What are the characteristics of e-commerce websites?

From the user's point of view: E-commerce websites have diverse and complex user groups.

From a technical point of view, e-commerce websites have high concurrency, high availability and scalability. High concurrency means that users' requests can be processed in time and the throughput per second can reach the expected assumption. Just like the Double Eleven, there are many users at the same time. In order to be able to issue user requests, high concurrency must be achieved. Common high concurrency solutions include distributed deployment, cluster deployment and multi-activity in different places. High availability means that it can guarantee non-stop and several 9%. The common solution of high availability is server redundancy, which ensures that a server fails and does not affect the normal use of users. Scalability means that new requirements appear and can respond in time. Some characteristics of e-commerce websites are diversified requirements, continuous delivery and deployment, and new requirements development, which cannot affect the old functions.