ืื ืืฉืขื ืืจ - ืืืืขืจืืขืืขืฆื ืคึฟืื ืืึทืืืึทื - ืื ืกืคึผืืืขืจื.
ืึท ืื ืืฉืขื ืืจ ืงืขื ืขื ืืึธื ืึทืืฅ. (ื) ืจ' ืืืื.
ืขืคึผืืืจืึทืคืก.
ืึธืืขืจ ืึท ืืขืจืฆืืืืื ื ืืืขืื ืืืึธืก ืึท ืืึทืืึทืืืืก ืึทืืืื ืืกืืจืึทืืึธืจ ืืึทืจืฃ ืืขืืขื ืงืขื ืืืื ืคึผืจืึธืืจืึทืืืื ื ืคืึทืจืืึทื ืืขื ืืืื.
ืืึทืืืึธืืข
ืึทืืข ื ืขืืขื ืืขื ืขื ืืขืืืื. ืื ืฆืืคืึทืื ืืขื ืขื ืืจืึทืค. ืืขืจ ืืึทืืขืจืืึทื ืจืขืคึผืจืึทืืขื ืฅ ืืืืื ืื ืคึผืขืจืืขื ืืขื ืืืื ืื ื ืคืื ืืขื ืืืืจ.
ืึธืคึผืืืืงืขื ืื ื ืคืื ืืืึธืจืึทื ืืื: ืื ืคึผืืึทื ื ืขื ืกืขืจืืข ืคืื โโืึทืจืืืงืืขื ืืืขื ื ืืฉื ืึทื ืืืึทืืื ืึท ืืืืืืื ืืื ืคึผืื ืืืขื ืืึทืฉืจืืึทืืื ื ืคืื ืื ืืืฉื ืืื ืกืงืจืืคึผืก ืืขื ืืฆื. ืื ืืึทืืขืจืืึทืืก ืงืขื ืขื ื ืื ืืืื ืืขืืืืื ื ืืื "ืืื ืืื".
ืขืจืฉืืขืจ, ืจืขืื ืฆื ืืขืจ ืืจืืืก ืืึทื ื ืคืื ืืึทืืขืจืืึทื,
ืฆืืืืืื ืก, ืจืขืื ืฆื ืืขืจ ื ืึธืขื ื ืฉืืืืืช ืืื ืื ืคึผืจืึธืืืงืฆืืข ืืึทืืข ืคืื โโืึท ืคืึทืงืืืฉ ืงืื ื.
ืืขืจืืืข ืจ ืฐืขื ื ื ื ืืจืืืงืืข ื ืื ืืืืื ื ื ื ืจ ืืืืขืข ื ืื ื ืืืฉืจืฒืืื ืืขื , ืื ื ืืข ืจ ืืืืขืืฒื ืข ืจ ืคืืจื .
ืืคึฟืฉืจ ืืื ืืขืจ ืฆืืงืื ืคึฟื ืื ืกืืกืืขื ืืืขื ืืืึทืงืกื ืฆื ืืขืจ ืืืจืื ืคืื ืคึผืึธืกืืขื ืืืืฃ GitHub, ืึธืืขืจ ืืคึฟืฉืจ ื ืืฉื. ืฆืืื ืืืขื ืืืืึทืื.
ืืขืจ ืึธื ืืืื ืคืื ืืขืจ ืืขืฉืืืืข - "'.
ืืืึธืก ืืขืืจืืคื ืืื ืึท ืจืขืืืืืึทื, ืืื ืื ืืขืจืกื ืึทืืืขืืืื ืืขืจืืื ืขื - "ยป
ืคืืจืืืืก ืืืจืฃ ืืื ืืืก ืืืขืก?
ื ื , ืขืจืฉืื ืก , ืื ื ื ืืฉ ื ืคืืจืืขืกื , ืืขืืขื ืงืข ื ื ื ืืขืจืืขื ืข ืืข ื ืื ื ืืข ืจ ืฑืื ื .
ืฆืืืืืื ืก, ืฆื ืกืืกืืขืืืืืืืจื ืืืืก ืืขื ืืื ืืขืฉืจืืื. ืืืืื ืืื ืืื ืืืื ืื ืืืืื ืฆื ืฆืขืืืฉื ืืื ืคืืจืืขืกื ืืขืืืืกืข ืืืืื.
ื ื, ืืื ืื ืืขืจืกื ืืืืืืืง ืืึทื ืืื ืึทื ืขืก ืงืขื ืงืืืขื ืืื ืืึทื ืืืง ืคึฟืึทืจ ืขืืขืฆืขืจ ืืื ืืขืืคื ืืื ืืืกืืืืื ืจืืื ืืืขื ืืื ื ืื ืจืึธื ืืื ื ืืฉื ืงืึทืืขืงืืื ื ืึท ืืจืึทืืืืข. ืืื ืื ืืขืจืข ืืืขืจืืขืจ, ืคึฟืึทืจืืขืกืขืจื ืืืื ืงืึทืจืืึท (ื ืืฉื ืืึทืืจืึธืื ืก). ืืืืึทื ืื ืืขืจืกื ืืืขืจืืคืื ืืึทื ืืื ืืขืจ ืืืขืื ืืื ืืขืืื ืงืขื. ืื ืืืืคึผื ืืึทื ืืื ืฆื ืืขืคึฟืื ืขื ืึท ืืขืืึทื ืง. ืึธืืขืจ ืฆื ืคืึทืจืืืึทื ืืืขื ืึท ืืขืืึทื ืง ืืื ืคืึทืงื ืืื ืึท ืจืืื ืืขืื ืืฉ ืงืฉืื.
ืึทืืื, ืืึธืืืจ ืึธื ืืืืื, ืืืกืืขืืืืืึทื ...
ืคืึธืจืืืืึทืืืึธื ืคืื ืื ืคึผืจืึธืืืขื.
ืื ืืืฆื:
PostgreSQL (10.5) ืืึทืืึทืืืืก, ืืขืืืฉื ืืึทืกืข ืืืคึผ (OLTP + DSS), ืืืื-ืืืื ืืึทืกืข, ืืืื ืืื ืื AWS ืืืึธืืงื.
ืขืก ืืื ืงืืื ืืึทืืึทืืืืก ืืึธื ืืืึธืจืื ื; ืื ืคืจืึทืกืืจืึทืงืืฉืขืจ ืืึธื ืืืึธืจืื ื ืืื ืฆืืืขืฉืืขืื ืืื ืื ืคืึธืจืขื ืคืื ื ืึธืจืืึทื AWS ืืืฉืืจืื ืืื ืึท ืืื ืืืึทื ืงืึทื ืคืืืืขืจืืืฉืึทื.
ืขืก ืืื ืคืืจืืื ืื:
ืืึธื ืืืึธืจ ืื ืคืึธืจืฉืืขืืื ื ืืื ืกืืึทืืืก ืคืื ืื ืืึทืืึทืืืืก, ืืขืคึฟืื ืขื ืืื ืืึธืื ืขืจืฉื ืืื ืคึฟืึธืจืืึทืฆืืข ืคึฟืึทืจ ืึธืคึผืืืืืืื ื ืฉืืืขืจ ืืึทืืึทืืืืก ืคึฟืจืืื.
ืงืืจืฅ ืืงืืื ืึธืืขืจ ืึทื ืึทืืืกืืก ืคืื ืืืืืื ื ืึธืคึผืฆืืขืก
ืฆื ืึธื ืืืืื ืืื, ืืึธืืืจ ืคึผืจืืืืจื ืฆื ืึทื ืึทืืืื ืื ืึธืคึผืฆืืขืก ืคึฟืึทืจ ืกืึธืืืืข ืืขื ืคึผืจืึธืืืขื ืคึฟืื ืื ืคืื ื ืคืื ืืืื ืื ื ืคืื ืึท ืงืึธืืคึผืึทืจืึทืืืืืข ืึทื ืึทืืืกืืก ืคืื ืื ืืขื ืขืคืืฅ ืืื ืืืกืึทืืืืึทื ืืืืืฉืื ืคึฟืึทืจ ืื ืื ืืฉืขื ืืจ, ืืื ืืึธืื ืื ืืืึธืก ืืขื ืขื ืขื ืืืืืึทืื ืฆื ืขืก ืืืื ืื ืกืืึทืคืคืื ื ืคึผืืึทื, ืืึทื ืืืขื ืืื ืื ืืขื ืขืคืืฅ ืืื ืืึธืกืกืขืก ืคืื ืคืึทืจืืืึทืืืื ื.
