Tag Archives: caching

29 Jan 2026

curl CDN diagnostics: HTTP headers, caching, TLS timing

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Comprehensive Diagnostic Methodologies for Global Content Delivery Networks via the curl Command-Line Utility Modern CDNs hide enormous complexity behind clean, fast responses. Anycast routing, TLS termination, cache layers and security policies can all fail in subtle ways. In this article we focus on using curl as a transparent, protocol-level diagnostic tool that lets engineers at CDNsun customers and beyond observe, test and optimize end-to-end CDN delivery with surgical precision. Transparent HTTP/S Diagnostics for CDN Routing and Caching At the heart of CDN [...]

30 Nov 2016

Performance Beyond Caching – Front End Optimization

When we speak of web services, the word combination ‘front end’ is often related to the interaction between a visitor’s browser and a website. Front end optimization or FEO may be compared with the process of fine-tuning a web resource in order to make it more user-friendly and speedy one. FEO is usually used when you need to reduce the file sizes and decrease the number of requests needed for a given page to load. Overall, this content optimization has [...]