static void Main()
{
// This sample shows the use of FASTER as a concurrent pure in-memory cache
var log = new NullDevice(); // no storage involved
// Define settings for log
var logSettings = new LogSettings
{
LogDevice = log, ObjectLogDevice = log,
MutableFraction = 0.9, // 10% of memory log is "read-only region"
CopyReadsToTail = CopyReadsToTail.FromReadOnly, // reads in read-only region are copied to tail
PageSizeBits = 14, // Each page is sized at 2^14 bytes
MemorySizeBits = 25, // (2^25 / 24) = ~1.39M key-value pairs (log uses 24 bytes per KV pair)
};
// Number of records in memory, assuming class keys and values and x64 platform
// (8-byte key + 8-byte value + 8-byte header = 24 bytes per record)
int numRecords = (int)(Math.Pow(2, logSettings.MemorySizeBits) / 24);
// Targeting 1 record per bucket
var numBucketBits = (int)Math.Ceiling(Math.Log2(numRecords));
h = new FasterKV <CacheKey, CacheValue>(1L << numBucketBits, logSettings, comparer: new CacheKey());
sizeTracker = new CacheSizeTracker(h, logSettings.MemorySizeBits);
PopulateStore(numRecords);
ContinuousRandomWorkload();
h.Dispose();
Console.WriteLine("Press <ENTER> to end");
Console.ReadLine();
}
public CacheFunctions(CacheSizeTracker sizeTracker)
{
this.sizeTracker = sizeTracker;
}
