postid

Postid is a term used to refer to an identifier that uniquely identifies a post within a software system, such as a blog, forum, or content management system. It is not a formal standard, and different platforms may use variations like postid, post_id, postId, or id. In many databases, the post identifier corresponds to the primary key of a posts table.

In web applications, postid is typically used in URLs, query strings, or form fields to reference a specific post for viewing, editing, deleting, or commenting. In RESTful APIs, the resource path often includes the post identifier, for example GET /posts/{postid} or GET /api/posts?id={postid}. The value can be a simple integer or a more complex value such as a UUID.

Data type and format vary: integers are common for in-house systems, while UUIDs or slug-based identifiers may be used for security or readability. Validation should ensure the value is the expected type and that the user has permission to access the referenced post. Systems should guard against injection and enumeration, and consider whether exposing sequential IDs is desirable.

Related concepts include naming variants (post_id, postId), slugs, and permalinks. Some platforms hide internal IDs behind opaque tokens or combine IDs with slugs for readability. Efficient querying often relies on indexing the post identifier.