Some Apache Specific Questions

Q:   What is graceful Apache restart?
A:   Advise children to exit after current requests, as child dies off the parent replaces it with a new generation of child.
Command to use:  apachectl –k graceful
Q:  Know anything about <ScoreBoardFile> Apache configuration file directive?
A:   for communication between server and child processes. If directive not specificed create ScoreBoard entirely in memory (Anonymous Standard Memory), otherwise, file-based share-memory(on-disk), to gain performance: use RAM disk…
Q:  TCP socket programming, what is SO_REUSEADDR ?
A:   Server restart control mechanism, reuse that old binded address please. This is especially popular in Apache source.