Re: proxy quarantine

[Howard Chu <hyc@symas.com>]

Pierangelo Masarati wrote:
> Just to avoid work duplication: I'm working right now at adding
> quarantine support to back-ldap (done) and back-meta (in progress).
>
> This means that the proxies can be configured with
>
> quarantine	"<interval>,<num>[;<interval>,<num>[...]]"
>
> so that connections that fail because the host is unavailable are not
> retried until <interval> passed for a few times, and further requests in
> the meanwhile are bounced with LDAP_UNAVAILABLE.  In the current
> implementation there's no extra task that checks at the given interval;
> <interval> here is the time it needs to be elapsed since the last
> attempt to retry, but the retry occurs as soon as a client requests it.
>   

This sounds pretty good, but from your description I can't tell how this 
interacts with multiple server URIs. Will the quarantine affect 
individual servers, so that requests will automatically go to an 
alternate server while an initial server is quarantined?
> I've hijacked the syntax of the "retry" parameter to syncrepl;
> currently, it is required that patterns, made of pairs <interval>,<num>
> are separated by semicolons, to make the whole thing a bit more
> readable.  I suggest the same change is applied to syncrepl.
>
>   


--
 -- Howard Chu
 Chief Architect, Symas Corp.  http://www.symas.com
 Director, Highland Sun        http://highlandsun.com/hyc
 OpenLDAP Core Team            http://www.openldap.org/project/