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 <376971.72020.qm@web38702.mail.mud.yahoo.com> <23635781.post@talk.nabble.com>
Date: Wed, 20 May 2009 08:42:26 -0700 (PDT)
From: Aaron Smuts <asmuts@yahoo.com>
Subject: Re: Remote Cache Server unregistering Client
To: JCS Users List <jcs-users@jakarta.apache.org>
In-Reply-To: <23635781.post@talk.nabble.com>
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I'm not sure what the problem is, but I recommend using the latest temp bui=
ld.  You can inject an event logger into both the server and the client.  Y=
ou could monitor them directly if you have some way to monitor your custom =
even logs.  There are new major API addition.  Also, there are a bunch of m=
inor improvements in the latest version.  Many logging improvements as well=
.   . . . Again, I'm not sure why this is happening.  =0A=0AHow often dos t=
his happen?  How long after restart does it happen?=0A=0AWe might need to b=
uild in a way for you get get the list of clients from the server. Some sim=
ple server admin page might help.  Hmmn.  You might want to check the statu=
s of the client by looking at the stats on the JCSAdmin.jsp for a region.  =
The listener should indicate its health.=0A=0AAaron=0A=0A=0A=0A----- Origin=
al Message ----=0AFrom: sachamul <sacha_mul@yahoo.com>=0ATo: jcs-users@jaka=
rta.apache.org=0ASent: Wednesday, May 20, 2009 9:46:42 AM=0ASubject: Re: Re=
mote Cache Server unregistering Client=0A=0A=0AHi Aaron,=0AI am using 1.3.=
=0A=0AThere were no errors in the log.=0A=0AYesterday we bounced three clie=
nts because it seemed like it was not=0Aregistered, then later we saw that =
another client got disconnected. We=0Abounced that also. From past 24 hrs t=
hings look ok.=0A=0AI monitor the connection between Remote Server and Clie=
nt regularly (on the=0ARemote Server) using netstat.  Some times the Remote=
 Server disconnects to a=0Aclient and then reconnects, but sometimes it nev=
er attempts to connect=0Aagain.=0A=0AThe JCS documentation says =E2=80=9CTh=
e remote cache server broadcasts updates to=0Alisteners other than the orig=
inating source. If the remote cache fails to=0Apropagate an update to a cli=
ent, it will retry for a configurable number of=0Atries before de-registeri=
ng the client.=E2=80=9D=0A=0AOur applications receives 800 req/sec, 24/7 an=
d there are a lots of hits on=0Athe client and the Remote Cache. Is there a=
 chance that the Remote Server=0Atries to deliver an update to the client a=
nd the client does not respond,=0Adue to which the Remote Server de-registe=
rs the client and never sends any=0Aupdates to it again.=0A=0AThanks,=0ASac=
hin=0A=0A=0AAaron Smuts wrote:=0A> =0A> =0A> What version of JCS are you us=
ing?  How often does this happen?  Are there=0A> any errors in the logs?=0A=
> =0A> =0A> =0A> ----- Original Message ----=0A> From: sachamul <sacha_mul@=
yahoo.com>=0A> To: jcs-users@jakarta.apache.org=0A> Sent: Wednesday, May 20=
, 2009 8:33:40 AM=0A> Subject: Remote Cache Server unregistering Client=0A>=
 =0A> =0A> Hi,=0A> We have 8 Webservers which talk to a single Remote Cache=
 Server.=0A> =0A> After some time, the Remote Server stops sending updates =
to some of the=0A> registered clients.=0A> This is a production server issu=
e and the only way for me to re-register=0A> the=0A> client is to bounce th=
at client, which is not a good solution. Is there=0A> any=0A> configuration=
 attributes that might help?=0A> =0A> Please can you tell me why this is ha=
ppenning.=0A> Following is client Config:=0A> =0A> jcs.auxiliary.RC.attribu=
tes.RemoteHost=3Dprdjcs01=0A> jcs.auxiliary.RC.attributes.RemotePort=3D1101=
=0A> jcs.region.rCache=3DRC=0A> jcs.region.rCache.cacheattributes=3Dorg.apa=
che.jcs.engine.CompositeCacheAttributes=0A> jcs.region.rCache.cacheattribut=
es.MaxObjects=3D100000=0A> jcs.region.rCache.cacheattributes.UseMemoryShrin=
ker=3Dtrue=0A> jcs.region.rCache.cacheattributes.ShrinkerIntervalSeconds=3D=
600=0A> jcs.region.rCache.cacheattributes.MemoryCacheName=3Dorg.apache.jcs.=
engine.memory.lru.LRUMemoryCache=0A> jcs.region.rCache.elementattributes.Ma=
xLifeSeconds=3D86400=0A> jcs.region.rCache.elementattributes.IsEternal=3Dfa=
lse=0A> jcs.region.rCache.elementattributes.IsSpool=3Dtrue=0A> jcs.region.r=
Cache.elementattributes.IsRemote=3Dtrue=0A> jcs.region.rCache.elementattrib=
utes.IsLateral=3Dtrue=0A> =0A> Following is the Remote Server Config:=0A> =
=0A> registry.host=3Dlocalhost=0A> registry.port=3D1101=0A> remote.cache.se=
rvice.port=3D1101=0A> remote.cluster.LocalClusterConsistency=3Dtrue=0A> rem=
ote.cluster.AllowClusterGet=3Dtrue=0A> =0A> jcs.default=3D=0A> jcs.default.=
cacheattributes=3Dorg.apache.jcs.engine.CompositeCacheAttributes=0A> jcs.de=
fault.cacheattributes.MaxObjects=3D450000=0A> jcs.default.cacheattributes.M=
emoryCacheName=3Dorg.apache.jcs.engine.memory.lru.LRUMemoryCache=0A> jcs.de=
fault.cacheattributes.UseMemoryShrinker=3Dfalse=0A> jcs.default.cacheattrib=
utes.MaxMemoryIdleTimeSeconds=3D100=0A> jcs.default.elementattributes=3Dorg=
.apache.jcs.engine.ElementAttributes=0A> jcs.default.elementattributes.IsEt=
ernal=3Dfalse=0A> jcs.default.elementattributes.MaxLifeSeconds=3D2000000=0A=
> jcs.default.elementattributes.IsSpool=3Dtrue=0A> jcs.default.elementattri=
butes.IsRemote=3Dtrue=0A> jcs.default.elementattributes.IsLateral=3Dtrue=0A=
> =0A> =0A> This is quite urgent and any help will be really helpful.=0A> =
=0A> Thanks,=0A> Sachin=0A> -- =0A> View this message in context:=0A> http:=
//www.nabble.com/Remote-Cache-Server-unregistering-Client-tp23634538p236345=
38.html=0A> Sent from the JCS - Users mailing list archive at Nabble.com.=
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