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What are the advantages of loading external resources from multiple domains?
sobes.tech AI
Answer from AI
- Parallel loading: Browsers limit the number of simultaneous connections to a single domain. Using multiple domains allows increasing this number and loading resources in parallel, speeding up the overall page load time.
- Bypassing parallel connection limits: Each domain has its own limit on the number of concurrent TCP connections. Distributing resources across different domains allows bypassing these restrictions and loading more files simultaneously.
- Caching: Browsers cache resources based on the domain. If different parts of the application use resources from different domains, this can improve caching efficiency, as changes on one domain won't affect cached resources from another.
- Reducing server load: Distributing resource requests across multiple domains relieves the main web server, improving its performance and stability.
- Security: In some cases, using different domains for static resources can be part of a security enhancement strategy, for example, to prevent certain cross-site scripting (XSS) attacks.