Mysql

http://cookiesareforclosers.com/blog/2008/06/linkedin-architecture interesing notes about LinkedIn architecture (JAVA + MYSQL + ORACLE)

http://www.scribd.com/doc/2569319/Real-World-Web-Performance-Scalability 193 pages of realy good summaries on the topic

http://www.scribd.com/doc/2569362/Exploring-Amazon-EC2-for-Scaleout-Applications very interesting post from people who have done benchmarking and testing amazon EC2 platform

http://venublog.com/2008/04/17/notes-on-scaling-heavy-concurrent-writes-in-real-time/ notes about how to scale innodb writes. to summ it up: shard, use int as PKEY (convert hash to int using base-convert, batch lots of write into one trx. / nothing special

http://burtonator.files.wordpress.com/2008/04/spinn3r-architecture-talk-2008-mysql-users-conference.pdf PDF slided for spinner sharded mysql architecture

http://krow.livejournal.com/590912.html interesting thoughts and notes about DBs and scalable systems

http://www.samag.ru/cgi-bin/go.pl?q=articles;n=07.2007;a=02 from Russian SysAdmin magazine

http://www.mysqlperformanceblog.com/2006/07/07/thoughts-on-mysql-replication/ some interesting comments on build-in mysql replication, read comments!!!

http://www.opennet.ru/opennews/art.shtml?num=13909 postgresql top and other similar monitoring tools for mysql, linux io, etc

http://highscalability.com/youtube-architecture presentation about Youtube internal architecture, details on how youtube can scale that much