Re: JavaSpace Implementations
Shay Hassidim <[email protected]>
| Newsgroups | gmane.comp.java.sun.javaspaces |
|---|---|
| Message-ID | <[email protected]> |
Sundar, What you have described below can be done with GigaSpaces out of the box. No need to ask someone else to build this for you. Needless to mention building high-availability , fail-over replication is very complex task. I strongly suggest you to approach GigaSpaces sales team to find for you optimized model to use our space clustering technology. See below what we can go for you: http://www.gigaspaces.com/wiki/display/GS/Using+Service+Grid+to+Deploy+Parti tioned+Cache http://www.gigaspaces.com/wiki/display/GS/Using+Service+Grid+to+Deploy+Repli cated+Cache http://www.gigaspaces.com/wiki/display/GS/Using+Service+Grid+to+Deploy+Parti tioned+Cache+with+Backup http://www.gigaspaces.com/wiki/display/GS/Replicated+Cache+Topology http://www.gigaspaces.com/wiki/display/GS/Partitioned+Cache+Topology http://www.gigaspaces.com/wiki/display/GS/Service+Grid_ http://www.gigaspaces.com/wiki/display/GS/J2EE+WebLogic+8+Integration There is very good example comes with the product: <GigaSpaces ROOT>\j2ee\examples\ReplicatedSessionBean Shay -----Original Message----- From: Sundaranathan [mailto:[email protected]] Sent: Thursday, August 03, 2006 1:02 PM To: [email protected] Subject: Re: JavaSpace Implementations Dan, Here is my exact requirement. I need a shared memory which stores a java object which will be accessed by applications running in 8 instances of weblogic. I don't want to have a single point of failure so i need the functionality of failover. Also i need synchronization if there is more than one shared memory. Or can have the shared object within weblogic instances. If one instance goes down then the object in memory should be replicated across instances as soon as possible. To the maximum i may have couple of thousand entries to be precise today it is 5000 and may increase. I hope i answered your queries. Please let me know if you require more details. thanks, -Sundar. Dan Creswell wrote: > Hi, > > It would be useful if you could be more specific about your needs. > Failover and replication are simply features and there are a multitude > of ways to implement them and some approaches work better than others in > various scenarios. > > Further, depending on your exact needs, you may need to carefully select > a hardware configuration. > > So: > > (1) What speed of failover do you require? > > (2) Why do you need replication? Presumably you don't want to > lose Entry's? > > (3) How many Entry's do you plan to have in your JavaSpace at any > particular time? > > (4) Are you using the JavaSpace for messaging or to hold state > long term > like an RDBMS? > > (5) How many clients do you anticipate having connected to the > JavaSpace? > > Declaration: I am the author of Blitz so I have my own biases! I'm > also asking the above questions to try and understand what I would > implement were I to do it. > > I am not aware of an opensource implementation that addresses these > issues. GigaSpaces does but, obviously, that's a commercial product > with associated cost models etc. > > Best wishes, > > Dan. > > Sundaranathan wrote: >> Hi All, >> >> Can anyone please let me know, if there is any opensource JavaSpace >> implementation which has the functionality of FailOver and Replication. >> I went through Blitz site and found that failover and replication >> functionality has to be developed. >> >> >> thanks, >> -Sundar. >> >> This e-mail and any files transmitted with it are for the sole use of >> the intended recipient(s) and may contain confidential and privileged >> information. >> If you are not the intended recipient, please contact the sender by >> reply e-mail and destroy all copies of the original message. >> Any unauthorized review, use, disclosure, dissemination, forwarding, >> printing or copying of this email or any action taken in reliance on >> this e-mail is strictly >> prohibited and may be unlawful. >> >> Visit us at http://www.cognizant.com >> >> =========================================================================== >> >> To unsubscribe, send email to [email protected] and include in >> the body >> of the message "signoff JAVASPACES-USERS". For general help, send >> email to >> [email protected] and include in the body of the message "help". >> >> To view past JAVASPACES-USERS postings, please see: >> http://archives.java.sun.com/archives/javaspaces-users.html >> > > =========================================================================== > > To unsubscribe, send email to [email protected] and include in the > body > of the message "signoff JAVASPACES-USERS". For general help, send > email to > [email protected] and include in the body of the message "help". > > To view past JAVASPACES-USERS postings, please see: > http://archives.java.sun.com/archives/javaspaces-users.html > This e-mail and any files transmitted with it are for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email or any action taken in reliance on this e-mail is strictly prohibited and may be unlawful. Visit us at http://www.cognizant.com =========================================================================== To unsubscribe, send email to [email protected] and include in the body of the message "signoff JAVASPACES-USERS". For general help, send email to [email protected] and include in the body of the message "help". To view past JAVASPACES-USERS postings, please see: http://archives.java.sun.com/archives/javaspaces-users.html =========================================================================== To unsubscribe, send email to [email protected] and include in the body of the message "signoff JAVASPACES-USERS". For general help, send email to [email protected] and include in the body of the message "help". To view past JAVASPACES-USERS postings, please see: http://archives.java.sun.com/archives/javaspaces-users.html