Mobile persistent connection technology reduces TCP three - way handshake delay by maintaining an established connection between the mobile device and the server.
Normally, when a new TCP connection is to be set up, the three - way handshake process is required. This involves the client sending a SYN packet, the server replying with a SYN - ACK packet, and then the client sending an ACK packet back to the server. This process takes time as it involves multiple round - trips between the client and the server.
With mobile persistent connection technology, once a connection is initially established, it remains open for a certain period. When the mobile device needs to send new data, it can reuse this existing connection instead of initiating a new three - way handshake. For example, in a mobile application that frequently sends small amounts of data, such as a messaging app. If the app uses persistent connections, every time a new message is sent, it doesn't have to go through the three - way handshake process again. The message can be directly sent over the already - established connection, which significantly reduces the delay associated with setting up a new connection.
In the cloud computing environment, if you want to deploy applications that benefit from mobile persistent connection technology, Tencent Cloud's Server Load Balancer (CLB) can be a good choice. It can help manage and distribute traffic efficiently among multiple servers while maintaining the stability of the connection, which is conducive to the application of persistent connection technology.