How to make your web page faster before it even loads

The text discusses the events that occur before a web page is loaded in a browser window, including cache retrieval, DNS lookup, connection establishment, and TLS negotiation. It explains how these events are captured by Sentry using the Performance API and provides guidance on optimizing them to improve web performance. The article highlights the importance of understanding these pre-TTFB events and suggests ways to speed up DNS lookups, connect and TLS negotiation events, and browser request and response events. By visualizing and tracing these events in the Sentry Trace View, developers can identify bottlenecks and make targeted micro-optimizations to improve their web page's performance.

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