static void Main(string[] args)
{
var user1 = new User { ID = 1, Name = "blqw", LoginName = "blqw1" };
var user2 = new User { ID = 2, Name = "blqw", LoginName = "blqw2" };
var user3 = new User { ID = 3, Name = "blqw", LoginName = "blqw3" };
var user4 = new User { ID = 4, Name = "blqw", LoginName = "blqw4" };
var user5 = new User { ID = 5, Name = "blqw", LoginName = "blqw5" };
var db = CacheStore<User>.Instance;
db.Add(user1);
db.Add(user2);
db.Add(user3);
db.Add(user4);
db.Add(user5);
var u1 = db.Get(1);
var u2 = db.Get(it => it.LoginName, "blqw2");
db.Remove(it => it.LoginName, "blqw3");
var u3 = db.Get(3);
db.Remove(4);
var u4 = db.Get(4);
}