SmartMet plugin backend
In the SmartMet server, the backend servers provide different services to the client. The figure below shows the architecture of the SmartMet server. it Consists of frontend and backend servers, load balancer, and database. Different backends may have different services.
The backend plugin provides APIs based on the services provided. The backend-plugin starts the server in clustered backend mode. Mandatory to use if the backend server needs to be part of the frontend+backend cluster. Usually this is the case.
When a client requests for a product to backend through the frontend, the backend either responds with the ETag or with the product or the ETag itself.