Unable to prevent reading from the Cache

The current implementation will always check the cache regardless of what value is passed in for the `ttl`.

Currently in the file `/src/HTTPCache.ts` on line `78` there is no check of `ttl` before reading from the cache:

```
const entry = await this.keyValueCache.get(cacheKey);
```

The ask would be to provide a conditional check on this line to bypass the read from the cache if `ttl=0` as it is currently impacting the reported miss rate when trying to only inspect the miss rate for queries/request where the cache is actively used.

Start in src/HTTPCache.ts at line 78 and inspect how ttl is handled before the cache read. Verify that ttl=0 bypasses the cache lookup while cache-enabled requests retain their current behavior, then confirm the resulting miss-rate behavior.

Written by the indexing model from the issue text.