WordPress TTFB: What Time to First Byte Tells You
Time to First Byte measures how long it takes before the first response byte arrives after a request is initiated.
TTFB is useful, but it is not total page speed
DNS, connection setup, network distance, server processing, application work, and caching can all influence the measurement. A fast TTFB does not guarantee a fast rendered page.
What to compare
- Cached vs uncached TTFB
- Test location
- Median and tail latency
- Backend/database work
- CDN edge response
- Consistency over time
Common mistakes
- Using one test run
- Comparing edge-cached TTFB with uncached origin TTFB
- Calling TTFB a Core Web Vital
How to use this in a hosting decision
Turn the concept into a requirement. Write down what your site actually needs today, what could change over the next year, and which limits would create a forced upgrade. Then compare providers using current documentation rather than marketing labels alone.
Use the hosting selection checklist. Compare managed WordPress hosting. See how WPX fits the criteria.