Too Long; Didn't Read
React Query is a light caching layer that improves the developer experience and the user experience. The cache lives in memory, within your application, which means there is NO server or browser caching involved. Understanding why a query is in a certain state and when it will transition to a new state is crucial if you want to be proficient with React Query. Use the built-in dev tools to visualize the states of your queries and understand them to make learning and debugging easier. The staleTime and cacheTime play a crucial role in deciding the state of the query.