Abstract: Exemplary methods, apparatuses, and systems include duplicating a packet within a plurality of packets to be transmitted to a destination computing node as a sequence of packets. The plurality of packets including the duplicate of the packet are transmitted to the destination computing node. Upon receiving a first acknowledgement of the packet from the destination computing node, it is determined that the first acknowledgment is directed to a duplicated packet. In response to determining that the first acknowledgment is directed to a duplicated packet, it is determined that a second acknowledgement has yet to be received for each of one or more packets within the plurality of packets transmitted prior to the packet. In response to determining that the second acknowledgement has yet to be received, the one or more packets are retransmitted to the destination computing node.

Abstract: A system and method are provided for processing network requests by a programmable delivery network. The method includes receiving client code snippets that include identity information of origin servers and standard responses for network requests. The system configures and causes programmable content delivery nodes to execute the client code snippets to respond to the network requests. In response to receiving the network requests, the method includes buffering and sending the requests to origin servers. The method further includes, while buffering the requests, obtaining and outputting responses to the requests by causing the programmable content delivery nodes to process the requests. The method also includes receiving responses from the origin servers and reconfiguring the programmable content delivery nodes to execute the client code snippets to respond to the network requests based on the received responses.