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Editorial Team
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Asked: 2026-06-17T19:40:12+00:00

I have a WCF Service with out of the box HTTP binding. It accepts

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I have a WCF Service with out of the box HTTP binding. It accepts a data object on which it runs some calculations and then returns the object.

A single call takes around 1.5s and works without issues. However concurrent calls can cause huge spikes in the completion time (10 concurrent calls can take up to 60s). Even if I run multiple calls one after the other I see spikes where the time taken jumps from 1.5 to over 5 seconds.

I currently have the service configured to single context mode and multiple concurrency mode. But I have tried other combinations to no avail.

Would anyone be able to provide a possible reason for these seemingly random spikes?

Thanks

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1 Answer

  1. Editorial Team

    The issue was caused by a database read being performed on each call when it was only required to be done once.

    I added a check to ensure the database read was only performed if the data hadn’t already been loaded and this resolved the issue.

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