There is no system like this by default. You could probably empty all the caches in some script every minutes but note that doing something like this would cause big performances issues especially on document loading. Emptying a cache every minutes is not very different from not having cache at all.
On Thu, Jun 11, 2015 at 4:00 PM, Enste, Patrick <patrick.en...@atos.net> wrote: > Great! Thanks :-) > > But I have another question: > Is it possible to set this observation.remote.enabled to false and say that > every instance should update its cache.....every minute? So that the > instances do not have to talk to each other, but have the same data after at > most 1 minute? > > Kind regards, > Patrick > > -----Original Message----- > From: users [mailto:users-boun...@xwiki.org] On Behalf Of Thomas Mortagne > Sent: Thursday, June 11, 2015 3:55 PM > To: XWiki Users > Subject: Re: [xwiki-users] Clustering of Xwiki > > Exacly. Note that modification on document is only one kind of events that is > shared, by default you also have extension related events (so that all > instance install extensions installe or one of them) and any component can > introduce new remote events. > > On Thu, Jun 11, 2015 at 2:27 PM, Enste, Patrick <patrick.en...@atos.net> > wrote: >> So Jgroups does not send any files or changes to the other cluster members, >> but only a message that some files or pages have been edited? So the files >> or pages get invalidated in the cache and the cluster members will update >> them by their own? >> >> Kind regards, >> Patrick >> >> >> -----Original Message----- >> From: users [mailto:users-boun...@xwiki.org] On Behalf Of Thomas >> Mortagne >> Sent: Thursday, June 11, 2015 2:03 PM >> To: XWiki Users >> Subject: Re: [xwiki-users] Clustering of Xwiki >> >> On Thu, Jun 11, 2015 at 1:02 PM, Enste, Patrick <patrick.en...@atos.net> >> wrote: >>> Hey everybody, >>> >>> I found some information on clustering for Xwiki where I have to set the >>> observation.remote.enabled to true. >> >>> Per my understanding the cache would be synchronized between every instance >>> (via Jgroups). >> >> Not exactly, it's not so much about synchronizing cache. As the property >> suggest what happen is that some events like modified documents go trough >> the cluster using JGroups and they are injected in the local event manager >> of other members to let all listeners know a document has been modified and >> do whatever they want about it (invalidate some entry from a cache because >> it depend on the modified document, update some local solr/lucene index, >> etc.). >> >>> >>> Now we want to use the following architecture: >>> >>> We have 2 datacenters. In each datacenter are 2 servers with a Xwiki >>> instance running (so 4 instances in 2 datacenters). As database we want to >>> use Oracle RAC. >>> >>> Is it possible to run these 4 instances on the Oracle RAC? Is it possible >>> to invalidate the cache of another instance if one instance has some write >>> action or something (so it generates a new cache on its own)? >> >> I don't really know Oracle RAC but if what you mean is that you have two >> groups of instance and each group have a different database as lon have you >> have some mecanisme that make sure those database are synchronized it should >> be ok too. You put everyone in the same cluster and documents related caches >> will be invalidated everywhere when you modifiy a document for example. >> >>> >>> We would have 1 loadbalancer to manage the load between the two datacenters >>> and 1 loadbalancer in every datacenter to manage the load between the 2 >>> instances. Every instance should show the same content... >>> >>> >>> Kind regards, >>> Patrick >>> >>> >>> _______________________________________________ >>> users mailing list >>> users@xwiki.org >>> http://lists.xwiki.org/mailman/listinfo/users >> >> >> >> -- >> Thomas Mortagne >> _______________________________________________ >> users mailing list >> users@xwiki.org >> http://lists.xwiki.org/mailman/listinfo/users >> _______________________________________________ >> users mailing list >> users@xwiki.org >> http://lists.xwiki.org/mailman/listinfo/users > > > > -- > Thomas Mortagne > _______________________________________________ > users mailing list > users@xwiki.org > http://lists.xwiki.org/mailman/listinfo/users > _______________________________________________ > users mailing list > users@xwiki.org > http://lists.xwiki.org/mailman/listinfo/users -- Thomas Mortagne _______________________________________________ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
