Number of concurrent connections, what is concurrent connection?

Concurrency, a computer network term, refers to the number of connections that access a server site at the same time.

Since web hosting is based on multiple users per server, that is, multiple users share a single server. In order to prevent the number of IIS links of a user on the same server from being too large or occupying too many server resources, which will affect the normal use of other users.

As a result, all virtual space providers currently limit the number of IIS connections, traffic, and CPU usage for server processes for a single user. When a user's site exceeds the server setting, the server is busy, or the number of people visiting the site is too large and the processing capacity of the web is exceeded.

The number of concurrent connections refers to the ability of the firewall or server to process its business traffic.

The maximum number of concurrent connections that can be processed at the same time through the firewall. It reflects the firewall device's ability to control access to multiple connections and track the connection status. The size of this parameter directly affects the maximum number of information points that the firewall can support.

The number of concurrent connections represents an important indicator of firewall performance. As can be seen from the instructions for use of common firewall devices, there are several orders of magnitude differences from tens of thousands or hundreds of thousands of concurrent connections to high-end devices from 500 or 1000 concurrent connections from low-end devices.

The number of concurrent connections is the number of available connection channels supported by the [Concurrent] system at the same time.

The number of requests generally refers to the number of requests to the client to establish a connection (the request may not be successful).

The number of concurrent users refers to the number of users who use the system at the same time (one user may have one or more connections).

The number of concurrent connections refers to the server's ability to process its business traffic and the number of point-to-point connections that the server can process at the same time.

For example, if the number of concurrent connections is 10, it means that there are up to ten connections to the server at the same time, if there is only one request, it means that up to 10 people will open this at the same time, and if there are 11 people open this at the same time, the 11th request will wait until the previous connection is disconnected.

1. Maximum number of concurrent connections: The ability of the firewall or the server to process its business information flow is the maximum number of point-to-point connections that the firewall can handle at the same time

2. Maximum number of sessions: All users want to access the Internet through the firewall, and the state that occurs when many windows or web pages are opened is called a session, and the maximum limit that the firewall can handle is the maximum number of sessions.

Both have the same meaning, but different names.