KVN (Key Value Notation) is a JSON backed, simple to use, key value storage solution for .NET.

var settings = new DatabaseSettings("./path/to/file.json");
var instance = new DatabaseInstance<MyPoco>(settings);

long id = 1;

var poco = new MyPoco { Value = "Hello, .NET!" };

instance[id] = poco;

// call .SaveChanges to commit your changes.

instance.SaveChanges();

Console.WriteLine(instance[id]); // Hello, .NET!

KVN aims to be thread safe, fast, and easy to use.