public void SampleIntegerDistributionTest()
{
var map = CreateSampleShardMap();
var results = new[] { 0, 0, 0, 0, 0 };
const int testUpTo = 10;
for (var i = 1; i < testUpTo; i++)
{
var hash = (long)CityHasher.CityHash64String(i.ToString(CultureInfo.InvariantCulture));
var s = 0;
foreach (var shard in map.Shards)
{
if (hash >= shard.LowDistributionKey && hash < shard.HighDistributionKey)
{
++results[s];
continue;
}
++s;
}
}
for (var i = 0; i < 5; i++)
{
Console.WriteLine("Shard {0}: {1}", i + 1, results[i]);
}
}
public void SampleIntegerTest()
{
for (var i = 0; i < 1000; i++)
{
var s = i.ToString(CultureInfo.InvariantCulture);
Console.WriteLine(s.PadLeft(5) + ": " + (long)CityHasher.CityHash64String(s));
}
}
public void SampleStringDistributionTest()
{
var names = new[] { "jodell", "mnigels", "todell", "aadams", "bjoel", "sjones" };
foreach (var name in names)
{
Console.WriteLine(name.PadLeft(15) + ": " + (long)CityHasher.CityHash64String(name));
}
}
/// <summary>
/// Gets the distribution key for sharding key for the DHard Set.
/// </summary>
/// <param name="shardingKey">The sharding key.</param>
/// <returns>System.Int64.</returns>
public long GetDistributionKeyForShardingKey(string shardingKey)
{
return((long)CityHasher.CityHash64String(shardingKey));
}
private static long GetDistributionKey(int shardingKey)
{
return(CityHasher.CityHash64StringGetLong(shardingKey.ToString(CultureInfo.InvariantCulture)));
}
private static long GetDistributionKey(string shardingKey)
{
return(CityHasher.CityHash64StringGetLong(shardingKey));
}
