public void TestGuidDistribution()
{
const int shardsCount = 10;
var keyDistributor = KeyDistributor.Create(shardsCount);
var array = new int[shardsCount];
const int guidsCount = 10000;
var sw = Stopwatch.StartNew();
for (var i = 0; i < guidsCount; i++)
{
var idx = keyDistributor.Distribute(Guid.NewGuid().ToString());
if (idx < 0 || idx >= shardsCount)
{
Assert.That(false);
}
array[idx]++;
}
Console.WriteLine("Time=" + sw.Elapsed);
var diff = array.Max() - array.Min();
Console.WriteLine("Diff = " + diff);
Assert.That(diff < guidsCount / 50);
}
public void TestRandomStringDistribution()
{
const int shardsCount = 10;
var keyDistributor = KeyDistributor.Create(shardsCount);
var array = new int[shardsCount];
var path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Tests/EventLog/Sharding/Files/dict.txt");
var words = File.ReadAllText(path).Split('\n', '\r').Where(s => !string.IsNullOrEmpty(s)).ToArray();
var sw = Stopwatch.StartNew();
for (var i = 0; i < words.Length; i++)
{
var idx = keyDistributor.Distribute(words[i]);
if (idx < 0 || idx >= shardsCount)
{
Assert.That(false);
}
array[idx]++;
}
Console.WriteLine("Time=" + sw.Elapsed);
var diff = array.Max() - array.Min();
Console.WriteLine("Diff = " + diff);
Assert.That(diff < words.Length / 100);
}