June 2026
Intermediate
632 pages
19h 7m
Portuguese (Portugal, Brazil)
book
Engenharia de Observabilidade (Portuguese Edition), 2nd Edition
by Charity Majors, Liz Fong-Jones, George Miranda
Content preview from Engenharia de Observabilidade (Portuguese Edition), 2nd Edition
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Capítulo 15. Amostragemeconômica e suficientemente precisa
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Nos dois capítulos anteriores, analisamos configurações e implementações de armazenamento de dados capazes de armazenar e recuperar com eficiência grandes quantidades de dados de observabilidade. Neste capítulo, vamos ver técnicas para reduzir a quantidade de dados de observabilidade que você pode precisar armazenar.
Em uma escala grande o suficiente, os recursos necessários para reter e processar cada evento podem se tornar proibitivos e impraticáveis. A amostragem de eventos pode amenizar a solução de compromisso entre o consumo de recursos e a fidelidade dos dados. Este capítulo examina por que a amostragem é útil (mesmo em menor escala), as várias estratégias normalmente usadas para amostrar dados e as soluções de compromisso entre essas estratégias.
Neste capítulo, usamos exemplos com código para ilustrar como essas estratégias são implementadas e apresentamos, aos poucos, conceitos que se baseiam nos exemplos anteriores. Vamos começar com esquemas de amostragem mais simples, aplicados a eventos individuais, como uma introdução conceitual ao uso de uma representação estatística dos dados durante a amostragem. Depois, avançamos para estratégias de amostragem mais complexas, aplicadas a uma série de eventos relacionados (intervalos de rastreamento), e propagamos as informações necessárias para reconstruir ...
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