Three-tier architecture BS architecture

The B/S structure simplifies the work of the client. It separates the transaction processing logic module of the two-layer C/S structure from the tasks of the client. The Web server forms a separate layer to shoulder its tasks, thus reducing the workload of the client.

pressure.

The three-layer architecture refers to the technical aspects of specific software design, including the data layer, logic layer, and interface layer.

The b/s mode software implemented using this layered design coding is the b/s three-layer architecture software.

For example, if the data access code is separated from the business logic layer, when the database server is changed, only the data access code needs to be changed, because the business logic layer is unchanged, so there is no need to change or recompile the business logic layer.

Load ratio: Since the B/S architecture management software is only installed on the server (Server), network managers only need to manage the server. The main transaction logic of the user interface is completely implemented on the server (Server) side through the WWW browser, with very few parts

The transaction logic is implemented on the front end (Browser). All clients only have browsers, and network managers only need to do hardware maintenance.

However, the application server has a heavy data load. Once the server "crash" and other problems occur, the consequences will be disastrous.

Therefore, many organizations have database storage servers just in case.