We intentionally set local-ttl to such a low value. Assume the following situation:
- You want to visit a domain that happens to be blocked
- You put it on the white list
- You try to visit the page again - it still fails (unless you manually flush the client's cache) because your client still caches the "blocked" behavior for another, say, 590 seconds
If we set local-ttl=2 the overall experience is improved as clients frequently re-query the domains.