Function Key1

src/leveldb/issues/issue178_test.cc:18–22

const int kNumKeys = 1100000;

std::string Key1(int i) {
  char buf[100];
  snprintf(buf, sizeof(buf), "my_key_%d", i);
  return buf;
}

std::string Key2(int i) { return Key1(i) + "_xxx"; }