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Continue to ChatQuery : Setting an expiry date or a maximum age in the HTTP headers I just finished a website that I designed and submitted it to Google PageSpeed Insights for performance reviews, and this is the https://vmapp.org/query/106404/Setting-An-Expiry-Date-Or-A-Maximum-Age-In-The-HTTP-Headers-I-Just-Finished-A-Website-That-I-Designed-And-Submitted-It-To-Google-PageSpeed-Insights-For-Performance-Reviews-And-This-Is-The/