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Effective Rails Instrumentation

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André Luís Anastácio Desenvolvedor Twitter / Github - ndrluis

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Belo Horizonte

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Use New Relic, Papertrail e Rollbar.

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Use New Relic, Papertrail e Rollbar. Duvidas?

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Testar não é negociável

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Mensurar/Instrumentar não deveria ser negociável

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Exemplo E-commerce

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class PaymentService def initialize(order) @order = order end def pay response = ExternalPaymentStuff.pay(order) if response.success? @order.pay! else fail SomePaymentError, response.error_message end end end

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ActiveSupport::TaggedLogging

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class PaymentService def initialize(order) @order = order end def pay logger.tagged(order_tag, client_tag) do response = ExternalPaymentStuff.pay(order) if response.success? order.pay! else logger.error(response.body) fail SomePaymentError, response.error_message end end end private attr_accessor :order def logger @logger ||= Rails.logger end def order_tag "ORDER ##{order.id}" end def client_tag "CLIENT ##{order.client_id}" end end

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Serviço de Terceiros Rollbar

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class PaymentService def initialize(order) @order = order end def pay response = ExternalPaymentStuff.pay(order) if response.success? order.pay! else Rollbar.error('PaymentError', response_body: response.body, order_id: order.id) fail SomePaymentError, response.error_message end end private attr_accessor :order end

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Como escolher entre TaggedLogging e Rollbar?

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Facilitar a reprodução do Erro

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BONUS STAGE

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BONUS STAGE Performance

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Obrigado!