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POWhy new Azure Storage Client Library 2.0 has poor query performance compare to legacy TableServiceQuery?
 

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  1. POWhy new Azure Storage Client Library 2.0 has poor query performance compare to legacy TableServiceQuery?
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    <p>I just do the proof of concept to measure performance improvement for new Azure Storage Client Library 2.0 and its legacy TableServiceQuery.</p> <p>After run the result, I'm surprise! Instead of Azure SCL 2.0 will have performance gain. Its performance is poor by double compare to TableServiceQuery.</p> <p>Here is my code:</p> <pre><code>var account = CloudStorageAccount.Parse(ConfigHelper.DataConnectionString); var tableClient = account.CreateCloudTableClient(); var context = tableClient.GetTableServiceContext(); var table = tableClient.GetTableReference("User"); var sw = new Stopwatch(); sw.Start(); for (int i = 0; i &lt; 100; i++) { var query = context.CreateQuery&lt;User&gt;("User"); var temp = (from item in query where item.PartitionKey == "12345" select item).First(); temp.ToString(); } sw.Stop(); Console.WriteLine("TableServiceQuery: " + sw.Elapsed); sw.Reset(); sw.Start(); for (int i = 0; i &lt; 100; i++) { var query = new TableQuery&lt;User&gt;().Where(TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, "12345")).Take(1); var temp = table.ExecuteQuerySegmented(query, null).First(); temp.ToString(); } sw.Stop(); Console.WriteLine("TableQuery: " + sw.Elapsed); </code></pre> <p>And result is</p> <pre><code>TableServiceQuery: 00:00:13.8179295 TableQuery: 00:00:34.8782858 </code></pre> <p>I tried several times but new SCL 2.0 (TableQuery) always spent time more than double. The table 'User' which I query have records around million records.</p> <p>My understand is new API should have major performance improvement. Anybody please explain did I am missing something in my code? Or what should I do to make new library has better performance?</p>
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    1. USChaowlert Chaisrichalermpol
    1. USChaowlert Chaisrichalermpol
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