How to include time format with millisecond precision in Apache access log

Question

How to include time format with millisecond precision in Apache Access Log.

I tried to use:

pattern="%h %l %u %{%d/%b/%Y %T}t.%{msec_frac}t %{%z}t "%r" %s %b".

However it does not work.

Answer 1

From the AccessLogValve documentation

%{xxx}t xxx is an enhanced SimpleDateFormat pattern

So if you use a pattern of something like %{yyyy-MM-dd HH:mm:ss.SSS}t then it should print milliseconds.