Types of Requests GET, POST, PUT, PATCH, DELETE

To connect with our server, we send different types of requests.

1. GET Request – Fetch Data from Server

• The GET request is used to retrieve (fetch) information from a server.
• This is the most commonly used request when an application needs to read data without making any changes to it.

📌 Example Use Cases:
✅ Fetching a user profile from a database.
✅ Retrieving a list of posts from a blog.
✅ Getting weather updates from an API.

📌 Example Request:

This will fetch the data of a user with ID 123 from the server.

📌 Example Response from Server:

2. POST Request – Add New Data to Server

• The POST request is used when we want to send new data to the server and store it in a database.
• Unlike GET, a POST request modifies the server’s data.

📌 Example Use Cases:
✅ Signing up a new user.
✅ Adding a new blog post.
✅ Submitting a contact form.

📌 Example Request:

• This will create a new user with the given details in the database.

📌 Example Response from Server:

3. PUT Request – Update Entire Data

• The PUT request is used to update an entire record in the server.
• If a record exists, it gets updated; if not, a new record is created.
• All fields must be included in the request, even if only one value is being changed.

📌 Example Use Cases:
✅ Updating user profile information.
✅ Replacing old product details with new ones.

📌 Example Request:

• This will replace the entire user record in the database.

📌 Example Response from Server:

4. PATCH Request – Update Specific Fields

• The PATCH request is similar to PUT but only updates specific fields instead of replacing the entire record.
• This is useful when only a few changes are needed instead of resending the entire dataset.

📌 Example Use Cases:
✅ Updating only the email of a user.
✅ Changing only the price of a product.

📌 Example Request:

• This will only update the email of the user and keep other details unchanged.

📌 Example Response from Server:

5. DELETE Request – Remove Data from Server

• The DELETE request is used to remove a specific resource from the server.
• Once deleted, the data cannot be retrieved unless the system has a backup.

📌 Example Use Cases:
✅ Deleting a user account permanently.
✅ Removing a blog post from a website.
✅ Deleting an order from a shopping cart.

📌 Example Request:

• This will delete the user with ID 123 from the server.

📌 Example Response from Server:

Summary Table – Quick Comparison

Request Type	Purpose	Example Use Case
GET	Fetch data from server	Get user profile, retrieve blog posts
POST	Add new data to server	Create a new user, add a new post
PUT	Replace entire data	Update all details of a user
PATCH	Update specific fields	Change only the email or password
DELETE	Remove data from server	Delete a comment, remove an order