Method for content distribution in a network supporting a security protocol
View Patent ↗The present invention is directed to a method of providing content distribution services while minimizing the processing time required for security protocols such as the Secure Sockets Layer.
1. A method of operating a content distribution network switch in a content distribution network comprising the steps of:
receiving a packet from a client associated with a secure communication connection;
extracting information from the packet to identify a cache server in the content distribution network that maintains state information on the secure communication connection, wherein the information extracted from the packet comprises a session identifier used to compute a label identifying the cache server;
directing the packet towards the identified cache server;
wherein the label identifying the cache server is computed from the session identifier by a function f(SID) where SID is the session identifier; and
wherein the function f(SID)=SID MOD n+1 where n is the number of cache servers that can store the state information on the secure communication connection.
2. The invention of claim 1 wherein the secure communication connection is a Secure Sockets Layer connection.
3. A method of operating a cache server in a content distribution network comprising the steps of:
selecting a session identifier that may be utilized by a content distribution network switch to direct packets associated with a secure communication connection to the cache server;
negotiating a secure communication connection with a client;
maintaining state information for said secure communication connection by said cache server;
wherein the session identifier is used to compute a label identifying the cache server using a function f(SID) where SID is the session identifier; and
wherein the function f(SID)=SID MOD n+1 where n is the number of cache servers that can store the state information on the secure communication connection.
4. The invention of claim 3 wherein the secure communication connection is a Secure Sockets Layer connection.