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Building Resilient Services

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Fail Fast And graceful degradations

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Timeouts

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Timeout::timeout(5) do # Perform long operation. end

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Time out at all levels https://github.com/heroku/rack-timeout

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App Request Request Request

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App Request Request Request 30 seconds 30 + 10 seconds 30 + 10 + 10 seconds

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App Request Request Request Timeout after 10 seconds 10 + 10 seconds 10 + 10 + 10 seconds

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Circuit Breakers

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Web Request

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Web Request

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Web Request

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Web Request

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Web Request

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Web Request

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Web Request

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Monitor everything

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Bibliography techblog.netflix.com

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Questions?