Method key

src/leveldb/util/cache.cc:55–61

  char key_data[1];  // Beginning of key

  Slice key() const {
    // next_ is only equal to this if the LRU handle is the list head of an
    // empty list. List heads never have meaningful keys.
    assert(next != this);

    return Slice(key_data, key_length);
  }
};

// We provide our own simple hash table since it removes a whole bunch