ืึธืคึผืฆืืข 1 - "ืืจืืขืื ืืืืฃ ืคืึธืืขืจืื ื"
ืืืจ ืืึธืื ืึทืืฅ ืืื ืขืก ืืื. ืืืื ืืขืจ ืงืื ื ืืื ื ืืฉื ืฆืืคึฟืจืืื ืืื ืขืคึผืขืก ืืื ืื ืคืึทื ืืงืฉืึทื ืึทืืืื, ืคืึธืจืฉืืขืืื ื ืคืื ืื ืืึทืืึทืืืืก ืึธืืขืจ ืึทืคึผืืึทืงืืืฉืึทื, ืขืจ ืืืขื ืืขืื ืฆื ืืืืกื ืื ืืืึท ืขื ืืืฉืึทื ืืจื ืืืจื E- ืคึผืึธืกื ืึธืืขืจ ืืืจื ืฉืึทืคึฟื ืึทื ืืื ืฆืืืขื ื ืืื ืื ืืืืขื ืืึทืฅ.
ืืขืจ ืื ืืฉืขื ืืจ, ื ืึธื ืืืงืืืขื ืื ืึธื ืืึธื, ืืืขื ืคึฟืึทืจืฉืืืื ืืขื ืคึผืจืึธืืืขื, ืคืึธืจืฉืืึธืื ืึท ืืืืืื ื ืึธืืขืจ ืฉืืขืื ืืขื ืคึผืจืึธืืืขื ืืืืฃ ืื ืฆืืจืืง ืืืจื ืขืจ, ืืึธืืคึผืื ื ืึทื ืึทืืฅ ืืืขื ืืึทืฉืืืกื ืืื, ืืื ืกืืึท ืืื ืกืืึท, ืึทืืฅ ืืืขื ืืึทืื ืืืขืจื ืคืืจืืขืกื.
ืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ, ืืจืืืึทื ืืื ืืึทืืคึผืกืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ:
1. ืขืก ืืื ื ืื ืืึทืจืคึฟื ืฆื ืืึธื ืขืคึผืขืก ืขืงืกืืจืข.
2. ืขืก ืืื ืฉืืขื ืืืง ืื ืืขืืขืื ืืืื ืฆื ืืึทืื ืืงืกืงืืืกืื ืืื ืฉืจืืืฃ.
3. ื ืคึผืืึทืฅ ืคืื ืฆืืึทื ืึทื ืืืจ ืงืขื ืขื ืคืึทืจืืจืขื ืืขื ืืื ืืืื ืืืืื ืืืกืงืจืขืฉืึทื.
ืืจืืืึทื ืืื ืืึทืืคึผืก:
1. ืืืืขืจ ืึธืืขืจ ืฉืคึผืขืืขืจ, ืืขืจ ืงืื ื ืืืขื ืืจืึทืืื ืืืขืื ืื ืขืกืึทื ืก ืคืื ืขืงืืืกืืขื ืฅ ืืื ืื ืืืืขืจืกืึทื ืืืฉืจ ืืื ืืขื ืืืขืื ืืื ืึทืืึธื ืืืืืขืจ ืคืจืขืื ืืื ืื ืงืฉืื - ืืืึธืก ืืึธื ืืื ืืึทืฆืึธืื ืืื ืืืื ืืขืื? ืื ืงืึทื ืกืึทืงืืืึทื ืก ืืื ืฉืืขื ืืืง ืื ืืขืืืข - ืื ืืืืื ืงืฉืื ืืื ืืืขื ืืขืจ ืงืื ื ืืืขื ืืึทืงืืืขื ืืึธืจื ืืื ืืืืึทืืืข ืืืึท ืืขืืื ื. ืืื ืืขืจ ืคืืืขืจ ืืืขื ืืืื ืืืืืืง. ืขืก ืืื ืืจืืืขืจืืง.
2. ืื ืืฉืขื ืืจ ืึทื ืืืืืงืืื ื - ื ืื.
3. ืฉืืืขืจืืงืืืื ืืื ืคึผืืึทื ืืจืื ื ืึทืจืืขื ืืื ืืึธืืืื ื
ืึธืคึผืฆืืข 2- "ืืึทื ืกืื ื ืืื ืืึทืืืืจืื ื, ืกืืืืื ื ืืื ืึธื ืืึธื ืฉืืืืขื"
ืคึผืึทืจืึทืืจืึทืฃ ืงืกื ืืืงืก- ืืืึธืก ืืึธื ืืืจ ืืึทืจืคึฟื ืึท ืืึธื ืืืึธืจืื ื ืกืืกืืขื, ืืืจ ืืืขืื ืืึทืงืืืขื ืึทืืฅ ืืื ืจืืงืืืขืก. ืืืจ ืคืืจื ืึท ืคึผืืึทืฅ ืคืื ืึทืืข ืกืึธืจืฅ ืคืื ืคึฟืจืืื ืฆื ืื ืืึทืื ืืืขืจืืขืจืืื ืืื ืืื ืึทืืืฉ ืงืืงื, ืงืขืจ ืืืืฃ ืึทืืข ืกืึธืจืฅ ืคืื ืงืึธืื ืืขืจืก, ืฉืืขืื ืึทืืฅ ืืื ืืืฉื ืืื ืคึผืืจืืึทืืืงืื ืึทื ืึทืืืื ืจืฉืืืืช ืืื ืืืฉื. ืืื ืึท ืจืขืืืืืึทื, ืืืจ ืืึธืื ืฉืืื ืึธืืขืจ ื ืืฉื ืึทืืื ืฉืืื ืืจืึทืคืก, ืืืฉื, ืจืืคึผืึธืจืฅ. ืื ืืืืคึผื ืืึทื ืืื ืฆื ืืึธืื ืืขืจ, ืืขืจ.
ืคึผืึทืจืึทืืจืึทืฃ ืงืกื ืืืงืก-ืืืจ ืืืฉืขื ืขืจืืื ืืขืืืงืืื ืืื ืงืึทืืขืจ ืื ืึทื ืึทืืืกืืก ืคืื ืึทืืข ืืขื.
ืคึผืึทืจืึทืืจืึทืฃ ืงืกื ืืืงืก-ืืืจ ืืจืืืื ืึท ืืืืขืจ ืืึธืงืืืขื ื, ืืืจ ืจืืคื ืืขื ืืึธืงืืืขื ื ืคืฉืื - "ืืื ืืึธื ืืืจ ืฉืืขืื ืึทืจืืืฃ ืึท ืืึทืืึทืืืืก."
ืคึผืึทืจืึทืืจืึทืฃ ืงืกื ืืืงืกโืืขืจ ืงืืกืืืืขืจ , ืืขืจืืขืขื ืื ืง ืืข ื ืืื ืฆ ื ืคืจืืื ื ืคื ื ืืจืืค ื ืื ื ืฆืืคืขืจื , ืื ื ืื ื ืงืื ืืขืจืืฉ ื ื ืืืฐ ื ืืืืื , โ ืืืฆ ื ืฐืข ื ืื ืฅ ืคื ืจ ืืื ืื , ืืื ื ืืจืืขื . ืืื ืขืจ ืืืืื ืืื ืืืืื ืืื ืคึผืืื ืืึทืกืื ืืื ืืืื ืคืื ืึทื ืฆืืขื ืจืขืกืืจืกื. ืื ืคืึทืจืืืึทืืืื ื ืืื ืืืื ืืืืขืจ ืึทื ืืื ืืืขืจ ืขื ืืืฉืึทื ืืจื ืึทืจืืขื ืืจืืืก. ืืึธืืืื ื ืืืึท ืืึทืงืกืืืื.
ืคึผืึทืจืึทืืจืึทืฃ ืงืกื ืืืงืก- ืืืืขืจืืืจื ืฉืจืื 1 ืงืขืกืืืืขืจ.
ืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ, ืืจืืืึทื ืืื ืืึทืืคึผืกืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ:
1. ืื ืืขืื ืคืื ืืึทื ืึทืืืฉืขืจื ืืื ืขื ืืืฉืึทื ืืจื ืืื ืคึผืฉืื, ืคึผืจืืืืงืืึทืืึทื ืืื ืึธื ืืขืคืืื ืืื ืืขืืืงืืื. ืืืขืก ืืจืืื, ืืขืืขืจ ืืื ืคืืจื ืืืขื.
