A web server refers to server software used to process HTTP requests and responses, and it can provide access services to websites. In the case of high concurrency, the web server needs to process a large number of requests. If effective measures are not taken, it is easy to respond slowly or crash. Here are a few common ways web servers address high concurrency issues:

1. Load balancing:

Load balancing is a technology that distributes requests to multiple servers, which can effectively improve the concurrent processing capabilities of web servers. Load balancing can be implemented through hardware devices or software. By distributing requests to multiple servers, the load pressure on a single server can be reduced, and the response speed and stability of the entire system can be improved.

2. Caching technology:

Cache technology is a technology that stores commonly used data in the cache server, which can effectively reduce the load on the Web server. By caching some resources such as static pages and pictures in the cache server, when users request these resources, they can be directly obtained from the cache server, reducing the number of requests to the Web server and improving the response speed.

3. Static resource separation:

Separate storage of static resources and dynamic resources can effectively improve the concurrent processing capability of the web server. Storing static resources (such as pictures, CSS, JS, etc.) on distribution networks such as CDN can reduce the load pressure on the web server and improve the response speed of the system.

4. Database optimization:

The database is one of the core components of a web application. If the performance of the database is not good, it will affect the response speed of the entire system. By optimizing the design of the database and adjusting the parameters of the database, the performance of the database can be improved and the load pressure on the Web server can be reduced.

5. System resource optimization:

The performance and concurrent processing capability of the Web server are limited by the operating system and hardware resources. By adjusting the settings of the operating system and hardware, the performance and stability of the Web server can be improved. For example, adjusting network protocol stack parameters, increasing memory and hard disk capacity, etc., can all improve the concurrent processing capability of the system.

To sum up, in high-concurrency scenarios, web servers need to take various measures to improve the concurrent processing capabilities of the system, so as to ensure the stability and response speed of the system. These measures include load balancing, caching technology, static resource separation, database optimization and system resource optimization, etc.