HTTP persistent connection
In HTTP persistent connection, or HTTP keep-alive, a single TCP/IP connection is used for multiple requests or responses. It has a huge performance improvement over the normal connection as it uses only a single connection instead of opening and closing connections for each and every single request or response. Some of the benefits of the HTTP keep-alive are as follows:
- The load on the CPU and memory is reduced because fewer TCP connections are opened at a time, and no new connections are opened for subsequent requests and responses as these TCP connections are used for them.
- Reduces latency in subsequent requests after the TCP connection is established. When a TCP connection is to be established, a three-way handshake communication is made between a user and the HTTP server. After successfully handshaking, a TCP connection is established. In case of keep-alive, the handshaking is performed only once for the initial request to establish a TCP connection, and no...
