on 3/13/09 7:17 PM, Christopher Webber said: > Oops... I am just compiling a list still and heard that nginx did TCP > level load balancing. I will take that off my list.
If you want to talk about load balancing, you first need to make sure you understand the basics, and the article at <http://en.wikipedia.org/wiki/Load_balancing_(computing)> isn't bad. It even includes a link to Tony Bourke's O'Reilly book on the subject, which is a must read for anyone getting into this subject. It's not that great, but as an intro, I don't know of anything that's better. However, the mailing list that Tony runs is much better than the book. You can get lots of good info there. Then you have to start looking at the application. General load balancing techniques may very well not apply well to all protocols or systems. For example, putting NTP time servers behind load balancers are a really bad idea. See the brief mention in section X.Y.Z of the NTP Public Service Project Community Supported Documentation at <http://preview.tinyurl.com/ar68dz>, and the expanded article "Building Scalable NTP Server Infrastructures" that I wrote for _;login:_ magazine at <http://www.usenix.org/publications/login/2008-10/index.html>. If you don't have a USENIX account, let me know and I'll see if I can dig up a copy of the PDF version they sent me as the final draft. With regards to specific protocols and applications, you'd need to go to the documentation, FAQs, mailing lists, etc... that are appropriate to your software and find out what the experts suggest. If you're using OpenLDAP, then they have a variety of information sources for you linked from their main page at <http://www.openldap.org/>. Some quick Googling has turned up BalanceNG (see <http://www.inlab.de/balanceng/>) and Pure Load Balancer (see <http://plb.sunsite.dk/performance.html>) as two potential options that might work for you, but you really should check with the experts who know your software best. -- Brad Knowles <[email protected]> If you like Jazz/R&B guitar, check out LinkedIn Profile: my friend bigsbytracks on YouTube at <http://tinyurl.com/y8kpxu> http://preview.tinyurl.com/bigsbytracks _______________________________________________ Tech mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
