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Tag: Cache-Control

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Directives, edge cases, and the odd browser bug. Getting Cache-Control right so your assets live exactly as long as they should.

2026


  1. When Safari’s ‘Ignore Cache’ Ignored Cache-Control

2025


  1. Why Do We Have a Cache-Control Request Header?

2023


  1. What Is the Maximum max-age?

2019


  1. Cache-Control for Civilians

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Hi there, I’m Harry Roberts. I am an award-winning Consultant Web Performance Engineer, designer, developer, writer, and speaker from the UK. I write, Tweet, speak, and share code about measuring and improving site-speed. You should hire me.

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I help teams achieve class-leading web performance, providing consultancy, guidance, and hands-on expertise.

I specialise in tackling complex, large-scale projects where speed, scalability, and reliability are critical to success.

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