December 22, 2025
Your interface says 1Gbps, but your file transfer is 940Mbps. Where did the data go? We break down IP headers, TCP framing, and the difference between raw capacity and usable data.
TCP/IPNetworkingBandwidthProtocol Overhead
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December 18, 2025
You have a 1Gbps line, but downloading from a server in Japan is slow. The culprit is TCP Window Scaling and the Bandwidth-Delay Product (BDP).
TCP TuningLatencyBDPPerformance
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December 15, 2025
Why is 1.1.1.1 so fast? It is not magic; it is Anycast. We explain how BGP announces the same IP address from 300 locations simultaneously.
BGPRoutingAnycastNetwork Architecture
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December 13, 2025
Relying on a website to check your gigabit connection? Single-threaded JavaScript engines and HTTP overhead make browser tests unreliable for high-speed lines.
Web PerformanceJavaScriptBenchmarkingBrowsers
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