2. ืืขืจ ืงืื ื ืก ืืขืื ืืื ืืืื ื ืืฉื ืฉืืขืื - ืขืจ ืืื ืฉืืขื ืืืง ืืืืขืจ ืึทื ืขืจ ื ืึธืจ ืืึทืจืฃ ืฆื ืืืื ืืขืืืืืืง ืึท ืืืกื ืืื ืึทืืฅ ืืืขื ืึทืจืืขื ืืืืก. ืขืก ืืืขืจื ื ืืฉื ืืขืกืขืจ, ื ื, ืื ืืืขืื ืืื ืืืืืืฉืขืจืืืง, ืืื ืืขืจ ืืืืึทืืขืจ ืืขืื ืืืจ ืืืขื ืืืื ืืึทืืืืืง.
ืืจืืืึทื ืืื ืืึทืืคึผืก:
1. ืืืืขืจ ืึธืืขืจ ืฉืคึผืขืืขืจ, ืขืก ืืืขื ืืืื ืึท ืคืึทืกืืขืจ ืฉืคึผืืึทืืขืจ ืคืื ืึท ืขื ืืขื ืืื ืกื ืืืึธืก ืืืขื ืืึธื ืื ืืขืืืข ืืึทื, ืึธืืขืจ ืึท ืืืกื ืืฉืืคึผืขืจ. ืืื ืืืื ืืขืจ ืจืขืืืืืึทื ืืื ืื ืืขืืืข, ืืืึธืก ืฆืึธืื ืืขืจ. ืืืึธืก ืืืขื ืืืืืขืจ ืคืืจื ืฆื ืื ืืืกืึทืคึผืืจืึทื ืก ืคืื ืื ืคืืืขืจ.
2. ืขืก ืก ื ืืื ืข. ืืื ื ืืื ืข ืงืืื ืืื ืื ืืืึทืก ืืขืืืงืืื ืืื.
3. ืืื ืืื ืื ืคืจืืขืจืืืงืข ืืืขืจืกืืข, ืขืก ืืื ืงืืื ืึทื ืืืืืงืืื ื. ืึธืืขืจ ืคึฟืึทืจ ืึท ืื ืืฉืขื ืืจ, ืื ืืึทืื ืกืืื ืืื ืึทื, ื ืื ืขื ืืขื ืืขืจ ืขืจืฉืืขืจ ืึธืคึผืฆืืข, ืืืจ ืืึทืจืคึฟื ืฆื ืงืขืกืืืืขืจ ืืืฉืขื ืขืจืืื ืึทื ืืื. ืืื ืืึธืก ื ืขืื ืฆืืื. ืืืึธืก ืืืจ ืงืขื ืขื ืคืึทืจืืจืขื ืืขื ืคึฟืึทืจ ืื ื ืืฅ ืคืื ืืืื ืืื ืืขืืื ืืืื ืขืจ. ืืืืึทื ืืืจ ืงืขื ืขื ื ืืฉื ื ืขืืขื ืงืขืืจ ืคืื ืืื, ืงืืื ืืืื ืขืจ ืืื ืึท ืคืึทืจืฉืืืื ืืืขืื ืืืจ.
ืึธืคึผืฆืืข 3 - ืืืจ ืืึธื ื ืื ืืึทืจืคึฟื ืฆื ืืืืกืืจืึทืืื ืึท ืืืขืืึธืกืืคึผืขื, ืืืจ ื ืึธืจ ืืึทืจืคึฟื ืฆื ืงืืืคื ืขืก ืืื ืคืึธืจ ืขืก.
ืขืก ืืื ื ืืฉื ืคึฟืึทืจ ืืึธืจื ืืฉื ืึทื ืขื ืืืฉืึทื ืืจื ืคืื ืื ืืขืจืข ืงืึธืืคึผืึทื ืืขืก ืขืกื ืคึผืืฆืข ืืื ืืืจ (ืึธื, ืื ืืืื ืืขื ืคืื ืกื ืคืขืืขืจืืืจื ืืื ืื 90 ืก). ืืึธืืืจ ื ืืฆื ืืึธื ืืืึธืจืื ื ืกืืกืืขืืขื ืืืึธืก ืืขื ืขื ืืขืืืื, ืืืืึทืื ืืื ืืจืืขืื, ืืื ืืื ืึทืืืขืืืื, ื ืืฅ (ื ื, ืืื ืืื ืืกืืขืจ ืฆื ืืืืขืจ ืงืจืืืืืขืจื).
ืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ, ืืจืืืึทื ืืื ืืึทืืคึผืกืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ:
1. ืขืก ืืื ื ืื ืืึทืจืคึฟื ืฆื ืืืืกื ืฆืืื ืฆื ืงืืืขื ืึทืจืืืฃ ืืื ืขืคึผืขืก ืืืึธืก ืืื ืฉืืื ืื ืืืขื ืืึทื. ื ืขืืขื ืขืก ืืื ื ืืฆื ืขืก.
2. ืืึธื ืืืึธืจืื ื ืกืืกืืขืืขื ืืขื ืขื ื ืืฉื ืืขืฉืจืืื ืืืจื ืคืึธืึธืืก ืืื ืืื ืืขื ืขื, ืคืื ืงืืจืก, ื ืืฆืืง.
3. ืืจืืขืื ืืึธื ืืืึธืจืื ื ืกืืกืืขืืขื ืืืืฉืึทืืืึทืื ืฆืืฉืืขืื ื ืืฆืืง ืคืืืืขืจื ืืื ืคึฟืึธืจืืึทืฆืืข.
ืืจืืืึทื ืืื ืืึทืืคึผืก:
1. ืืขืจ ืื ืืฉืขื ืืจ ืืื ืืขื ืคืึทื ืืื ื ืืฉื ืึท ืื ืืฉืขื ืืจ, ืึธืืขืจ ื ืึธืจ ืึท ืืึทื ืืฆืขืจ ืคืื ืขืืขืฆืขืจ ืึทื ืืขืจืฉ ืก ืคึผืจืึธืืืงื. ืึธืืขืจ ืึท ืืึทื ืืฆืขืจ.
2. ืืขืจ ืงืื ื ืืื ืืืืขืจืฆืืืื ืืืขืจื ืคืื ืืขื ื ืืืืืืงืืื ืฆื ืงืืืคื ืขืคืขืก ืืืืก ืขืจ ืืืื, ืืืื ืืขืจืขืื, ื ืืฉื ืคืืจืฉืืืื, ืืื ืืืจืฃ ื ืืฉื, ืืื ืืืื ืืื ืืขืจ ืืืืืฉืขื ืคืืจ ืื ืืืจ ืืืฉืืขืืืื ืืขืืืืจื ืืื ืืืขื ืืื ื ืืฉื ืืืืฉื. ืืขืจื ืึธื ืืืจ ืืึทืจืคึฟื ืฆื ืึทืืึทืงืืื ืึท ืืึทืืื ืืขืจ ืืืื ืืื ืงืึทื ืคืืืืขืจ ืขืก ืคึฟืึทืจ ืึท ืกืคึผืขืฆืืคืืฉ ืกืืกืืขื. ืืขื ืข. ืขืจืฉืืขืจ ืืืจ ืืึทืจืคึฟื ืฆื ืืึทืฆืึธืื, ืืึทืฆืึธืื ืืื ืืึทืฆืึธืื ืืืืืขืจ. ืืื ืืขืจ ืงืื ื ืืื ืงืึทืจื. ืืืก ืืื ืื ืงืืึทื ืคืื ืืขื ืืขืื.
ืืืึธืก ืฆื ืืึธื - ืืฉืขืจื ืืฉืขืืืกืงื? ืืืื ืงืฉืื ืืื ืืืืขืจ ืืืืืืืง. (ืืื)
ืืื ืืขื ืืึทืืื ืืขืจ ืคืึทื ืืื ืื ืงืจืึทื ื ืกืืืืึทืฆืืข, ืืืจ ืงืขื ืขื ืืึธื ืืึธืก ืึท ืืืกื ืึทื ืืขืจืฉ - ืืึธืื ืืื ืื ืืึทืื ืืื ืืืขืจ ืืืืืขื ืข ืืึธื ืืืึธืจืื ื ืกืืกืืขื.
ื ื, ื ืื ืึท ืกืืกืืขื, ืคืื ืงืืจืก, ืืื ืื ืคืื ืืื ืขื ืคืื ืืขื ืืืึธืจื, ืืึธืก ืืื ืฆื ืืืื ืืื ืคึผืจืืกืืืคึผืืฉืืึทืก, ืึธืืขืจ ืืื ืืื ืืกืืขืจ ืขืคืขืก ืืึทืื ืืืื ืึทืจืืขื ืืจืื ืืขืจ ืืื ืงืืืึทืื ืืขืจ ืืื ืคึฟืึธืจืืึทืฆืืข ืฆื ืกืึธืืืืข ืคืึธืจืฉืืขืืื ื ืื ืกืึทืืึทื ืฅ. ืืื ืกืืจ ื ืืฉื ืฆื ืืขืคึฟืื ืขื ืืื ืืื ืึท ืกืืืืึทืฆืืข - "ืืืื ืืึธืจื, ืืื ืืึธื ื ืื ืืืืกื ืืื, ืืขืคึฟืื ืขื ืขืคึผืขืก, ืืื ืืึธื ื ืื ืืืืกื ืืืึธืก."
