private static CompactStatistics DoStats(GuidStore db)
{
var stats = db.GetCompactStatistics();
Console.Out.WriteLine("{0}: {1} [{2}, {3}]", "current", stats.TotalSize, stats.IndexSize, stats.BlobSize);
Console.Out.WriteLine("{0}: {1} [{2}, {3}]", "compact", stats.EstimatedTotalPostCompactSize, stats.EstimatedPostCompactIndexSize, stats.PostCompactBlobSize);
Console.Out.WriteLine("{0}: {1} [{2}, {3}]", "records", stats.RecordCount,
stats.RecordCount > 0 ?
stats.IndexSize / stats.RecordCount : 0,
stats.RecordCount > 0 ? stats.EstimatedPostCompactIndexSize/ stats.RecordCount : 0);
return stats;
}
public void TestSimpleDB()
{
string indexDirectory = @"C:\test-simple-db\1\";
var keys = new List<Guid>();
int iterations = 10000;
Console.Out.WriteLine("building");
var watch = new Stopwatch();
watch.Start();
using(var db = new GuidStore(indexDirectory))
{
for (int i = 0; i < iterations; i++)
{
var value = "A random piece of data.";
var key = Guid.NewGuid();
keys.Add(key);
db.Save(key, Encoding.UTF8.GetBytes(value));
}
//var stats = DoStats(db);
//Assert.AreEqual(100, stats.RecordCount);
}
watch.Stop();
Console.Out.WriteLine(watch.ElapsedMilliseconds + "ms, " + iterations +" row");
Console.Out.WriteLine("reading");
watch.Reset();
watch.Start();
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
var value = Encoding.UTF8.GetString(db.Get(key));
//Console.Out.WriteLine(key + ", " + value);
}
//DoStats(db);
}
watch.Stop();
Console.Out.WriteLine(watch.ElapsedMilliseconds + "ms, " + iterations + " row");
Console.Out.WriteLine("updating to short value");
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
db.Save(key, Encoding.UTF8.GetBytes("A value."));
}
DoStats(db);
}
Console.Out.WriteLine("reading");
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
var value = Encoding.UTF8.GetString(db.Get(key));
//Console.Out.WriteLine(key + ", " + value);
}
DoStats(db);
}
Console.Out.WriteLine("updating to long value");
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
db.Save(key, Encoding.UTF8.GetBytes("A much longer value than ever before will be updated."));
}
DoStats(db);
}
Console.Out.WriteLine("reading");
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
var value = Encoding.UTF8.GetString(db.Get(key));
//Console.Out.WriteLine(key + ", " + value);
}
DoStats(db);
}
Console.Out.WriteLine("deleting...");
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
db.Delete(key);
}
DoStats(db);
}
Console.Out.WriteLine("testing delete");
using (var db = new GuidStore(indexDirectory))
{
foreach (var key in keys)
{
try
{
db.Get(key);
Console.Out.WriteLine("hmmm... not good.");
}
catch(Exception ex)
{
//Console.Out.WriteLine("deleted.");
}
}
DoStats(db);
Console.Out.WriteLine("adding one more");
db.Save(Guid.NewGuid(), Encoding.UTF8.GetBytes("test"));
DoStats(db);
Console.Out.WriteLine("compact");
db.Compact();
DoStats(db);
}
}
