Function invalidate

invalidate(prefix: string, options?: { kv?: KVStorage }): Promise<number>
Deletes every cache key that starts with prefix.
Parameters
- prefix: string
  Key prefix to clear (e.g. user: or tickets:list:)
- options: { kv?: KVStorage } = {}
  KV override
Returns Promise<number>
The number of keys deleted
Throws
If no KV store is available

Since
1.2.4
Example
```
await invalidate(`tickets:list:`); // after a ticket write
```
- Defined in src/cache.ts:116