instance pooling ?
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From: Jean-Baptiste Nizet on 12 May 2010 08:38 On 12 mai, 04:40, gk <src...(a)gmail.com> wrote: > I read this text... > > in stateless session beans and Entity Beans server maintains a pool of > instances.whenever server got a request from client it takes one > instance from the pool and serves the client request. > > Does that mean statefull session bean does not have instance > pooling ? if that is so , why ? > Because stateful beans are stateful. This means that a client using a stateful bean should 1. get a new instance 2. call methods on the instance. Each method might modify the state of the bean, and this state is only valid for the current conversation 3. discard the bean instance. The container *could* put back the discarded bean instance into a pool, and give it back to another client wanting to start a new conversation . But then the state from the previous conversation would have to be reset to the initial values. I'm not sure the container would be able to do this automatically. If it's up to the bean developer to do it, then the bean becomes more difficult to implement correctly, and EJBs are supposed to be easy to implement. So just discarding the unused instances and recreating a new one for each new conversation is easier to do, and is probably as efficient, if not more efficient. JB.
From: Lew on 12 May 2010 08:46 Lew wrote: >>>> Why do you wish to keep track of your own posts? gk wrote: >>> Otherwise How do I read the responses posted by other >>> users ! ....posts are scrolling down in the web and after sometime its >>> lost. Google Groups clumps posts together by topic. Once you get more than one pageful, GG navigates to the latest posts in the thread. It has its faults, but hiding responses isn't one of them. PLEASE trim your posts and don't quote sigs. RedGrittyBrick wrote: >> Try a newsreader client program such as Thunderbird in conjunction with >> either your Internet service provider's news-server or with one of the >> free (or indeed commercial) news-servers. >> >> A dedicated newsreader will keep track of which messages you have >> already read, organise postiongs into conversational threads and take >> you to the next unread message in a convenient manner, they can also >> higyhlight conversations you have initiated or participated in, >> eliminate much spam and nuisance postings - and be beneficial in many >> other ways. >> >> http://en.wikipedia.org/wiki/Newsreader_%28Usenet%29http://www.google.com/Top/Computers/Software/Internet/Clients/Usenet/http://www.newsreaders.com/win/clients.htmlhttp://www.teranews.com/clients.html >> >> Thunderbird as a newsgroup clienthttp://opensourcearticles.com/introduction_to_thunderbird_8 -- Lew
From: Robert Klemme on 13 May 2010 07:30
On 12.05.2010 04:40, gk wrote: > N.B: how to keep track of My posts ? I am using google group web. > what to do so that I can come back and view my posts ? there is no > View My Post menu in the interface . Could you please let me know how > do I store my posts ? You can find your postings pretty easily through your profile in Google Groups. Other than that searching should work as well. There is a link "search for messages of this author" (or similar text) if you click on "further options" in a posting header. Cheers robert -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/ |