This is the first time I hear about memgraph, its really interesting because I'm beginning a project that involves the analysis of some large graphs. Sometimes, before using a lib, I dig into the GitHub repo. So here, I viewed their implementation of a ring buffer (memgraph/src/data_structures/ring_buffer.hpp).

I was surprised with what I found, especially the sleep after adding an element and the loop just before a spin-lock. Not sure, if this is a good implementation, I hope if a more knowledgable person could explain to me this piece of code.

```

  template <typename... TArgs>
  void emplace(TArgs &&...args) {

    while (true) {
      {
        std::lock_guard<memgraph::utils::SpinLock> guard(lock_);
        if (size_ < capacity_) {
          buffer_[write_pos_++] = TElement(std::forward<TArgs>(args)...);
          write_pos_ %= capacity_;
          size_++;
          return;
        }
      }

      SPDLOG_WARN("RingBuffer full: worker waiting");

      // Sleep time determined using tests/benchmark/ring_buffer.cpp

      std::this_thread::sleep_for(std::chrono::microseconds(250));

    }
  }

```