ืืืึธืก ืืขื ืขื ืื ืคึผืจืึธืก ืืื ืงืึธื ืก ืคืื ืืขื ืึธืคึผืฆืืข:
ืคึผืจืึธืก:
1. ืืึธืก ืืื ืืฉืืงืึทืืืข. ื ื, ืืื ืืื ืืกืืขืจ ืขืก ืืื ืืขืจ ืืฉืืงืึทืืืข ืืื ืื ืงืขืกืืืืขืจืืืง "ืืึทื ืฉืจืืืคึผื ืืึทืืึท ืืขืงืข, ืืืืฉื ืืืฉ ืคึผืืึทืฅ, ืขืืง."
2. ืืืก ืืขื ืขื ื ืืึทืข ืกืงืืื ืืื ื ืืึทืข ืึทื ืืืืืงืืื ื. ืืืึธืก, ืืืืขืจ ืึธืืขืจ ืฉืคึผืขืืขืจ, ืืืขื ืืขืื ืืืจ ืืขืืื ื-ืืืืขืจืืื ืืื ืืขืจืืจืขืึทื ืืื ืืึธืื ืึทืฅ.
ืงืึธื ืก:
1. ืืืจ ืืืขื ืืึธืื ืฆื ืึทืจืืขืื. ืืจืืืื ืฉืืืขืจ.
2. ืืืจ ืืืขื ืืึธืื ืฆื ืงืขืกืืืืขืจ ืืขืจืงืืขืจื ืื ืืืึทืืฉ ืืื ืคึผืจืึทืกืคึผืขืงืก ืคืื ืึทืืข ืึทืงืืืืืืืขืื.
3. ืขืคืขืก ืืืขื ืืขื ืืืจืคื ืืงืจืื ืืืื, ืืืืื ืื ืืืื ืฆืืืกืืข ืืืื ืืืืก ืืื ืคืืจืื ืคืืจ ืื ืืื ืืฉืขื ืืจ - ืฆืืื - ืืื ืืืืจืขื ืขืฆื ืืืจื ืื ืื ืืืืขืจืกืข.
4. ืื ืขืจืืกื ืืื ืืขืจืกื ืคึผืจืืงืจืข ืืึทื - ืืขืจ ืจืขืืืืืึทื ืงืขื ืืืื ืืืืฉืื ืืื "ื ืื ืึท ืืืื, ื ืืฉื ืึท ืืฉืึทืืข, ืึธืืขืจ ืึทื ืืืืืึทืงืึทื ื ืืืึทืข."
ืื ืืืืก ื ืขืืขื ื ืืฉื ืจืืืืงืืจื, ืืจืื ืงืขื ื ืืฉื ืฉืึทืืคึผืึทื ืืขืจ.
ืึทืืื - ืืขืจ ืฉืคึผืึทืก ืืืืื.
ืึทืืืขืืืื ืข ืืขืืึทื ืง - ืกืืขืืึทืืืฉ
(ืืืืืกืืจืืฆืืข ืืขื ืืืขื ืคืื ืืขื ืึทืจืืืงื ยซ")
ืืขืจืงืืขืจืื ื:
- ืืขืจ ื ืึธืจืืึทื PostgreSQL ืคืึทืจืืขื ืืขืจืื ื "pg_stat_statements" ืืื ืืื ืกืืึทืืืจื ืืื ืื ืฆืื ืืึทืืึทืืืืก.
- ืืื ืื ืืึธื ืืืึธืจืื ื ืืึทืืึทืืืืก, ืืืจ ืืึทืื ืึท ืืึทื ื ืคืื ืกืขืจืืืืก ืืืฉื ืคึฟืึทืจ ืกืืึธืจืื ื ืื ืืขืฉืืืืข ืคืื โโโโpg_stat_statements ืืื ืืขืจ ืขืจืฉื ืืื ืข ืืื ืคึฟืึทืจ ืืึทืฉืืขืืืงื ืืขืืจืืงืก ืืื ืืึธื ืืืึธืจืื ื ืืื ืืขืจ ืฆืืงืื ืคึฟื.
- ืืืืฃ ืื ืืึธื ืืืึธืจืื ื ืืึทืืขืืึธืก, ืืืจ ืืึทืื ืึท ืกืืื ืคืื ืืึทืฉ ืกืงืจืืคึผืก, ืึทืจืืึทื ืืขืจืขืื ื ืื ืคึฟืึทืจ ืืืฉืขื ืขืจืืืืื ื ืื ืกืึทืืึทื ืฅ ืืื ืื ืืืืขื ืกืืกืืขื.
ืกืขืจืืืืก ืืืฉื
ืขืจืฉืืขืจ, ืึท ืกืืขืืึทืืืฉ ืกืืืคึผืืึทืคืืื ERD, ืืืึธืก ืืขืืจืืคื ืืื ืื ืกืืฃ:
ืงืืจืฅ ืืึทืฉืจืืึทืืื ื ืคืื ืืืฉืืขื ืืคึผืืื ื - ืืึทืืขืืึธืก, ืคืื ื ืคืื ืงืฉืจ ืฆื ืืขื ืืืึทืฉืคึผืื
ืืึทืืึทืืืืก - ืืืืืึทืืืืก ืคึผืึทืจืึทืืขืืขืจืก
pg_stat_history - ืึท ืืืกืืืจืืฉืข ืืืฉ ืคึฟืึทืจ ืกืืึธืจืื ื ืฆืืึทืืืืืึทืืืง ืกื ืึทืคึผืฉืึทืฅ ืคืื ืื pg_stat_statements ืืืื ืื ื ืคืื ืื ืฆืื ืืึทืืึทืืืืก
ืืขืืจืืง_ืืืึธืกืึทืจ - ืืืขืจืืขืจืืื ืคืื ืคืึธืจืฉืืขืืื ื ืืขืืจืืงืก
metric_config - ืงืึทื ืคืืืืขืจืืืฉืึทื ืคืื ืืืื ืืขืืจืืงืก
ืืขืืจืืง - ืึท ืกืคึผืขืฆืืคืืฉ ืืขืืจืืง ืคึฟืึทืจ ืื ืืขืื ืืืึธืก ืืื ืืึธื ืืืึธืจืขื
metric_alert_history - ืืขืฉืืืืข ืคืื โโืคืึธืจืฉืืขืืื ื ืืืึธืจื ืื ืื
log_query - ืึท ืกืขืจืืืืก ืืืฉ ืคึฟืึทืจ ืกืืึธืจืื ื ืคึผืึทืจืกืขื ืจืขืงืึธืจืืก ืคึฟืื ืึท ืคึผืึธืกืืืจืขืกืงื ืืึธื ืืขืงืข ืืึทืื ืืึธืืืื ืคึฟืื AWS
baseline - ืคึผืึทืจืึทืืขืืขืจืก ืคืื ืื ืฆืืื ืคึผืืจืืึทืื ืืขื ืืฆื ืืื ืื ืืึทืืข
ืืฉืขืงืคึผืืื ื - ืงืึทื ืคืืืืขืจืืืฉืึทื ืคืื ืืขืืจืืงืก ืคึฟืึทืจ ืงืึธื ืืจืึธืืืจืื ื ืื ืกืืึทืืืก ืคืื ืื ืืึทืืึทืืืืก
checkpoint_alert_history - ืืืืจืขื ืื ื ืืขืฉืืืืข ืคืื โโืืึทืืึทืืืืก ืืขืืื ื ืืฉืขืง ืืขืืจืืงืก
pg_stat_db_queries - ืืื ืกื ืืืฉ ืคืื ืึทืงืืืื ืจืืงืืืขืก
ืึทืงืืืืืืื_ืืึธื - ืืขืืืงืืื ืงืืึธืฅ ืืื ืกื ืืืฉ
trap_oid - ืืจืึทืคึผ ืงืึทื ืคืืืืขืจืืืฉืึทื ืืื ืกื ืืืฉ
ืกืืึทืืข 1 - ืงืืืึทืื ืกืืึทืืืกืืืฉ ืืื ืคึฟืึธืจืืึทืฆืืข ืืืขืื ืคืึธืจืฉืืขืืื ื ืืื ืืึทืงืืืขื ืจืืคึผืึธืจืฅ
ื ืืืฉ ืืื ืืขื ืืฆื ืฆื ืงืจืึธื ืกืืึทืืืกืืืฉ ืืื ืคึฟืึธืจืืึทืฆืืข pg_stat_history
ืคึผื_ืกืืึทื_ืืืกืืึธืจื ืืืฉ ืกืืจืืงืืืจ
ืืืฉ "public.pg_stat_history" ืืืึทื | ืืืคึผ | ืืึธืืืคืืขืจืก---------------------- -+------------------------------------------------ ืฉืืึทื | ืืึทื ืฅ ื ืืืขืจ | ื ืื ื ืึทื ืคืขืืืงืืึทื Nextval ('pg_stat_history_id_seq'::regclass) snapshot_timestamp | ืฆืืื ืฉืืขืืคึผื ืึธื ืฆืืื ืืึธื ืข | database_id | ืืึทื ืฅ ื ืืืขืจ | ืืืื | oid | userid | oid | queryid | bigint | ืึธื ืคึฟืจืขื | ืืขืงืกื | ืจืืคื | bigint | total_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | min_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | max_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | mean_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | stddev_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | ืจืึธืื | bigint | shared_blks_hit | bigint | shared_blks_read | bigint | shared_blks_dirtied | bigint | shared_blks_written | bigint | local_blks_hit | bigint | local_blks_read | bigint | local_blks_dirtied | bigint | local_blks_written | bigint | temp_blks_read | bigint | temp_blks_written | bigint | blk_read_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | blk_write_time | ืืึธืคึผื ืคึผืื ืืืขืืงืืึทื | baseline_id | ืืึทื ืฅ ื ืืืขืจ | ืื ืืขืงืกืื: "pg_stat_history_pkey" ืขืจืฉืืืง ืฉืืืกื, btree (id) "ืืึทืืึทืืืืก_ืืืงืก" btree (ืืึทืืึทืืืืก_ืื) "queryid_idx" btree (queryid) "Snapshot_timestamp_idx" btree (snapshot_timestamp) ืคืจืขืื ืฉืืืกื ืงืึทื ืกืืจืืื ืฅ: "ืืึทืืึทืืึทืกืข_ืื_ื_ืคืขืืก" (ืืึทืืึทืืึทืกืข_ืื_ืคืืึทืง) ) ืืืืฃ ืืืกืืขืงื ืงืึทืกืงืืื
ืืื ืืืจ ืงืขื ืขื ืืขื, ืื ืืืฉ ืืื ืืืืื ืื ืงืืืืืึทืืึทืืืื ืืืื ืื ื ืืึทืื pg_stat_statements ืืื ืื ืฆืื ืืึทืืึทืืืืก.
ื ืืฆื ืืขื ืืืฉ ืืื ืืืืขืจ ืคึผืฉืื
pg_stat_history ืืืขื ืคืึธืจืฉืืขืื ืึทืงืืืืืึทืืืืืื ืกืืึทืืืกืืืง ืคืื ืึธื ืคึฟืจืขื ืืืจืืคืืจืื ื ืคึฟืึทืจ ืืขืืขืจ ืฉืขื. ืืื ืื ืึธื ืืืื ืคืื ืืขืืขืจ ืฉืขื, ื ืึธื ืคืืืื ื ืื ืืืฉ, ืกืืึทืืืกืืืง pg_stat_statements ืืึทืฉืืขืืืง ืืื pg_stat_statements_reset().
ืืึทืืขืจืงืื ื: ืกืืึทืืืกืืืง ืืขื ืขื ืืขืืืืื ืคึฟืึทืจ ืงืืืืจืื ืืื ืืืจืืคืืจืื ื ืืขืืืืขืจ ืคืื ืืขืจ ืืื 1 ืกืขืงืื ืืข.
