Cursor performance

Cache-Control Headers Set Incorrectly

After Cursor refactored your server response headers, caching is not working correctly. Either assets are cached too long (users see stale content) or not cached at all (every request hits server).

Cache-Control headers were changed incorrectly.

Error Messages You Might See

Users see stale content Every request hits server Cache not being used Assets downloaded repeatedly
Users see stale contentEvery request hits serverCache not being usedAssets downloaded repeatedly

Common Causes

  1. Cache-Control header removed entirely
  2. Max-age set to 0, disabling all caching
  3. No-cache or no-store applied to static assets
  4. Immutable directive removed from versioned assets
  5. Different headers applied to HTML vs CSS/JS

How to Fix It

Static assets (hashed): Cache-Control: max-age=31536000, immutable. HTML: max-age=0, no-cache (always revalidate). API: appropriate based on data freshness. Use ETag for validation. Test with DevTools Network tab.

Real developers can help you.

MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Jaime Orts-Caroff Jaime Orts-Caroff I'm a Senior Android developer, open to work in various fields Matthew Butler Matthew Butler Systems Development Engineer @ Amazon Web Services Dor Yaloz Dor Yaloz SW engineer with 6+ years of experience, I worked with React/Node/Python did projects with React+Capacitor.js for ios Supabase expert zipking zipking I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify. As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value. rayush33 rayush33 JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems Bastien Labelle Bastien Labelle Full stack dev w/ 20+ years of experience Taufan Taufan I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms. Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact. Costea Adrian Costea Adrian Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system. Anthony Akpan Anthony Akpan Developer with 8 years of experience building softwares fro startups

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Frequently Asked Questions

How do I cache bust versioned assets?

Use content hash in filename (app.abc123.js). Set long max-age. HTML loads correct version number.

What's the difference between cache-control directives?

no-cache: revalidate before use. no-store: don't cache. max-age: seconds to cache. immutable: never changes.

Related Cursor Issues

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