System and method for supporting one-way remote method invocation for session replication in a server cluster

A system for supporting in-memory session replication in a server cluster, comprising:

• one or more microprocessors,
• a primary application server running on the one or more microprocessors, wherein the primary application server is configured to receive a request associated with a session from a client;
• wherein the primary application server is configured to replicate session information associated with the session in the request to a secondary application server using an underlying transport protocol which comprises one-way remote method invocation (RMI) session replication based on a socket direct protocol (SDP) between a first SDP socket on the primary application server side and a second SDP socket on the secondary application server side, wherein the underlying transport protocol guarantees that the session information is transmitted to the secondary application server once a return message from a network socket associate with the underlying transport protocol is received at the primary application server, and wherein, in accordance with the underlying transport protocol,
• the primary application server initiates a send call to the first SDP socket to start transmitting the session information,
• the first SDP socket informs the second SDP socket that the session information is available,
• the secondary application server instructs the second SDP socket to receive the session data,
• the second SDP socket performs a read operation using remote direct memory access (RDMA) to read the session data from a buffer associated the primary application server,
• the second SDP socket informs the first SDP socket when read operation is completed, and
• the first SDP socket sends a return message to the primary application server, and
• the second SDP socket sends a return message to the secondary application server;
• and
• wherein the primary application server is configured to respond to the client based on the session information without waiting for an acknowledgement from the secondary application server.

A non-transitory machine readable medium having instructions stored thereon for supporting session replication in a server cluster, which instructions, when executed cause a system to perform steps comprising:

• receiving, via a primary application server, a request associated with a session from a client;
• replicating, via the primary application server, session information associated with the session in the request to a secondary application server using an underlying transport protocol which comprises one-way remote method invocation (RMI) session replication based on a socket direct protocol (SDP) between a first SDP socket on the primary application server and a second SDP socket on the secondary application server, wherein the underlying transport protocol guarantees that the session information is transmitted to the secondary application server once a return message from a network socket associated with the underlying transport protocol is received at the primary application server, and wherein, in accordance with the underlying transport protocol,
• the primary application server initiates a send call to the first SDP socket to start transmitting the session information,
• the first SDP socket informs the second SDP socket that the session information is available,
• the secondary application server instructs the second SDP socket to receive the session data,
• the second SDP socket performs a read operation using remote direct memory access (RDMA) to read the session data from a buffer associated the primary application server,
• the second SDP socket informs the first SDP socket when read operation is completed, and
• the first SDP socket sends a return message to the primary application server, and
• the second SDP socket sends a return message to the secondary application server;
• and
• responding, via the primary application server, to the client based on the session information without waiting for an acknowledgement from the secondary application server.