Method and apparatus for processing service request

A method for processing a service request, comprising:

• receiving, by a Domain Name Server (DNS), a query request for querying a domain name of a server sent from a client;
• wherein the query request carries the domain name of the server to be queried and an IP address of the client;
• selecting, by the DNS, an Identification Gateway (IDGW) according to the domain name of the server in a random or alternate manner;
• and
• returning directly, by the DNS, a query response to the client according to the query request;
• wherein the query response carries a first identifier of the IDGW;
• the first identifier is used for the client to send a service request to the IDGW;
• the service request is used for the IDGW to convert the first identifier into a second identifier of the server and forward the service request to the server according to the second identifier, and for the server to return a service response message to the client in response to the service request,
• wherein after selecting the IDGW according to the domain name of the server in the random or alternate manner, and before returning directly the query response to the client according to the query request, the method further comprises:
• forwarding, by the DNS, the query request to the selected IDGW, wherein the query request is used for the IDGW to select the first identifier from a first identifier pool and establish a mapping relationship among the IP address of the client, the first identifier and the second identifier;
• and
• receiving, by the DNS, the first identifier selected by the IDGW.