September 2025
Intermediate to advanced
484 pages
14h 54m
Portuguese (Portugal, Brazil)
Content preview from Construindo microsserviços orientados a eventos, 2nd Edition
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Capítulo 9. Processamento determinístico de fluxo
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Os microsserviços orientados por eventos normalmente têm topologias mais complexas do que as apresentadas no capítulo anterior (consulte "Topologia de microsserviço"). Eles consomem eventos de vários fluxos de eventos particionados, mantêm o estado, reparticionam dados e emitem novos eventos para outros fluxos. Eles também estão sujeitos a todos os mesmos modos de falha e falhas que qualquer outro aplicativo, o que pode resultar em eventos fora de ordem, eventos atrasados e dúvidas sobre como os eventos serão processados na realidade.
Aqui estão as três principais questões abordadas neste capítulo:
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Como um microsserviço escolhe a ordem dos eventos a serem processados quando você consome de várias partições?
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Como um microsserviço lida com eventos fora de ordem e que chegam com atraso?
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Como podemos garantir que nossos microsserviços produzam resultados determinísticos ao processar fluxos em tempo quase real em comparação com o processamento desde o início dos fluxos?
Podemos responder a essas perguntas examinando carimbos de data/hora, agendamento de eventos, marcas d'água e tempos de fluxo, e como eles contribuem para o processamento determinístico. Bugs, erros e alterações na lógica comercial também exigirão reprocessamento, o que torna os resultados determinísticos importantes. Este capítulo também explora ...
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