ืคึผืึธืคึผืืืืืืื ื ืื pg_stat_history ืืืฉ
--pg_stat_history.sql
CREATE OR REPLACE FUNCTION pg_stat_history( ) RETURNS boolean AS $$
DECLARE
endpoint_rec record ;
database_rec record ;
pg_stat_snapshot record ;
current_snapshot_timestamp timestamp without time zone;
BEGIN
current_snapshot_timestamp = date_trunc('minute',now());
FOR endpoint_rec IN SELECT * FROM endpoint
LOOP
FOR database_rec IN SELECT * FROM database WHERE endpoint_id = endpoint_rec.id
LOOP
RAISE NOTICE 'NEW SHAPSHOT IS CREATING';
--Connect to the target DB
EXECUTE 'SELECT dblink_connect(''LINK1'',''host='||endpoint_rec.host||' dbname='||database_rec.name||' user=USER password=PASSWORD '')';
RAISE NOTICE 'host % and dbname % ',endpoint_rec.host,database_rec.name;
RAISE NOTICE 'Creating snapshot of pg_stat_statements for database %',database_rec.name;
SELECT
*
INTO
pg_stat_snapshot
FROM dblink('LINK1',
'SELECT
dbid , SUM(calls),SUM(total_time),SUM(rows) ,SUM(shared_blks_hit) ,SUM(shared_blks_read) ,SUM(shared_blks_dirtied) ,SUM(shared_blks_written) ,
SUM(local_blks_hit) , SUM(local_blks_read) , SUM(local_blks_dirtied) , SUM(local_blks_written) , SUM(temp_blks_read) , SUM(temp_blks_written) , SUM(blk_read_time) , SUM(blk_write_time)
FROM pg_stat_statements WHERE dbid=(SELECT oid from pg_database where datname=current_database() )
GROUP BY dbid
'
)
AS t
( dbid oid , calls bigint ,
total_time double precision ,
rows bigint , shared_blks_hit bigint , shared_blks_read bigint ,shared_blks_dirtied bigint ,shared_blks_written bigint ,
local_blks_hit bigint ,local_blks_read bigint , local_blks_dirtied bigint ,local_blks_written bigint ,
temp_blks_read bigint ,temp_blks_written bigint ,
blk_read_time double precision , blk_write_time double precision
);
INSERT INTO pg_stat_history
(
snapshot_timestamp ,database_id ,
dbid , calls ,total_time ,
rows ,shared_blks_hit ,shared_blks_read ,shared_blks_dirtied ,shared_blks_written ,local_blks_hit ,
local_blks_read,local_blks_dirtied,local_blks_written,temp_blks_read,temp_blks_written,
blk_read_time, blk_write_time
)
VALUES
(
current_snapshot_timestamp ,
database_rec.id ,
pg_stat_snapshot.dbid ,pg_stat_snapshot.calls,
pg_stat_snapshot.total_time,
pg_stat_snapshot.rows ,pg_stat_snapshot.shared_blks_hit ,pg_stat_snapshot.shared_blks_read ,pg_stat_snapshot.shared_blks_dirtied ,pg_stat_snapshot.shared_blks_written ,
pg_stat_snapshot.local_blks_hit , pg_stat_snapshot.local_blks_read , pg_stat_snapshot.local_blks_dirtied , pg_stat_snapshot.local_blks_written ,
pg_stat_snapshot.temp_blks_read , pg_stat_snapshot.temp_blks_written , pg_stat_snapshot.blk_read_time , pg_stat_snapshot.blk_write_time
);
RAISE NOTICE 'Creating snapshot of pg_stat_statements for queries with min_time more than 1000ms';
FOR pg_stat_snapshot IN
--All queries with max_time greater than 1000 ms
SELECT
*
FROM dblink('LINK1',
'SELECT
dbid , userid ,queryid,query,calls,total_time,min_time ,max_time,mean_time, stddev_time ,rows ,shared_blks_hit ,
shared_blks_read ,shared_blks_dirtied ,shared_blks_written ,
local_blks_hit , local_blks_read , local_blks_dirtied ,
local_blks_written , temp_blks_read , temp_blks_written , blk_read_time ,
blk_write_time
FROM pg_stat_statements
WHERE dbid=(SELECT oid from pg_database where datname=current_database() AND min_time >= 1000 )
'
)
AS t
( dbid oid , userid oid , queryid bigint ,query text , calls bigint ,
total_time double precision ,min_time double precision ,max_time double precision , mean_time double precision , stddev_time double precision ,
rows bigint , shared_blks_hit bigint , shared_blks_read bigint ,shared_blks_dirtied bigint ,shared_blks_written bigint ,
local_blks_hit bigint ,local_blks_read bigint , local_blks_dirtied bigint ,local_blks_written bigint ,
temp_blks_read bigint ,temp_blks_written bigint ,
blk_read_time double precision , blk_write_time double precision
)
LOOP
INSERT INTO pg_stat_history
(
snapshot_timestamp ,database_id ,
dbid ,userid , queryid , query , calls ,total_time ,min_time ,max_time ,mean_time ,stddev_time ,
rows ,shared_blks_hit ,shared_blks_read ,shared_blks_dirtied ,shared_blks_written ,local_blks_hit ,
local_blks_read,local_blks_dirtied,local_blks_written,temp_blks_read,temp_blks_written,
blk_read_time, blk_write_time
)
VALUES
(
current_snapshot_timestamp ,
database_rec.id ,
pg_stat_snapshot.dbid ,pg_stat_snapshot.userid ,pg_stat_snapshot.queryid,pg_stat_snapshot.query,pg_stat_snapshot.calls,
pg_stat_snapshot.total_time,pg_stat_snapshot.min_time ,pg_stat_snapshot.max_time,pg_stat_snapshot.mean_time, pg_stat_snapshot.stddev_time ,
pg_stat_snapshot.rows ,pg_stat_snapshot.shared_blks_hit ,pg_stat_snapshot.shared_blks_read ,pg_stat_snapshot.shared_blks_dirtied ,pg_stat_snapshot.shared_blks_written ,
pg_stat_snapshot.local_blks_hit , pg_stat_snapshot.local_blks_read , pg_stat_snapshot.local_blks_dirtied , pg_stat_snapshot.local_blks_written ,
pg_stat_snapshot.temp_blks_read , pg_stat_snapshot.temp_blks_written , pg_stat_snapshot.blk_read_time , pg_stat_snapshot.blk_write_time
);
END LOOP;
PERFORM dblink_disconnect('LINK1');
END LOOP ;--FOR database_rec IN SELECT * FROM database WHERE endpoint_id = endpoint_rec.id
END LOOP;
RETURN TRUE;
END
$$ LANGUAGE plpgsql;ืืื ืึท ืจืขืืืืืึทื, ื ืึธื ืขืืืขืืข ืฆืืื ืืื ืื ืืืฉ pg_stat_history ืืืจ ืืืขืื ืืึธืื ืึท ืืึทื ื ืคืื ืกื ืึทืคึผืฉืึทืฅ ืคืื ืื ืืื ืืึทืื ืคืื ืื ืืืฉ pg_stat_statements ืฆืื ืืึทืืึทืืืืก.
