Does a graceful Apache restart clear APC?

Question

Will calling

$ httpd graceful

clear out the APC cache, or do I have to do a full-blown

$ httpd restart

to do it? (Keeping in mind that I know there are better ways to do it, like calling apc_clear_cache() programmatically).

score 18 · Accepted Answer · answered May 07 '10 at 01:31

18

Both will clear APC cache.

You can also clear cache using the APC.php script.

answered May 07 '10 at 01:31

ZZ Coder

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Does the apc cache also clear the opcode cache, or just the user cache? – Yehosef Oct 11 '11 at 08:20
What about an httpd reload ? – Tom Desp Oct 30 '13 at 16:32

score 6 · Answer 2 · answered Feb 24 '12 at 18:00

Graceful does not wait for active connections to die before doing a "full restart". It is the same as doing a HUP against the master process. Apache keeps children (processes) with active connections alive, whilst bringing up new children with new configuration (or nicely cleared caches) for each new connection. As the old connections die off, those child processes are killed as well to make way for the new ones.

score 4 · Answer 3 · answered May 07 '10 at 16:33

4

httpd graceful does a full restart, it simply waits until there are no active connections before doing so

answered May 07 '10 at 16:33

Mark Baker

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Does a graceful Apache restart clear APC?

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