Function cached

cached<T>(
    key: string,
    fetcher: () => Promise<T>,
    options?: CacheOptions,
): Promise<T>
Returns a cached value for key, computing and storing it on a miss.

On a hit the stored value is returned (unless it has expired, in which case the entry is deleted and treated as a miss). A corrupt entry self-heals: it is deleted and the value is recomputed.
Type Parameters
- T
  Type of the cached value
Parameters
- key: string
  Cache key
- fetcher: () => Promise<T>
  Async producer invoked on a miss
- options: CacheOptions = {}
  TTL and KV override
Returns Promise<T>
The cached or freshly computed value
Throws
If no KV store is available

Since
1.2.4
Example
```
const user = await cached(`user:${id}`, () => loadUser(id), { ttl: 3600 });
```
- Defined in src/cache.ts:75