I thought I would clarify because my lost post sounded rather jerkish. (sorry).
I am not disagreeing that code stability is not a higher priority. What my point is, is that the concept of facilitating updates that minimize the downtime of an application is not flawed. I see your point in that the added complexity makes software stability harder to achieve, but that is an implementation issue (our job to make sure it works well). Also, there are also ways to build a good methodology into the software. For example, there is no real reason why pulling a node out of a load blancer pool, and deploying a new application has to be two manual steps. Although, it could be argued that deploying to every system at the same time is risky, so in that case you could design a tool that would allow the administrator to step the deployment process through each node. In this way they can verify that everything is still ok after each update. This type of management is very reliable and very predictable, because there is still some human intervention. -Jason > -----Original Message----- > From: Jason T. Greene > Sent: Thursday, June 29, 2006 4:40 PM > To: Remy Maucherat; Sacha Labourey; Robb Greathouse; Stan Silvert; Ryan > Campbell; 'JBoss.org development list'; Scott M Stark > Cc: The Core; Bill Burke > Subject: RE: [JBoss-dev] Tomcat 6 redeploy. > > > -----Original Message----- > > From: Remy Maucherat > > Sent: Thursday, June 29, 2006 4:00 PM > > To: Sacha Labourey; Robb Greathouse; Stan Silvert; Ryan Campbell; > > 'JBoss.org development list'; Scott M Stark > > Cc: The Core; Bill Burke > > Subject: RE: [JBoss-dev] Tomcat 6 redeploy. > > > > -snip- > > > Maybe these techniques will be implemented eventually, but given the > > target users need mature stuff, it's going to take a long time overall. > > It's quite simple: users who want to use a cluster usually want the best > > quality of service, while at the same time generic automagical features > > like these ones add complexity and unpredictability. If you'd like, you > > can try and sell this sort of deployment methodology to the DGI, for > > example ;) > > > > There are some issues at the moment in mod_jk about quality of service, > > that are a technical prerequisite to all of the fancy marketing friendly > > features, so we're going to start there. > > There are ways to do this in a very predictable manner. > > Although, I would be curious to hear your solution for achieving 5 9's of > uptime while still allowing updates. > > -Jason Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ JBoss-Development mailing list JBoss-Development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-development
