Bit rate reduction processing method for data file, and server

A server comprising one or more processors, memory coupled to the one or more processors and a plurality of programs stored in the memory, wherein the plurality of programs, when executed by the one or more processors, cause the server to perform a plurality of operations comprising:

• receiving, by the server, an upload application request sent by a first client, the upload application request being used to request to upload a first original data file to the server and generated in response to a request by a first user at the first client to share the first original data file with a second user at a second client, wherein the first user and the second user each have a user account at a social networking platform;
• querying, by the server, for an instant-transmission index according to the upload application request, the instant-transmission index being used to record association information of file identifiers (fileids) of a plurality of original data files, including a first original data file and a second original data file, and fileids of corresponding bit rate reduction data files, including querying a storage warehouse that stores the instant- transmission index whether the first original data file is already stored in the storage warehouse and has a corresponding first bit rate reduction data file having similar content as the first original data file but having a smaller file size than the first original data file, wherein the first original data file and the corresponding first bit rate reduction data file are recorded as being associated in the instant-transmission index;
• sending, by the server, a first instant-transmission hit instruction to the first client when the instant-transmission index records association information of a first fileid of the first original data file and a second fileid of the corresponding first bit rate reduction data file, the first instant-transmission hit instruction comprising the second fileid, wherein the first client sends the second fileid to the second client;
• receiving, by the server, a first download application request sent by the second client, the first download application request comprising the second fileid obtained by the second client from the first client;
• obtaining, by the server, the first bit rate reduction data file according to the second fileid, and sending the first bit rate reduction data file to the second client;
• before receiving, by the server, the upload application request sent by a first client:
• obtaining, by the server, the plurality of original data files from a data file library;
• re-encoding, by the server, the plurality of original data files respectively, to obtain a plurality of bit rate reduction data files;
• storing, by the server, the plurality of original data files and the plurality of bit rate reduction data files into a storage warehouse, and updating association information of the fileids of the plurality of original data files and the fileids of the corresponding bit rate reduction data files to the instant-transmission index;
• after querying, by the server, for an instant-transmission index according to the upload application request:
• sending, by the server, a second instant-transmission hit instruction to the first client if the instant-transmission index records the first fileid of the first original data file and a first bit rate reduction data file corresponding to the first original data file does not exist in the storage warehouse, wherein the second instant-transmission hit instruction comprises the first fileid, and the first client sends the first fileid to the second client;
• receiving, by the server, a second download application request sent by the second client, wherein the second download application request comprises the first fileid obtained by the second client;
• and
• obtaining, by the server, the first original data file from the storage warehouse according to the first fileid, and sending the first original data file to the second client.

A non-transitory computer readable storage medium storing a plurality of machine readable instructions in connection with a server having one or more processors, wherein the plurality of machine readable instructions, when executed by the one or more processors, cause the server to perform a plurality of operations including:

• receiving, by the server, an upload application request sent by a first client, the upload application request being used to request to upload a first original data file to the server and generated in response to a request by a first user at the first client to share the first original data file with a second user at a second client, wherein the first user and the second user each have a user account at a social networking platform;
• querying, by the server, for an instant-transmission index according to the upload application request, the instant-transmission index being used to record association information of file identifiers (fileids) of a plurality of original data files, including a first original data file and a second original data file, and fileids of corresponding bit rate reduction data files, including querying a storage warehouse that stores the instant- transmission index whether the first original data file is already stored in the storage warehouse and has a corresponding first bit rate reduction data file having similar content as the first original data file but having a smaller file size than the first original data file, wherein the first original data file and the corresponding first bit rate reduction data file are recorded as being associated in the instant-transmission index;
• sending, by the server, a first instant-transmission hit instruction to the first client when the instant-transmission index records association information of a first fileid of the first original data file and a second fileid of the corresponding first bit rate reduction data file, the first instant-transmission hit instruction comprising the second fileid, wherein the first client sends the second fileid to the second client;
• receiving, by the server, a first download application request sent by the second client, the first download application request comprising the second fileid obtained by the second client from the first client;
• obtaining, by the server, the first bit rate reduction data file according to the second fileid, and sending the first bit rate reduction data file to the second client;
• before receiving, by the server, the upload application request sent by a first client:
• obtaining, by the server, the plurality of original data files from a data file library;
• re-encoding, by the server, the plurality of original data files respectively, to obtain a plurality of bit rate reduction data files;
• storing, by the server, the plurality of original data files and the plurality of bit rate reduction data files into a storage warehouse, and updating association information of the fileids of the plurality of original data files and the fileids of the corresponding bit rate reduction data files to the instant-transmission index;
• after querying, by the server, for an instant-transmission index according to the upload application request:
• sending, by the server, a second instant-transmission hit instruction to the first client if the instant-transmission index records the first fileid of the first original data file and a first bit rate reduction data file corresponding to the first original data file does not exist in the storage warehouse, wherein the second instant-transmission hit instruction comprises the first fileid, and the first client sends the first fileid to the second client;
• receiving, by the server, a second download application request sent by the second client, wherein the second download application request comprises the first fileid obtained by the second client;
• and
• obtaining, by the server, the first original data file from the storage warehouse according to the first fileid, and sending the first original data file to the second client.