ืคืืงืืืฉ ืจืืคึผืึธืจืืื ื
ื ืืฆื ืคึผืฉืื ืงืืืืจืื, ืืืจ ืงืขื ืขื ืืึทืงืืืขื ืืึทื ืฅ ื ืืฆืืง ืืื ืืฉืืงืึทืืืข ืจืืคึผืึธืจืฅ.
ืึทืืืจืขืืึทืืขื ืืึทืื ืคึฟืึทืจ ืึท ืืขืืขืื ืฆืืื
ืืขืื
SELECT
database_id ,
SUM(calls) AS calls ,SUM(total_time) AS total_time ,
SUM(rows) AS rows , SUM(shared_blks_hit) AS shared_blks_hit,
SUM(shared_blks_read) AS shared_blks_read ,
SUM(shared_blks_dirtied) AS shared_blks_dirtied,
SUM(shared_blks_written) AS shared_blks_written ,
SUM(local_blks_hit) AS local_blks_hit ,
SUM(local_blks_read) AS local_blks_read ,
SUM(local_blks_dirtied) AS local_blks_dirtied ,
SUM(local_blks_written) AS local_blks_written,
SUM(temp_blks_read) AS temp_blks_read,
SUM(temp_blks_written) temp_blks_written ,
SUM(blk_read_time) AS blk_read_time ,
SUM(blk_write_time) AS blk_write_time
FROM
pg_stat_history
WHERE
queryid IS NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY database_id ;ืื ืฆืืื
to_char (ืืขืืึทืืขื '1 ืืืืืกืขืงืึทื ื' * pg_total_stat_history_rec.total_time, 'HH24:MI:SS.MS')
ืืื / ืึธ ืฆืืื
to_char (ืืขืืึทืืขื '1 ืืืืืกืขืงืึทื ื' * (pg_total_stat_history_rec.blk_read_time + pg_total_stat_history_rec.blk_write_time), 'HH24:MI:SS.MS')
TOP10 SQL ืืืจื total_time
ืืขืื
SELECT
queryid ,
SUM(calls) AS calls ,
SUM(total_time) AS total_time
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY queryid
ORDER BY 3 DESC
LIMIT 10------------------------------------------ ---------------------------------- | TOP10 SQL ืืืื ืืึทื ืฅ ืืืจืืคืืจืื ื ืฆืืื | #| queryid| ืจืืคื| ืจืืคื ืืื total_time (ms) | ืืืืืื % +---------------------------+ ------ --------------------------+---------- | 1| 821760255| 2| .00001|00:03:23.141( 203141.681 ืืื.)| 5.42 | 2| 4152624390| 2| .00001|00:03:13.929( 193929.215 ืืื.)| 5.17 | 3| 1484454471| 4| .00001|00:02:09.129( 129129.057 ืืื.)| 3.44 | 4| 655729273| 1| .00000|00:02:01.869( 121869.981 ืืื.)| 3.25 | 5| 2460318461| 1| .00000|00:01:33.113( 93113.835 ืืื)| 2.48 | 6| 2194493487| 4| .00001|00:00:17.377( 17377.868 ืืื)| .46 | 7| 1053044345| 1| .00000|00:00:06.156( 6156.352 ืืื.)| .16 | 8| 3644780286| 1| .00000|00:00:01.063( 1063.830 ืืื)| .03
TOP10 SQL ืืืื ืืึทื ืฅ ื / ืึธ ืฆืืื
ืืขืื
SELECT
queryid ,
SUM(calls) AS calls ,
SUM(blk_read_time + blk_write_time) AS io_time
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY queryid
ORDER BY 3 DESC
LIMIT 10------------------------------------------ -------------------------------------------- | TOP10 SQL ืืืื ืืึทื ืฅ ื / ืึธ ืฆืืื | #| queryid| ืจืืคื| ืจืืคื ืืื I/O ืฆืืื (ืืก)|ืื I/O ืฆืืื % +----+-------+------------- ----------+--------------------------------+---- ------ -- | 1| 4152624390| 2| .00001|00:08:31.616( 511616.592 ืืื.)| 31.06 | 2| 821760255| 2| .00001|00:08:27.099( 507099.036 ืืื.)| 30.78 | 3| 655729273| 1| .00000|00:05:02.209( 302209.137 ืืื.)| 18.35 | 4| 2460318461| 1| .00000|00:04:05.981( 245981.117 ืืื.)| 14.93 | 5| 1484454471| 4| .00001|00:00:39.144( 39144.221 ืืื.)| 2.38 | 6| 2194493487| 4| .00001|00:00:18.182( 18182.816 ืืื.)| 1.10 | 7| 1053044345| 1| .00000|00:00:16.611( 16611.722 ืืื.)| 1.01 | 8| 3644780286| 1| .00000|00:00:00.436(436.205 ืืื)| .03
TOP10 SQL ืืืื ืื ืืึทืงืกืืืื ืฆืืื ืคืื ืืืจืืคืืจืื ื
ืืขืื
SELECT
id AS snapshotid ,
queryid ,
snapshot_timestamp ,
max_time
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
ORDER BY 4 DESC
LIMIT 10------------------------------------------ -------------------------------------------- | TOP10 SQL ืืืจื ืืึทืงืกืืืื ืืืจืืคืืจืื ื ืฆืืื | #| ืืึธืืขื ืืืืื| snapshotID| queryid| ืืึทืงืก_ืฆืืื (ืืก) +----+-------------------+-----+--- --+---------------------------------------------- | 1| 05.04.2019/01/03 4169:655729273| 00| 02| 01.869:121869.981:2( 04.04.2019 ืืื) | 17| 00/4153/821760255 00:01| 41.570| 101570.841| 3:04.04.2019:16( 00 ืืื) | 4146| 821760255/00/01 41.570:101570.841| 4| 04.04.2019| 16:00:4144( 4152624390 ืืื) | 00| 01/36.964/96964.607 5:04.04.2019| 17| 00| 4151:4152624390:00(01 ืืื) | 36.964| 96964.607/6/05.04.2019 10:00| 4188| 1484454471| 00:01:33.452(93452.150 ืืื) | 7| 04.04.2019/17/00 4150:2460318461| 00| 01| 33.113:93113.835:8( 04.04.2019 ืืื) | 15| 00/4140/1484454471 00:00| 11.892| 11892.302| 9:04.04.2019:16(00 ืืื) | 4145| 1484454471/00/00 11.892:11892.302| 10| 04.04.2019| 17:00:4152( 1484454471 ืืื) | 00| 00/11.892/11892.302 XNUMX:XNUMX| XNUMX| XNUMX| XNUMX:XNUMX:XNUMX( XNUMX ืืื) | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX:XNUMX:XNUMX(XNUMX ืืื.)
