The concept of front-end is generally used in banks, brokerages, and telecom operators. There are many background core processing systems in these places, which provide various interface services to the outside world. If I have some kind of business interface that needs to deal with their back-end system, to access their back-end system from our external network, these units are absolutely not allowed. At this time, they require you or themselves to develop a software, run it on their intranet, and then connect the computer running this software to your extranet system through a dedicated line or hardware isolation technology, then the computer running this software, from Functionally called the front end.
Front end function:
From the perspective of network and security, it has the function of isolating the host (an application that is placed outside the internal network and separates the internal network and the external network) to ensure that external applications cannot directly access core services, such as various external interfaces of banks (telecom agency fees, bank-securities pass).From a business point of view, the front-end provides a bridge between business channels and the host of core services. It generally plays the role of managing and scheduling transactions initiated by business channels, and can reduce the burden on the core back-end server through the invocation of the front-end computer. Of course, it also has the processing function of non-core business.
An independent processor system located between the server side and the client side of the application system, is responsible for data format conversion, connection management, peripheral scheduling of business flow management, peripheral processing, and handing business data to the background application service system for processing.
In the C/S concept, C and S are relative, although most of them are fixed, but they are also specified. For example, in the business application of a bank, the request cannot be sent from the back-end application server. Taking the example of proxy charging, the front-end is an application gateway. In fact, in the current application, the host becomes invisible due to the presence of the front-end.
The business systems at both ends of the government internal and external networks need data exchange, and front-end computers are arranged in front of their respective business systems to realize data exchange.
The front-end machine is a physical machine, and the front-end switching system is deployed. Responsible for caching the data that needs to be exchanged or exchanged into this server