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CDNPerf: Real-Time CDN Performance and Uptime Monitoring

2025-09-18

CDNPerf is a web-based platform designed for web developers and organizations that rely on Content Delivery Networks (CDNs) to optimize their web performance. It provides real-time insights into the performance and uptime of various CDN providers, helping users make informed decisions about their CDN choices.

Key Features

CDNPerf gathers and analyzes over 300 million tests daily from real users worldwide, providing a comprehensive view of CDN performance. The platform measures the time it takes for users to download a 500-byte image from a CDN, bypassing local browser cache. It also tracks 'RUM Uptime,' which represents the uptime of CDN providers as measured by real users, although this metric can include false positives due to poor internet connections.

Data and Updates

The data on CDNPerf is updated hourly, with a 2500 millisecond timeout set for queries. For real-time data, users can access perfops.net. The platform currently monitors seven popular open CDN services: jsDelivr, cdnjs, Google, Yandex, Microsoft, jQuery, and Bootstrapcdn.

Usage

Users can navigate through different request types (Ping, Http, Https) and time intervals (7 days, 30 days, 90 days) to analyze performance trends. By hovering over specific data points, users can view detailed information about service latency, uptime, and errors.

Benefits

CDNPerf offers a valuable resource for developers and organizations seeking to optimize their web performance by choosing the most reliable and efficient CDN provider. Its data-driven insights enable users to compare CDN services based on real-world performance metrics.

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