Thanks Peter. I will upgrade to 1.2 and update the neo4j properties file. Since the graph was created with 0.8 snapshot, I hope it will be compatible with 1.2 release. -Hemant ________________________________________ From: [email protected] [[email protected]] on behalf of Peter Neubauer [[email protected]] Sent: Thursday, January 20, 2011 10:45 AM To: Neo4j user discussions Subject: Re: [Neo4j] Neo4j REST server in readonly mode
Joshi, the 0.8 REST server is not longer acive and merged into the Neo4j Server, so we are talking about the neo4j.properties in the conf/ directory of the server download. Setting the server into readonly mode will not block the other process accessing the files, since they will not be locked by the Server incstance. )I have not tested this though), So your scenario should work with the Neo4j 1.2. download and some neo4j.properties tweaks. HTH! Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Thu, Jan 20, 2011 at 5:36 PM, Joshi Hemant - hjoshi <[email protected]> wrote: > Thanks for the replies. I am not sure I understand the 2 options you have > listed Peter. Let me just write about the no-JMX option first. Where do you > suggest I change the neo4j.properties file? I suppose you mean the neo4j > database directory. But then the neo4j database would be read-only for both > the separate java process and REST server. Am I right? The other possibility > is the neo4j-rest-standalone-0.8-SNAPSHOT/conf folder which has wrapper.conf > file. > > As it stands now, if I start the REST server (out of the box), I can write my > standalone programs to use EmbeddedReadOnlyGraphDatabase and that works just > fine. I am trying to reverse the roles here so that REST is read-only and the > standalone program could use the EmbeddedGraphDatabase. > > -Hemant > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Peter Neubauer > Sent: Thursday, January 20, 2011 4:00 AM > To: Neo4j user discussions > Subject: Re: [Neo4j] Neo4j REST server in readonly mode > > Actually, > this is not quite true. If you really want it, you can start the > server readonly and disabling caches in order to to get stale data by > setting it in neo4j.properties as > > read_only = true > cache_type = none > > see http://docs.neo4j.org/chunked/snapshot/operations-monitoring.html#_jmx > (just added the clear() to the docs, will come up in some minutes > through the build process) > > This will, however, result in exceptions being thrown in the mutating > operations on REST level. > > Another way to trigger a readonly mode updating the cache is to use > JMX. There is a cache.clear() method that you can trigger, making the > REST readonly instance eventually consistent (refreshing) at intervals > you decide. > > Code is something along the lines of > > Neo4jManager manager = new Neo4jManager( graphDb.getManagementBean( > Kernel.class ) ); > long nodeIDsInUse = manager.getCacheBean().clear(); > > And of course you can call that via JMX remotely from your inserting system. > > Would that be something of use? > > Cheers, > > /peter neubauer > > GTalk: neubauer.peter > Skype peter.neubauer > Phone +46 704 106975 > LinkedIn http://www.linkedin.com/in/neubauer > Twitter http://twitter.com/peterneubauer > > http://www.neo4j.org - Your high performance graph database. > http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. > > > > On Wed, Jan 19, 2011 at 10:11 PM, Jim Webber <[email protected]> wrote: >> Hi Hemant, >> >> Bringing up the REST API in readonly mode is not possible I'm afraid. >> >> We could consider adding it to the Neo4j server, depending on the effort >> required and whether there are other workarounds. >> >> Jim >> _______________________________________________ >> Neo4j mailing list >> [email protected] >> https://lists.neo4j.org/mailman/listinfo/user >> > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > *************************************************************************** > The information contained in this communication is confidential, is > intended only for the use of the recipient named above, and may be legally > privileged. > > If the reader of this message is not the intended recipient, you are > hereby notified that any dissemination, distribution or copying of this > communication is strictly prohibited. > > If you have received this communication in error, please resend this > communication to the sender and delete the original message or any copy > of it from your computer system. > > Thank You. > **************************************************************************** > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
