Performance
TTFB (Time to First Byte)
The time it takes for a user's browser to receive the first byte of data from the web server.
Time to First Byte (TTFB) is a foundational metric for measuring web server responsiveness. It tracks the delay between the browser requesting a page and the server delivering the very first byte of information.
Why TTFB Matters
A low TTFB is critical because every subsequent part of the page loading process (DNS lookup, TCP handshake, TLS negotiation) depends on the server responding quickly. If your TTFB is high, even a highly optimized frontend will feel slow.
How to Improve TTFB
- Use a fast, high-quality hosting provider.
- Implement server-side caching.
- Utilize a Content Delivery Network (CDN) to serve content closer to the user.
- Optimize your database queries and backend code.