What HTTP methods do you know? How do PUT and PATCH differ?

Main HTTP methods:

• GET — retrieve a resource
• POST — create a new resource
• PUT — replace the entire resource
• PATCH — partially update the resource
• DELETE — delete the resource
• HEAD — get resource headers
• OPTIONS — find out supported methods

Difference between PUT and PATCH:

• PUT replaces the entire resource with a new representation. If fields are missing in the request, they will be deleted or reset.
• PATCH modifies only the specified fields, leaving others unchanged.

Example:

PUT /users/123
{
  "name": "Ivan",
  "age": 30
}

Replaces the entire user profile.

PATCH /users/123
{
  "age": 31
}

Only updates the age, other data remains unchanged.