Update session failure on high load if idle timeout is configured
Under high load, we get errors on session update:
[Tue Mar 31 16:17:33.844479 2015] [perl:debug] [pid 437] Logger.pm(21):
/usr/share/perl5/Lemonldap/NG/Handler/Main.pm 379:
[Tue Mar 31 16:17:33.844562 2015] [perl:error] [pid 437] Main(379): Cannot
update session 22aa0a3548f1c1c5cb4eae72829f3118
[Tue Mar 31 16:17:33.845078 2015] [perl:debug] [pid 437] Logger.pm(21):
/usr/share/perl5/Lemonldap/NG/Handler/Main.pm 381:
[Tue Mar 31 16:17:33.845144 2015] [perl:error] [pid 437] Main(381): No data
found in session
This occurs only if idle timeout is configured.