* rc_du Tirgger 
[ý]
1. Postgresql 8.4 ̻ (PGPool )
  - 2011 2 22  PGPool + Postgresql  
  - pgcluster   ް   ҿ 
      LB ؼ ȭ  DB    
        
    
2. Ʈ    5~15%  ߻
  - ε /  ؼ Ʈ     5 ~ 15%   
  - ٿε      Ÿ

  ==> 丮 /̵ Lock  ߰ߵǾ  ʱ

[]
1.  Tirgger ׻  Ѵ.
2. opendav ɿ ؼ Ѵ.
 - 丮 /, ε, ٿε, , ̵, , ̸ 
