Middleware supports the use of applications in a faster, more efficient, and high-quality manner. Its biggest advantage is that it acts as a bridge between the data and the users.
Thanks to middleware, users can perform their transactions in a more economical, fast and trouble-free manner. In fact, middleware may be among the most important software solutions of the future.
Middleware can be created to perform multiple functions. Among these, database procedures, transactions between apps, and data message control systems are just to name a few.
Protocols such as SOAP, REST and JSON can be used while creating middleware. The fact that the preferences can be changed depending on the purpose of the software provides flexibility.
When we categorize it in terms of its basic features, we come across five different levels of middleware.
- App-level middleware
- Router-level middleware
- Third party middleware
- Built-in middleware
- Error handling middleware.
When used for login control or logging purposes, they are generally created at the app level.
Middleware also appears in web frameworks such as Express.js. By defining itself as a middleware function, it makes it possible to execute the code, make changes in request and response objects, and call functions of the middleware in another layer.
Node.JS modules that have been created to perform functions such as Netjs and Moleculer can also be used.