Microsoft.AspNet.SignalR.Messaging.ScaleoutStore.Add C# (CSharp) Method

        public ulong Add(ScaleoutMapping mapping)
        {
            // keep looping in TryAddImpl until it succeeds
            ulong newMessageId;
            while (!TryAddImpl(mapping, out newMessageId)) ;

            // When TryAddImpl succeeds, record the fact that a message was just added to the
            // store. We increment the next free id rather than set it explicitly since
            // multiple threads might be trying to write simultaneously. There is a nifty
            // side effect to this: _nextFreeMessageId will *always* return the total number
            // of messages that *all* threads agree have ever been added to the store. (The
            // actual number may be higher, but this field will eventually catch up as threads
            // flush data.)
            Interlocked.Increment(ref _nextFreeMessageId);
            return newMessageId;
        }

        public void BinarySearchNoOverwritemSmallerFail()
        {
            var store = new ScaleoutStore(10);

            for (int i = 1; i <= 5; i++)
            {
                store.Add(new ScaleoutMapping((ulong)i, new ScaleoutMessage()));
            }

            ScaleoutStore.Fragment fragment;
            bool result = store.TryGetFragmentFromMappingId(0, out fragment);

            Assert.False(result);
        }