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49 lines
1.7 KiB
ReStructuredText
49 lines
1.7 KiB
ReStructuredText
Quality of Service
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==================
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Ocelot supports one QoS capability at the current time. You can set on a per ReRoute basis if you
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want to use a circuit breaker when making requests to a downstream service. This uses an awesome
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.NET library called Polly check them out `here <https://github.com/App-vNext/Polly>`_.
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The first thing you need to do if you want to use the administration API is bring in the relavent NuGet package..
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``Install-Package Ocelot.Provider.Polly``
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Then in your ConfigureServices method
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.. code-block:: csharp
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public virtual void ConfigureServices(IServiceCollection services)
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{
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services
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.AddOcelot()
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.AddPolly();
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}
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Then add the following section to a ReRoute configuration.
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.. code-block:: json
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"QoSOptions": {
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"ExceptionsAllowedBeforeBreaking":3,
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"DurationOfBreak":5,
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"TimeoutValue":5000
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}
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You must set a number greater than 0 against ExceptionsAllowedBeforeBreaking for this rule to be
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implemented. Duration of break is how long the circuit breaker will stay open for after it is tripped.
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TimeoutValue means if a request takes more than 5 seconds it will automatically be timed out.
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You can set the TimeoutValue in isoldation of the ExceptionsAllowedBeforeBreaking and DurationOfBreak options.
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.. code-block:: json
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"QoSOptions": {
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"TimeoutValue":5000
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}
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There is no point setting the other two in isolation as they affect each other :)
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If you do not add a QoS section QoS will not be used however Ocelot will default to a 90 second timeout
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on all downstream requests. If someone needs this to be configurable open an issue.
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