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Thymeleaf Static Resource Caching Issues
CSS or JavaScript changes don't appear after deployment. Browser caches old versions. Users see old styles or functionality.
Aggressive caching hides code updates.
Common Causes
- HTTP cache headers set too long
- Browser aggressively caches .css/.js files
- No cache busting (version strings in filenames)
- CDN cache not invalidated
- Service worker caching old resources
How to Fix It
Add version query string to resources: th:href=@{/css/style.css(v=${appVersion})}. Set cache headers: Cache-Control: no-cache for HTML, public max-age=3600 for static. Use content-hash in filename (style.a1b2c3d4.css). Disable cache in development: spring.web.resources.cache.period=0.
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I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
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I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
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I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
Matthew Butler
Systems Development Engineer @ Amazon Web Services
Nam Tran
10 years as fullstack developer
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Get HelpFrequently Asked Questions
How do I force browsers to refresh CSS?
Add query param: /css/style.css?v=1.0.1 and increment on release
Should I cache static files?
Yes, but with versioning. Use content hash for automated versioning