3. BlogEverything about database,business.(Most for PostgreSQL).
4. sky postgresql clusterPostgreSQL HA via three host, include two postgresql (primary and stream replication standby) and one vote host.
5. linux performance analyzeLinux's system activity information from sar, this project will use postgresql manage bulk Linux hosts. These hosts registed in postgresql, and every day load it's sar info into postgresql, and use postgresql's SQL analyze the hosts performance, like performance's system activity information and TOP resource consume's hosts, and so on.