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copied!<ol> <li>I hope you are properly disposing the ADO.NET objects. (This is simply good practice.) </li> <li>Any stray references will keep your <code>RateLog</code> objects from being collected by the GC.</li> </ol> <p>I recommend you look through your code starting where the <code>RateLog</code> objects are being created and take note of all the places a reference is being held. Here are some things to consider.</p> <ol> <li>Are the <code>RateLog</code> objects subscribed to any events?</li> <li>Are you keeping a collection of <code>RateLog</code> objects sitting somewhere in a static class?</li> </ol> <p>You should also consider encapsulating all your thread safety boilerplate in class.</p> <pre><code>public sealed class WorkQueue<T> { private readonly System.Collections.Generic.Queue<T> _queue = new System.Collections.Generic.Queue<T>(); private readonly object _lock = new object(); public void Put(T item) { lock (_lock) { _queue.Enqueue(item); } } public bool TryGet(out T[] items) { if (_queue.Count > 0) { lock (_lock) { if (_queue.Count > 0) { items = _queue.ToArray(); _queue.Clear(); return true; } } } items = null; return false; } } </code></pre> <p>This will make your code a lot clearer:</p> <pre><code>protected void FetchingRates() { int ratesInterval = int.Parse(ConfigurationManager.AppSettings["RatesIntreval"].ToString()); int count = 0; var queue = new WorkQueue<RateLog>(); while (true) { try { var items = default(RateLog[]); if (queue.TryGet(out items)) { foreach (var item in items) { m_ConnectionDataAccess.InsertRateLog(item); } } } catch (Exception ex) { Logger.Log(ex); } Thread.Sleep(ratesInterval); count++; } } </code></pre>

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