Summary: Cache requested resources locally and reuse them directly for subsequent requests as much as possible, reducing Http requests and significantly improving site and application...
By reusing previously acquired resources, you can significantly improve the performance of your web site and application. Web caching reduces wait time and network traffic,...
Web applications use browser/ Server architecture and HTTP as the communication protocol. HTTP is a stateless protocol, the browser's every request, the server will be...
1. HTTP Definition Hypertext Transfer Protocol (HTTP) is an application-layer Protocol that consists of requests and responses from clients to servers. 2. Main features of...
Two-handshake: the service sends ACK: x+1, SYN: 1, Seq: Y to receive a request packet. Then the SYN_RECV three-way handshake is initiated: Seq+ACK packets are...
1. RESTful Resources: Each resource has a specific URI(Uniform Resource Locator). The URI is the address or unique identifier of each resource. Representation layers: A...
Caching is a way to improve Web performance. By reusing previously acquired resources, caching relieves the pressure on the server and reduces the time for...
Fs module is the encapsulation of file operation, it provides file read, write, rename, delete, traverse directory, link and other POSIX file system operations, and...
Cross-origin Resource Sharing (CORS) is a mechanism of browsers that enables browsers to access resources from different sources without the restriction of the same Origin...
1. HTTP Features HTTP is an application-layer protocol based on TCP/IP. The default port number is 80. HTTP is connectionless and stateless. 2. HTTP packet...
HTTP request methods Function GET method POST method PUT method HEAD method DELETE method OPTIONS method TRACE method CONNECT Method Enter the URL from the...
HTTP server push, also known as HTTP stream, is a client-server communication mode that asynchronously pushes information from the HTTP server to the client without...
Background In business abstraction, it is common to abstract everything related to the current business into a single component. Such as the ability to select...
It is important to understand the HTTP status code and its meaning, especially when troubleshooting errors occurred during the interaction between the front-end and back-end...
Getting content over the web is slow and expensive. Large responses require multiple round trips between the client and server, which delays the browser getting...