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MEDIUM: session: redispatch earlier when possible

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As discussed with Dmitry Sivachenko, is a server farm has more than one
active server, uses a guaranteed non-determinist algorithm (round robin),
and a connection was initiated from a non-persistent connection, there's
no point insisting to reconnect to the same server after a connect failure,
better redispatch upon the very first retry instead of insisting on the same
server multiple times.
This commit is contained in:
Willy Tarreau 2014-06-13 17:49:40 +02:00
parent db6d012270
commit 33a14e515b
1 changed files with 8 additions and 1 deletions
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9
src/session.c
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@ -879,8 +879,15 @@ static int sess_update_st_cer(struct session *s, struct stream_interface *si)
* we must mark the session unassigned, and eventually clear the DIRECT
* bit to ignore any persistence cookie. We won't count a retry nor a
* redispatch yet, because this will depend on what server is selected.
* If the connection is not persistent, the balancing algorithm is not
* determinist (round robin) and there is more than one active server,
* we accept to perform an immediate redispatch without waiting since
* we don't care about this particular server.
*/
if (objt_server(s->target) && si->conn_retries == 0 &&
if (objt_server(s->target) &&
(si->conn_retries == 0 ||
(!(s->flags & SN_DIRECT) && s->be->srv_act > 1 &&
((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR))) &&
s->be->options & PR_O_REDISP && !(s->flags & SN_FORCE_PRST)) {
sess_change_server(s, NULL);
if (may_dequeue_tasks(objt_server(s->target), s->be))