useCache

useCache

Read the API Reference »

---

Introduction

This hook allows us to manipulate the passed request’s Cache and receive change callbacks. It is important to make sure that cacheKey is not affected by auto-generation – that there is a stable connection between the hook's request and the cache.

const { data, error, loading, refetch, onSuccess, onError, onFinished } = useCache(getUsers);

onSuccess((payload) => {
  console.log(payload); // [ User, User, User ]
});

onError((error) => {
  console.log(error); // { message: string }
});

onFinished(([payload, error, status]) => {
  console.log(payload); // [ User, User, User ] | null
  console.log(error); // { message: string } | null
  console.log(status); // 200 / 400 / 404 / 500 ...
});

---

Options

Configuration options for this hook provided as a second parameter.

const { ... } = useCache(request, options)

{
  deepCompare: boolean | typeof isEqual;
  dependencyTracking: boolean;
  initialData: {
  ...params1: ResponseReturnType<Response, Error, Adapter>;
  ...params2: ResponseDetailsType;
  cacheTime: number;
  clearKey: string;
  garbageCollection: number;
}[data] | null;
}

---

Returns

Returned values from this hook.

const values = useCache(request);

{
  isFocused: boolean;
  isOnline: boolean;
  setFocused: (isFocused: boolean) => void;
  setOnline: (isOnline: boolean) => void;
}