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Double-keyed caching: Browser cache partitioning
A deep dive into how browser cache partitioning has fundamentally changed web performance optimization, examining the trade-offs between privacy and performa...
While this prevents cross-site tracking and other privacy issues, it also means we’re storing duplicate copies of the same resource - a trade-off between security and efficiency. While double-keyed caching introduces some performance overhead, it’s important to understand that these impacts are accepted as a necessary trade-off for enhanced security and privacy protection. Shared Libraries Popular JavaScript libraries previously benefiting from cross-site caching now require separate downloads CDN-hosted frameworks like jQuery or React face reduced caching benefits Each top-level site maintains its own copy, increasing overall bandwidth usage
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