February 2026
Intermediate to advanced
256 pages
8h 16m
Portuguese (Portugal, Brazil)
Content preview from Engenharia de desempenho da Web na era da IA (Portuguese Edition)
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Capítulo 3. Códigogerado por IA e o paradoxo do desempenho
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
A geração de código assistida por IA passou rapidamente de uma novidade para uma ferramenta cotidiana no desenvolvimento moderno. LLMs e assistentes de codificação de IA podem produzir código de aplicativos web em segundos, oferecendo soluções que parecem funcionar no navegador. Essa velocidade e conveniência, no entanto, vêm com um paradoxo: essas ferramentas atualmente otimizam para correção (satisfazendo a intenção do prompt) e talvez estilo — não para desempenho. Os dados de treinamento com os quais elas aprendem são uma mistura de códigos da web, que incluem práticas boas e ruins. Assim, uma IA pode regurgitar uma solução que funciona, mas não é ideal, eficiente, acessível ou fácil de usar. Na prática, muitos desenvolvedores estão descobrindo que os aplicativos gerados por IA funcionam adequadamente, mas apresentam sérios problemas de desempenho e qualidade quando avaliados pelos padrões do mundo real.
Este capítulo analisa o problema em um nível geral e avalia como o papel dos desenvolvedores humanos está evoluindo. Os capítulos a seguir oferecerão algumas técnicas concretas para otimizar o código gerado por IA.
Resultados da IA: corretos, mas não ideais
Os LLMs ( ) basicamente absorveram o código-fonte aberto do mundo e aprenderam padrões comuns. Isso significa que o código que eles geram tende ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.