Distributed Key-Value Store with Replication

Project roadmap

1. 01

   Build the single-node key-value store

   ~2h

   Implement a basic in-memory store with get/set/delete operations exposed over a simple TCP protocol using serde for message encoding.

2. 02

   Implement primary-to-follower replication

   ~2.5h

   Have the primary node stream write operations to connected follower nodes as they occur.

3. 03

   Handle follower reconnection and catch-up

   ~2.5h

   Implement a simple log or snapshot mechanism so a reconnecting follower can catch up on missed writes.

4. 04

   Route reads and writes appropriately

   ~1.5h

   Ensure writes are only accepted by the primary while followers can serve read requests locally.

5. 05

   Test failure scenarios

   ~2h

   Write tests or a manual test harness simulating a follower disconnecting and reconnecting mid-stream.

Resources

• DocsThe Rust Book