public void epsilon_greedy_host_pool_alive()
{
var r = RethinkDB.R;
var c = r.ConnectionPool()
.Seed(new[] { "192.168.0.11:28015" })
.PoolingStrategy(new EpsilonGreedyHostPool(null, EpsilonCalculator.Linear()))
.Discover(true)
.Connect();
Thread.Sleep(10000);
int result = r.random(1, 9).add(r.random(1, 9)).Run <int>(c);
result.Should().BeGreaterOrEqualTo(2).And.BeLessThan(18);
}
public void epsilon_test()
{
var sw = Stopwatch.StartNew();
EpsilonGreedyHostPool.Random = new Random(10);
var p = new EpsilonGreedyHostPool(null, EpsilonCalculator.Linear(), autoStartDecayTimer: false);
p.AddHost("a", null);
p.AddHost("b", null);
//initially hosts are not dead, for testing of course.
foreach (var h in p.HostList)
{
h.Dead = false;
}
//Initially, A is faster than B;
var timings = new Dictionary <string, long>()
{
{ "a", 200 },
{ "b", 300 }
};
var hitCounts = new Dictionary <string, long>()
{
{ "a", 0 },
{ "b", 0 }
};
var iterations = 12000;
for (var i = 0; i < iterations; i++)
{
if ((i != 0) && (i % 100) == 0)
{
p.PerformEpsilonGreedyDecay(null);
}
var hostR = p.GetEpsilonGreedy();// as EpsilonHostPoolResponse;
var host = hostR.Host;
hitCounts[host]++;
var timing = timings[host];
p.MarkSuccess(hostR, 0, TimeSpan.FromMilliseconds(timing).Ticks);
}
foreach (var host in hitCounts)
{
Console.WriteLine($"Host {host.Key} hit {host.Value} times {((double)host.Value / iterations):P}");
}
// 60-40
//Host a hit 7134 times 59.45 %
//Host b hit 4866 times 40.55 %
hitCounts["a"].Should().BeGreaterThan(hitCounts["b"]);
//hitCounts["a"].Should().Be(7134);
//hitCounts["b"].Should().Be(4866);
//===========================================
//timings change, now B is faster than A
timings["a"] = 500;
timings["b"] = 100;
hitCounts["a"] = 0;
hitCounts["b"] = 0;
for (var i = 0; i < iterations; i++)
{
if ((i != 0) && (i % 100) == 0)
{
p.PerformEpsilonGreedyDecay(null);
}
var hostR = p.GetEpsilonGreedy();// as EpsilonHostPoolResponse;
var host = hostR.Host;
hitCounts[host]++;
var timing = timings[host];
p.MarkSuccess(hostR, 0, TimeSpan.FromMilliseconds(timing).Ticks);
}
//TOTAL TIME: 177 milliseconds
sw.Stop();
Console.WriteLine($"TOTAL TIME: {sw.Elapsed.Humanize()}");
foreach (var host in hitCounts)
{
Console.WriteLine($"Host {host.Key} hit {host.Value} times {((double)host.Value / iterations):P}");
}
// 70-30
//Host a hit 3562 times 29.68 %
//Host b hit 8438 times 70.32 %
hitCounts["b"].Should().BeGreaterThan(hitCounts["a"]);
//hitCounts["a"].Should().Be(3562);
//hitCounts["b"].Should().Be(8438);
}
private void Form1_Load(object sender, EventArgs e)
{
try
{
for (int i = 0; i < 10; i++)
{
//Stablish connection to RethinkDB Server that is running on Raspberry
var conn = r.ConnectionPool().Seed(new[] { "192.168.0.184:28015", "192.168.1.202:28015", "192.168.1.189:28015" });
conn.PoolingStrategy(new EpsilonGreedyHostPool(new TimeSpan(0, 1, 0), EpsilonCalculator.Linear())).Discover(true);
pool = conn.Connect();
Thread.Sleep(1000);
}
}
catch (Exception ex)
{
MessageBox.Show("Impossible to Connect!");
}
tb_mensagem.Text = "";
//Get all messages from RethinkDB
List <Mensagem> all_messages = r.Db("chat").Table("chattable").OrderBy("Data").Run <List <Mensagem> >(pool);
//Load all previous messages to the listbox of messages
foreach (var message in all_messages)
{
//Create message
Mensagem msg = new Mensagem(message.Id, message.Data, message.Username, message.Msg);
//Adding Message to Listbox
lb_chat.Items.Add(msg);
}
focus_last_message();
//Calling and running the task
Task.Run(() => HandleUpdates(pool, lb_chat));
}
private void Login_Load(object sender, EventArgs e)
{
try
{
lb_alert.Text = "Trying to Reconnect...";
for (int i = 0; i < 10; i++)
{
var conn = r.ConnectionPool().Seed(new[] { "192.168.0.184:28015", "192.168.1.202:28015", "192.168.1.189:28015" });
conn.PoolingStrategy(new EpsilonGreedyHostPool(new TimeSpan(0, 1, 0), EpsilonCalculator.Linear())).Discover(true);
pool = conn.Connect();
}
}
catch (Exception ex)
{
lb_alert.Text = "Impossible to Connect";
}
}
