enabled

0 or 1 

Determines whether the server buffers the access log entries. The default value is true.

buffer-size

0 or 1 

The size (in bytes) of individual access log buffers. The value can be from 4096 to 1048576. 

max-buffers

1 

The maximum number of access log buffers per server. The value can be from 1 to 65536. 

max-buffers-per-file

0 or 1 

The maximum number of access log buffers per access log file. The value can be from 1 to 128. 

max-age

0 or 1 

The maximum time (in seconds) to buffer a given access log entry. The value can be from 0.001 to 3600.