Summary

In this chapter, we learned about all the changes v5 might bring to React Query. By now, you should know about the support changes you will need to be aware of in your browser and understand why we’ve always followed the object format throughout the book.

You’ve seen why logger was removed and understand why renaming loading to pending makes more sense.

Speaking of renaming, you won’t be confused again because gcTime is a more accurate word than cacheTime, and HydrationBoundary represents better what it does than Hydrate.

You’ve learned that for paginated queries, the placeholderData option is the way to go and that keepPreviousData was removed.

Finally, you were introduced to a new way to perform optimistic updates without updating your cache and found a way to save memory in your infinite queries, by leveraging the maxPages option.

As you may recall from what I said previously, this was tested in an alpha version of React Query...