Backend Development

Backend development serves as the foundation for modern web applications, facilitating the creation of dynamic and interactive user experiences.

It focuses on server-side logic, databases, and application programming interfaces (APIs), managing data processing, storage and retrieval to ensure the frontend receives the necessary information.

Server-side applications are typically hosted on physical or virtual machines, often running Linux, alongside databases that store and manage the application's data.

Common programming languages for backend development include JavaScript, PHP, Go, Java, Python, and Ruby. Popular frameworks include Express, Laravel, Django, Spring, and Ruby on Rails.

Request Handling

Backend development is primarily focused on handling requests from clients (e.g., web browsers, mobile apps) and processes them to generate appropriate responses. Some server-side applications generate HTML pages for these requests, while others offer APIs (Application Programming Interfaces) that provide data in formats like JSON.

   +-----------+        +------------+        +-----------+        +----------+
   |   User    |        |   Browser  |        |   Server  |        | Database |
   +----+------+        +-----+------+        +-----+-----+        +-----+----+
        |                     |                     |                    |
        |   Click Button      |                     |                    |
        |-------------------> |                     |                    |
        |                     |   Send Request      |                    |
        |                     |-------------------->|                    |
        |                     |                     |                    |
        |                     |                     |  Query Data        |
        |                     |                     |------------------->|
        |                     |                     |                    |
        |                     |                     |<-------------------|
        |                     |                     |  Return Data       |
        |                     |                     |                    |
        |                     |   Return API Data   |                    |
        |                     |<--------------------|                    |
        |    Update UI        |                     |                    |
        |<--------------------|                     |                    |