Have you thought about the in-memory databases that can do this ? OSS ones don't come straight to mind, but I know Oracle times ten can do this. Alternatively clustering mysql should be something to look at, but if it's anything like Oracle RAC, it can get a bit messy.
HTH - Tony Lambert -----Original Message----- From: hampshire-boun...@mailman.lug.org.uk [mailto:hampshire-boun...@mailman.lug.org.uk] On Behalf Of Chris Simmonds Sent: 15 September 2009 17:15 To: hampshire@mailman.lug.org.uk Subject: [Hampshire] High availability database Hi, I have a situation where I need to keep data on several PCs on a LAN in sync. Any PC may update the data, with suitable locking, which must be pushed out to all the others. It must be possible for a PC to go down and be brought back on line again without impacting the others. The amount of data is not large - say a few thousand items - and the population of PCs is also modest - maybe 50 of them. All will be running some version of Red Hat Linux. Has anyone worked on something along these lines? One option I have considered is using, say, MySQL with one master node replicating to all the others and some mechanism to elect a new master if the original went down. But, that sounds messy. There must be a neater solution? Bye for now, Chris. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -------------------------------------------------------------- ------------------------------------------------------------------------------ Save Paper - Do you really need to print this e-mail? Visit www.virginmedia.com for more information, and more fun. This email and any attachments are or may be confidential and legally privileged and are sent solely for the attention of the addressee(s). If you have received this email in error, please delete it from your system: its use, disclosure or copying is unauthorised. Statements and opinions expressed in this email may not represent those of Virgin Media. Any representations or commitments in this email are subject to contract. Please note that we are migrating our email addresses to a company wide address of "@virginmedia.co.uk". If you are sending to a Telewest or ntl email address your email will be re-directed. Registered office: 160 Great Portland Street, London W1W 5QA. Registered in England and Wales with number 2591237 ============================================================================== -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --------------------------------------------------------------