TOP10 SQL ืืืจื ืฉืขืจื ืืึทืคืขืจ ืืืืขื ืขื / ืฉืจืืึทืื
ืืขืื
SELECT
id AS snapshotid ,
queryid ,
snapshot_timestamp ,
shared_blks_read ,
shared_blks_written
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT AND
( shared_blks_read > 0 OR shared_blks_written > 0 )
ORDER BY 4 DESC , 5 DESC
LIMIT 10------------------------------------------ ------------------------------------------ | TOP10 SQL ืืืจื ืฉืขืจื ืืึทืคืขืจ ืืืืขื ืขื / ืฉืจืืึทืื | #| ืืึธืืขื ืืืืื| snapshotID| queryid| ืฉืขืจื ืืืึทืงืก ืืืืขื ืขื| ืฉืขืจื ืืืึทืงืก ืฉืจืืึทืื +----+-------------------+--------+-------- -+---------------------+--------------------- | 1| 04.04.2019/17/00 4153:821760255| 797308| 0| 2| 04.04.2019 | 16| 00/4146/821760255 797308:0| 3| 05.04.2019| 01| 03 | 4169| 655729273/797158/0 4:04.04.2019| 16| 00| 4144| 4152624390 | 756514| 0/5/04.04.2019 17:00| 4151| 4152624390| 756514| 0 | 6| 04.04.2019/17/00 4150:2460318461| 734117| 0| 7| 04.04.2019 | 17| 00/4155/3644780286 52973:0| 8| 05.04.2019| 01| 03 | 4168| 1053044345/52818/0 9:04.04.2019| 15| 00| 4141| 2194493487 | 52813| 0/10/04.04.2019 16:00| 4147| 2194493487| 52813| 0 | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX| XNUMX | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX| XNUMX -------------------------------------------------- ------------------------------------------
ืืืกืืึธืืจืึทื ืคืื ืจืืงืืืขืก ืคืึทืจืฉืคึผืจืืืืื ื ืืืจื ืืึทืงืกืืืื ืืืจืืคืืจืื ื ืฆืืื
ืจืืงืืืขืก
SELECT
MIN(max_time) AS hist_min ,
MAX(max_time) AS hist_max ,
(( MAX(max_time) - MIN(min_time) ) / hist_columns ) as hist_width
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT ;
SELECT
SUM(calls) AS calls
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id =DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT AND
( max_time >= hist_current_min AND max_time < hist_current_max ) ;
|------------------------------------------------ -------------------------------------------------- | MAX_TIME HISTOGRAM | ืืึทื ืฅ ืงืึทืืืก: 33851920 | ืืื ืฆืืื: 00:00:01.063 | ืืึทืงืกืืืื ืฆืืื: 00:02:01.869 ------------------------------------------ -------------------------------------------- | ืืื ืืขืืืืขืจ| ืืึทืงืกืืืื ืืขืืืืขืจ| ืจืืคื +--------------------------------+------- ----------------------+---------- | 00:00:01.063( 1063.830 ืืื) | 00:00:13.144( 13144.445 ืืื) | 9 | 00:00:13.144( 13144.445 ืืื) | 00:00:25.225( 25225.060 ืืื) | 0 | 00:00:25.225( 25225.060 ืืื) | 00:00:37.305( 37305.675 ืืื) | 0 | 00:00:37.305( 37305.675 ืืื) | 00:00:49.386(49386.290 ืืื) | 0 | 00:00:49.386(49386.290 ืืื) | 00:01:01.466(61466.906 ืืื) | 0 | 00:01:01.466(61466.906 ืืื) | 00:01:13.547( 73547.521 ืืื) | 0 | 00:01:13.547( 73547.521 ืืื) | 00:01:25.628( 85628.136 ืืื) | 0 | 00:01:25.628( 85628.136 ืืื) | 00:01:37.708( 97708.751 ืืื) | 4 | 00:01:37.708( 97708.751 ืืื) | 00:01:49.789( 109789.366 ืืื) | 2 | 00:01:49.789( 109789.366 ืืื) | 00:02:01.869( 121869.981 ืืื) | 0
TOP10 ืกื ืึทืคึผืฉืึทืฅ ืืืจื ืึธื ืคึฟืจืขื ืคึผืขืจ ืกืขืงืื ืืข
ืจืืงืืืขืก
--pg_qps.sql
--Calculate Query Per Second
CREATE OR REPLACE FUNCTION pg_qps( pg_stat_history_id integer ) RETURNS double precision AS $$
DECLARE
pg_stat_history_rec record ;
prev_pg_stat_history_id integer ;
prev_pg_stat_history_rec record;
total_seconds double precision ;
result double precision;
BEGIN
result = 0 ;
SELECT *
INTO pg_stat_history_rec
FROM
pg_stat_history
WHERE id = pg_stat_history_id ;
IF pg_stat_history_rec.snapshot_timestamp IS NULL
THEN
RAISE EXCEPTION 'ERROR - Not found pg_stat_history for id = %',pg_stat_history_id;
END IF ;
--RAISE NOTICE 'pg_stat_history_id = % , snapshot_timestamp = %', pg_stat_history_id ,
pg_stat_history_rec.snapshot_timestamp ;
SELECT
MAX(id)
INTO
prev_pg_stat_history_id
FROM
pg_stat_history
WHERE
database_id = pg_stat_history_rec.database_id AND
queryid IS NULL AND
id < pg_stat_history_rec.id ;
IF prev_pg_stat_history_id IS NULL
THEN
RAISE NOTICE 'Not found previous pg_stat_history shapshot for id = %',pg_stat_history_id;
RETURN NULL ;
END IF;
SELECT *
INTO prev_pg_stat_history_rec
FROM
pg_stat_history
WHERE id = prev_pg_stat_history_id ;
--RAISE NOTICE 'prev_pg_stat_history_id = % , prev_snapshot_timestamp = %', prev_pg_stat_history_id , prev_pg_stat_history_rec.snapshot_timestamp ;
total_seconds = extract(epoch from ( pg_stat_history_rec.snapshot_timestamp - prev_pg_stat_history_rec.snapshot_timestamp ));
--RAISE NOTICE 'total_seconds = % ', total_seconds ;
--RAISE NOTICE 'calls = % ', pg_stat_history_rec.calls ;
IF total_seconds > 0
THEN
result = pg_stat_history_rec.calls / total_seconds ;
ELSE
result = 0 ;
END IF;
RETURN result ;
END
$$ LANGUAGE plpgsql;
SELECT
id ,
snapshot_timestamp ,
calls ,
total_time ,
( select pg_qps( id )) AS QPS ,
blk_read_time ,
blk_write_time
FROM
pg_stat_history
WHERE
queryid IS NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT AND
( select pg_qps( id )) IS NOT NULL
ORDER BY 5 DESC
LIMIT 10
