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 20. Engenhariade desempenho com observabilidade
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A observabilidade costuma ser vista como uma ferramenta de confiabilidade — garantir que tudo continue funcionando e consertar o que dá problema. No entanto, uma prática madura de observabilidade também serve de base para a engenharia de desempenho: a busca disciplinada por sistemas mais rápidos, eficientes e econômicos. Neste capítulo, vamos explorar como passar de uma abordagem reativa de “apagar incêndios” para uma otimização proativa, aproveitando a sobreposição entre essas duas áreas.
A importância da engenharia de desempenho
Imagina que você tivesse um bug misterioso que, sem você perceber, estava aumentando a latência em todas as solicitações dos seus serviços. Essa foi a situação em que nossa equipe se viu, e o ponto de partida para nossa jornada na engenharia de desempenho.
Em dezembro de 2021, a equipe de engenharia do Honeycomb ficou surpresa ao descobrir uma discrepância entre a latência das solicitações para nosso endpoint de ingestão, medida pelos logs do balanceador de carga, e os intervalos de autoinstrumentação nos rastreamentos do nosso aplicativo. O efeito foi mais pronunciado nas solicitações POST para o endpoint do nosso serviço de ingestão que processava eventos individuais, em vez de lotes maiores. De alguma forma, o tempo estava sumindo, e solicitações que levariam décimos de milissegundo ...
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