HTTP PATCH Method

PATCH /api/users/alice HTTP/1.1
Host: api.example.com
Content-Type: application/merge-patch+json
Authorization: Bearer token_abc

{
  "email": "alice.new@example.com",
  "phone": "+49 123 456789"
}

HTTP/1.1 200 OK
Content-Type: application/json

{
  "id": "alice",
  "name": "Alice Schmidt",
  "email": "alice.new@example.com",
  "phone": "+49 123 456789"
}

PATCH /api/articles/123 HTTP/1.1
Host: blog.example.com
Content-Type: application/json-patch+json

[
  {"op": "replace", "path": "/title", "value": "New Title"},
  {"op": "add", "path": "/tags/-", "value": "tutorial"},
  {"op": "remove", "path": "/draft"}
]

HTTP/1.1 200 OK
Content-Type: application/json

{
  "id": 123,
  "title": "New Title",
  "tags": ["tech", "api", "tutorial"]
}

PATCH /api/documents/doc-42 HTTP/1.1
Host: api.example.com
If-Match: "etag-abc123"
Content-Type: application/merge-patch+json

{"status": "published"}

HTTP/1.1 412 Precondition Failed
ETag: "etag-xyz789"

{
  "error": "Document was modified by another user",
  "current_etag": "etag-xyz789"
}