n+1

The N+1 problem is a common issue in database querying. It occurs when an application retrieves a list of items (N items) and then makes an additional database request for each item to get related information. This results in one initial query plus N separate queries, which can slow down performance significantly. For example, fetching a list of users and then separately retrieving their orders causes multiple database calls. Efficient strategies involve rewriting queries to get all necessary data in fewer requests, improving speed and reducing load on the database.