A concurrent in-memory key-value store in C++ built to to explore locking strategies and scalability tradeoffs.

concurrent-kv is a small systems project focused on learning about:

• Thread safety in data structures that are shared
• Lock contention and how it affects throughput
• Benchmarking within C++

The project begins with a std::unordered_map protected by a global mutex and will evolve toward sharding and other forms of synchronization strategies. The goal is to start with correctness and iterate toward more scalable and realistic designs.

• Single std::unordered_map<uint64_t, uint64_t>
• One std::mutex
• Thread-safe put, get, and erase

make

make run

make bench