[{"data":1,"prerenderedAt":54},["ShallowReactive",2],{"\u002Fglossary\u002Fcrowd-sourced-change-detection":3,"\u002Fglossary\u002Fcrowd-sourced-change-detection:related":37},{"id":4,"title":5,"author":6,"authorImage":7,"body":8,"category":22,"date":23,"description":24,"draft":25,"extension":26,"letter":27,"meta":28,"navigation":29,"path":30,"readTime":31,"related":32,"seo":33,"stem":35,"term":5,"__hash__":36},"glossary\u002Fglossary\u002Fcrowd-sourced-change-detection.md","Crowd-Sourced Change Detection","Fabian Krumbholz","\u002Fimages\u002Fauthors\u002Ffabian-krumbholz.webp",{"type":9,"value":10,"toc":18},"minimark",[11],[12,13,14,17],"p",{},[15,16,5],"strong",{}," is a Web Vitals Monitoring feature that detects performance regressions by comparing a website's current performance against baseline data from its most engaged users (those who visit most frequently). This approach provides early detection of performance issues that may impact user experience.",{"title":19,"searchDepth":20,"depth":20,"links":21},"",2,[],null,"April 8, 2026","Crowd-Sourced Change Detection is a Web Vitals Monitoring feature that detects performance regressions by comparing a website's current performance against baseline data from its most engaged users…",false,"md","C",{},true,"\u002Fglossary\u002Fcrowd-sourced-change-detection","1 min read",[],{"title":34,"description":24},"Crowd-Sourced Change Detection: Definition | Web Performance Glossary","glossary\u002Fcrowd-sourced-change-detection","NM8fSObSMpQZfhUSWjud9ZSyBXtpLf5MVmdPhFNGhZA",[38,42,46,50],{"path":39,"title":40,"description":41,"letter":27},"\u002Fglossary\u002Fcdn-content-delivery-network","CDN (Content Delivery Network)","A CDN, or Content Delivery Network, is a globally distributed network of servers designed to deliver web content to users quickly and efficiently.",{"path":43,"title":44,"description":45,"letter":27},"\u002Fglossary\u002Fcors-cross-origin-resource-sharing","CORS (Cross-Origin Resource Sharing)","CORS is a browser security feature that uses HTTP headers to manage whether a web page from one domain is allowed to fetch resources from another domain.",{"path":47,"title":48,"description":49,"letter":27},"\u002Fglossary\u002Fcpu-time","CPU time","CPU time is the amount of time the Central Processing Unit (CPU) of a user's device spends processing the scripts and rendering a webpage.",{"path":51,"title":52,"description":53,"letter":27},"\u002Fglossary\u002Fcache","Cache","A cache is a high-speed, temporary storage layer designed to store copies of website files (like HTML, images, and scripts) closer to the user.",1787756713695]