https://www.php.net/manual/pt_BR/seaslog.flushbuffer.php
PHP: SeasLog::flushBuffer - Manual
Limpa o buffer de registros, despeja no arquivo ou envia para API remota com tcp/udp
phpmanual
https://irssi.org/documentation/help/flushbuffer/
flushbuffer - Irssi dev help page
dev helpirssi