• receiving a second request from a second terminal which has read the marker to send one of the plurality of contents corresponding to the marker to the second terminal;
• determining another one the plurality of contents corresponding to the marker to send to the second terminal, wherein the determining another one of the plurality contents comprises determining, as said another one of the plurality of contents to send to the second terminal, a content having a smallest sequence number from among contents of the plurality of contents having a transmission status indicating that the corresponding content has not been sent;
• and
• performing a second transmission to send, after performing the first transmission to send said one of the contents to the first terminal, said determined another one of the contents stored in the storage to the second terminal which has read the marker.