What are Query Parameters?

Query parameters are key‑value pairs appended to a URL after ? to carry state for filtering, sorting, search, and routing.

When to use Query Parameters?

- List filters, pagination, search terms, and tracking parameters

- When you need deep links and shareable UI stateWhen not to use Query Parameters?

- When sensitive data might leak to clients, logs, or referrers

- When URL length or readability becomes an issueWhat is the anatomy of Query Parameters?

- Key‑value encoding and URL encoding

- Common schema: ?q=, &page=, &sort=

- State synchronization with back‑forward navigation