Hostilla.pl IT glossary

What is TTFB?

TTFB, i.e. Time To First Byte, is the time from sending the request by the browser to receiving the first byte of the response from the server. A high TTFB may be due to slow PHP, database, lack of cache, external APIs or load. Diagnosis starts with cache, logs, PHP X-Ray and tests without plugins.

Definition

TTFB, i.e. Time To First Byte, is the time from sending the request by the browser to receiving the first byte of the response from the server. A high TTFB may be due to slow PHP, database, lack of cache, external APIs or load. Diagnosis starts with cache, logs, PHP X-Ray and tests without plugins.

What does it mean in practice?

In Hostilla.pl services this term is relevant when running websites, domains, DNS, e-mail, SSL and secure hosting operations.