(int) env('SLOT_CACHE_FRESH_SECONDS', 5), 'availability_cache_ttl_seconds' => (int) env('SLOT_CACHE_TTL_SECONDS', 15), 'hold_ttl_minutes' => (int) env('SLOT_HOLD_TTL_MINUTES', 5), 'idempotency_cache_ttl_seconds' => (int) env('SLOT_IDEMPOTENCY_TTL_SECONDS', 300), 'idempotency_lock_seconds' => (int) env('SLOT_IDEMPOTENCY_LOCK_SECONDS', 30), 'idempotency_wait_seconds' => (int) env('SLOT_IDEMPOTENCY_WAIT_SECONDS', 1), ];