|------------------------------------------------ -------------------------------------------------- | TOP10 ืกื ืึทืคึผืฉืึทืฅ ืึธืจืืขืจื ืืืจื QueryPerSeconds ื ืืืขืจื -------------------------------------------- ------------------------------------------ -------------------------------------------------- | #| ืืึธืืขื ืืืืื| snapshotID| ืจืืคื| ืืึทื ืฅ ืืืืืืข| QPS| I/O ืฆืืื| I/O ืฆืืื % +----+---------------------+--------+------- ----+---------------------------------+---------- -+------------------------+---------------- | 1| 04.04.2019/20/04 4161:5758631| 00| 06| 30.513:390513.926:1573.396( 00 ืืื)| 00| 01.470:1470.110:376( 2 ืืื)| .04.04.2019 | 17| 00/4149/3529197 00:11| 48.830| 708830.618| 980.332:00:12( 47.834 ืืื)| 767834.052| 108.324:3:04.04.2019(16 ืืื)| 00 | 4143| 3525360/00/10 13.492:613492.351| 979.267| 00| 08:41.396:521396.555( 84.988 ืืื)| 4| 04.04.2019:21:03(4163 ืืื)| 2781536 | 00| 03/06.470/186470.979 785.745:00| 00| 00.249| 249.865:134:5( 04.04.2019 ืืื)| 19| 03:4159:2890362(00 ืืื)| .03 | 16.784| 196784.755/776.979/00 00:01.441| 1441.386| 732| 6:04.04.2019:14( 00 ืืื)| 4137| 2397326:00:04( 43.033 ืืื)| .283033.854 | 665.924| 00/00/00.024 24.505:009| 7| 04.04.2019| 15:00:4139(2394416 ืืื)| 00| 04:51.435:291435.010(665.116 ืืื)| .00 | 00| 12.025/12025.895/4.126 8:04.04.2019| 13| 00| 4135:2373043:00( 04 ืืื)| 26.791| 266791.988:659.179:00( 00 ืืื)| 00.064 | 64.261| 024/9/05.04.2019 01:03| 4167| 4387191| 00:06:51.380(411380.293 ืืื)| 609.332| 00:05:18.847( 318847.407 ืืื)| .77.507 | 10| 04.04.2019/18/01 4157:1145596| 00| 01| 19.217:79217.372:313.004( 00 ืืื)| 00| 01.319:1319.676:1.666( XNUMX ืืื)| XNUMX | XNUMX| XNUMX/XNUMX/XNUMX XNUMX:XNUMX| XNUMX| XNUMX| XNUMX:XNUMX:XNUMX( XNUMX ืืื)| XNUMX| XNUMX:XNUMX:XNUMX( XNUMX ืืื)| XNUMX
ืึทืืจืื ืืืจืืคืืจืื ื ืืขืฉืืืืข ืืื QueryPerSeconds ืืื I/O ืฆืืื
ืืขืื
SELECT
id ,
snapshot_timestamp ,
calls ,
total_time ,
( select pg_qps( id )) AS QPS ,
blk_read_time ,
blk_write_time
FROM
pg_stat_history
WHERE
queryid IS NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
ORDER BY 2
|----------------------------------------------------------------------------------------------- | HOURLY EXECUTION HISTORY WITH QueryPerSeconds and I/O Time ----------------------------------------------------------------------------------------------------------------------------------------------- | QUERY PER SECOND HISTORY | #| snapshot| snapshotID| calls| total dbtime| QPS| I/O time| I/O time % +-----+------------------+-----------+-----------+----------------------------------+-----------+----------------------------------+----------- | 1| 04.04.2019 11:00| 4131| 3747| 00:00:00.835( 835.374 ms.)| 1.041| 00:00:00.000( .000 ms.)| .000 | 2| 04.04.2019 12:00| 4133| 1002722| 00:01:52.419( 112419.376 ms.)| 278.534| 00:00:00.149( 149.105 ms.)| .133 | 3| 04.04.2019 13:00| 4135| 2373043| 00:04:26.791( 266791.988 ms.)| 659.179| 00:00:00.064( 64.261 ms.)| .024 | 4| 04.04.2019 14:00| 4137| 2397326| 00:04:43.033( 283033.854 ms.)| 665.924| 00:00:00.024( 24.505 ms.)| .009 | 5| 04.04.2019 15:00| 4139| 2394416| 00:04:51.435( 291435.010 ms.)| 665.116| 00:00:12.025( 12025.895 ms.)| 4.126 | 6| 04.04.2019 16:00| 4143| 3525360| 00:10:13.492( 613492.351 ms.)| 979.267| 00:08:41.396( 521396.555 ms.)| 84.988 | 7| 04.04.2019 17:00| 4149| 3529197| 00:11:48.830( 708830.618 ms.)| 980.332| 00:12:47.834( 767834.052 ms.)| 108.324 | 8| 04.04.2019 18:01| 4157| 1145596| 00:01:19.217( 79217.372 ms.)| 313.004| 00:00:01.319( 1319.676 ms.)| 1.666 | 9| 04.04.2019 19:03| 4159| 2890362| 00:03:16.784( 196784.755 ms.)| 776.979| 00:00:01.441( 1441.386 ms.)| .732 | 10| 04.04.2019 20:04| 4161| 5758631| 00:06:30.513( 390513.926 ms.)| 1573.396| 00:00:01.470( 1470.110 ms.)| .376 | 11| 04.04.2019 21:03| 4163| 2781536| 00:03:06.470( 186470.979 ms.)| 785.745| 00:00:00.249( 249.865 ms.)| .134 | 12| 04.04.2019 23:03| 4165| 1443155| 00:01:34.467( 94467.539 ms.)| 200.438| 00:00:00.015( 15.287 ms.)| .016 | 13| 05.04.2019 01:03| 4167| 4387191| 00:06:51.380( 411380.293 ms.)| 609.332| 00:05:18.847( 318847.407 ms.)| 77.507 | 14| 05.04.2019 02:03| 4171| 189852| 00:00:10.989( 10989.899 ms.)| 52.737| 00:00:00.539( 539.110 ms.)| 4.906 | 15| 05.04.2019 03:01| 4173| 3627| 00:00:00.103( 103.000 ms.)| 1.042| 00:00:00.004( 4.131 ms.)| 4.010 | 16| 05.04.2019 04:00| 4175| 3627| 00:00:00.085( 85.235 ms.)| 1.025| 00:00:00.003( 3.811 ms.)| 4.471 | 17| 05.04.2019 05:00| 4177| 3747| 00:00:00.849( 849.454 ms.)| 1.041| 00:00:00.006( 6.124 ms.)| .721 | 18| 05.04.2019 06:00| 4179| 3747| 00:00:00.849( 849.561 ms.)| 1.041| 00:00:00.000( .051 ms.)| .006 | 19| 05.04.2019 07:00| 4181| 3747| 00:00:00.839( 839.416 ms.)| 1.041| 00:00:00.000( .062 ms.)| .007 | 20| 05.04.2019 08:00| 4183| 3747| 00:00:00.846( 846.382 ms.)| 1.041| 00:00:00.000( .007 ms.)| .001 | 21| 05.04.2019 09:00| 4185| 3747| 00:00:00.855( 855.426 ms.)| 1.041| 00:00:00.000( .065 ms.)| .008 | 22| 05.04.2019 10:00| 4187| 3797| 00:01:40.150( 100150.165 ms.)| 1.055| 00:00:21.845( 21845.217 ms.)| 21.812
ืืขืงืกื ืคืื ืึทืืข ืกืงื-ืกืึทืืขืงืฅ
ืืขืื
SELECT
queryid ,
query
FROM
pg_stat_history
WHERE
queryid IS NOT NULL AND
database_id = DATABASE_ID AND
snapshot_timestamp BETWEEN BEGIN_TIMEPOINT AND END_TIMEPOINT
GROUP BY queryid , query
ืืึทื ืฅ
ืืื ืืืจ ืงืขื ืขื ืืขื, ืืื ืึท ืคึผืฉืื ืืืื, ืืืจ ืงืขื ืขื ืืึทืงืืืขื ืึท ืคึผืืึทืฅ ืคืื ื ืืฆืืง ืืื ืคึฟืึธืจืืึทืฆืืข ืืืขืื ืื ืืืขืจืงืืึธืื ืืื ืฉืืึทื ืคืื ืื ืืึทืืึทืืืืก.
ื ืืืืฅ:ืืืื ืืืจ ืจืขืงืึธืจืืืจื ืื queryid ืืื ืงืืืืจืื, ืืืจ ืืืขืื ืืึทืงืืืขื ืื ืืขืฉืืืืข ืคึฟืึทืจ ืึท ืืึทืืื ืืขืจ ืึธื ืคึฟืจืขื (ืืื ืกืืจ ืฆื ืฉืคึผืึธืจื ืคึผืืึทืฅ, ืจืืคึผืึธืจืฅ ืคึฟืึทืจ ืึท ืืึทืืื ืืขืจ ืึธื ืคึฟืจืขื ืืขื ืขื ืืืืขืจืืขืืืคึผืขืจื).
ืึทืืื, ืกืืึทืืืกืืืฉ ืืึทืื ืืืขืื ืึธื ืคึฟืจืขื ืคืึธืจืฉืืขืืื ื ืืขื ืขื ืื ืืืฆื ืืื ืืขืืืืื.
ืืขืจ ืขืจืฉืืขืจ ืืื ืข "ืืึทืืืื ื ืคืื ืกืืึทืืืกืืืฉ ืืึทืื" ืืื ืืขืขื ืืืงื.
ืืืจ ืงืขื ืขื ืืึทื ืืืืฃ ืฆื ืื ืจืืข ืืื ืข - "ืกืขืืืื ื ืคืึธืจืฉืืขืืื ื ืืขืืจืืงืก".
ืึธืืขืจ ืืึธืก ืืื ืึท ืืึธืจ ืึทื ืืขืจืฉ ืืขืฉืืืืข.
ืฆื ืคืึธืจืืขืฆื ...
ืืงืืจ: www.habr.com