Method exists

bolt/common/caching/AsyncDataCache.cpp:238–246

}

bool CacheShard::exists(RawFileCacheKey key) const {
  std::lock_guard<std::mutex> l(mutex_);
  auto it = entryMap_.find(key);
  if (it != entryMap_.end()) {
    it->second->touch();
    return true;
  }
  return false;
}

CachePin CacheShard::initEntry(
    RawFileCacheKey key,