Frontend & browser·State, data and re-rendering
two screens asking for the same data shared one request because they named it the same way.
Query key
Also calledcache key
The identifier under which a cached request is stored, usually including every parameter the request depends on. It is what makes deduplication, revalidation and targeted invalidation possible without a manual cache. Getting it wrong in either direction hurts: a key missing a parameter serves one user's data to another, and a key including something volatile refetches on every render.