const registry = new Registry();

// add a key with an object value to the registry
registry.set("user", {
    "name": "John Doe"
});

// add a key, which will expire in an hour
registry.set("token", "authtoken", 60*60);

registry.get("user");

registry.get("token");

registry.remove("user");

registry.remove("token");

registry.empty();