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.

Jacek Rozanski Jacek Rozanski Senior PHP/Symfony developer and DevOps engineer with 20+ years of professional experience, running opcode.pl (web development agency, est. 2004). Day job: I'm the sole backend developer at merketing company where I own and maintain 11 PHP/Symfony microservices on AWS (ECS Fargate, RDS, S3, CloudFront), handle the full CI/CD pipeline (Bitbucket Pipelines, Docker), and manage monitoring with Sentry and CloudWatch. These services handle high request volumes in production every month. 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Antriksh Narang Antriksh Narang 5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies. Sage Fulcher Sage Fulcher Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make peopleโ€™s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them) PawelPloszaj PawelPloszaj I'm fronted developer with 10+ years of experience with big projects. I have small backend background too hanson1014 hanson1014 Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround. Jen Jacobsen Jen Jacobsen Iโ€™m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. 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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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