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[jetty-dev] Session Management with Redis

Hi all,


I want to use Redis as a backing for my sessions. I’ve seen, but the five years since any commit doesn’t inspire much confidence. I’ve also seen, but was unable to find the fruits of Denis’ labour.


So I’m currently making a NoSqlSessionManager extension based on Redis. For this I’m looking at the Mongo implementation and trying to stay close to it. Doing that I struck some code I don’t understand. Hopefully somebody here can enlighten me?


In org.eclipse.jetty.nosql.mongodb.MongoSessionManager.refresh(NoSqlSession, Object), which as I understand exists to update a session in memory from a session on disk, session.doPutOrRemove(attr,value) is called (l. 406). If the manager’s savePeriod is -2, that results in a, which is used to update a session on disk from memory. This does not look right to me, but I might (very well) be mistaken. Any clues?


A little further on in the same method (l. 420) this sequence is called:



I think the second call is equivalent to session.unbindValue(str, session.getAttribute(str));, but I’m not sure that that is what the authors meant. Can I do that or should it be:

                        Object o = session.getAttribute(str);

                        session.doPutOrRemove(str,null); // might also result in a save



Any help is appreciated,






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