February 2026
Intermediate to advanced
256 pages
8h 51m
French
Content preview from Ingénierie des performances web à l'ère de l'IA (French Edition)
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Chapitre 6. Les compromis dans l'optimisation des performances
Cet ouvrage a été traduit à l'aide de l'IA. Tes réactions et tes commentaires sont les bienvenus : translation-feedback@oreilly.com
Le développement web, c'est une série de compromis.
Chaque amélioration de performance a un coût : ça peut rendre les choses plus compliquées, ajouter de la maintenance, voire nuire à d'autres mesures. Ce chapitre jette un regard pragmatique sur les stratégies d'amélioration des performances JavaScript et les compromis qu'elles impliquent. Le but est de t'aider à évaluer objectivement les optimisations, en trouvant le bon équilibre entre les recommandations explicites et le contexte. Comme le dit si bien Tim Kadlec, il y a rarement une solution unique dans le développement web ; on bosse dans un « brouillard de possibilités ». Tu dois connaître tes priorités (vitesse, accessibilité, productivité des développeurs, etc.) et choisir tes stratégies d'optimisation en conséquence.
Équilibrer différentes mesures de performance
Comme vous l'avez vu tout au long de ce livre, l , la performance en soi n'est pas une mesure unique, mais plusieurs. Parfois, vous devez en sacrifier une au profit d'une autre. Par exemple, pour améliorer le Largest Contentful Paint (LCP), vous pouvez retarder certains scripts nécessaires à l'interactivité, ce qui pourrait nuire à l'Interaction to Next Paint (INP) si l'utilisateur essaie d'interagir rapidement. Ou une stratégie visant à optimiser le Time ...
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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.
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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.