數據庫設計加速休眠查詢大數據集

Question

我目前有下表代表總線網絡映射在休眠，訪問從基於Spring MVC的巴士路線規劃 我試圖讓我的路線規劃應用程序執行更快，我將所有上述表加載到列表中以執行路由規劃器邏輯。

，如果任何人對如何加快我的服務表現 任何意見或另一種方法的任何建議接近的處理大數據集

Coordinate Connections Table (INT,INT,INT)(Containing 50,000 Coordinate Connections) 
    ID, FROMCOORDID, TOCOORDID 
    1 1    2  
    2 1    17  
    3 1    63  
    4 1    64  
    5 1    65  
    6 1    95  

    Coordinate Table (INT,DECIMAL, DECIMAL) (Containing 4700 Coordinates) 
    ID , LAT,  LNG 
    0 59.352669 -7.264341 
    1 59.352669 -7.264341 
    2 59.350012 -7.260653 
    3 59.337585 -7.189798 
    4 59.339221 -7.193582 
    5 59.341408 -7.205888 

    Bus Stop Table (INT, INT, INT)(Containing 15000 Stops) 
    StopID RouteID COORDINATEID 
    1000100001 100  17 
    1000100002 100  18 
    1000100003 100  19 
    1000100004 100  20 
    1000100005 100  21 
    1000100006 100  22 
    1000100007 100  23 

這是需要多長時間來的這個問題，我將不勝感激

stop.findAll = 148ms, stops.size: 15670 
    Hibernate: select coordinate0_.COORDINATEID as COORDINA1_2_, coordinate0_.LAT as LAT2_, coordinate0_.LNG as LNG2_ from COORDINATES coordinate0_ 
    coord.findAll = 51ms , coordinates.size: 4704 
    Hibernate: select coordconne0_.COORDCONNECTIONID as COORDCON1_3_, coordconne0_.DISTANCE as DISTANCE3_, coordconne0_.FROMCOORDID as FROMCOOR3_3_, coordconne0_.TOCOORDID as TOCOORDID3_ from COORDCONNECTIONS coordconne0_ 
    coordinateConnectionDao.findAll = 238ms ; coordConnectioninates.size:48132 

Hibernate註解

@Entity 
    @Table(name = "STOPS") 
    public class Stop implements Serializable { 

     @Id 
     @GeneratedValue 
     @Column(name = "COORDINATEID") 
     private Integer CoordinateID; 


     @Column(name = "LAT") 
     private double latitude; 


     @Column(name = "LNG") 
     private double longitude; 

    } 




    @Table(name = "COORDINATES") 
    public class Coordinate { 

     @Id 
     @GeneratedValue 
     @Column(name = "COORDINATEID") 
     private Integer CoordinateID; 


     @Column(name = "LAT") 
     private double latitude; 


     @Column(name = "LNG") 
     private double longitude; 
    } 

    @Entity 
    @Table(name = "COORDCONNECTIONS") 
    public class CoordConnection { 

     @Id 
     @GeneratedValue 
     @Column(name = "COORDCONNECTIONID") 
     private Integer CoordinateID; 

     /** 
     * From Coordinate_id value 
     */ 
     @Column(name = "FROMCOORDID", nullable = false) 
     private int fromCoordID; 

     /** 
     * To Coordinate_id value 
     */ 
     @Column(name = "TOCOORDID", nullable = false) 
     private int toCoordID; 
     //private Coordinate toCoordID; 
    } 

：從每個表加載所有數據

的HashMap - > CoodinateID相協調的代碼

private void setupCoordinateIDToCoordinate() { 
    HashMap<Integer, Coordinate> coordinateIDToCoordinate = new HashMap<Integer, Coordinate>(); 
    List<Coordinate> coordinates = coordinateDao.findAll(); 
    Iterator <Coordinate> itr = coordinates.iterator(); 
    Coordinate c; 
    while(itr.hasNext()) { 
     c = itr.next(); 
     coordinateIDToCoordinate.put(c.getCoordinateID(),c); 
    } 
} 

Answer 1

與Hibernate實現了Ehcache幫助我提高了性能

Answer 2

看看MySQL中使用命令解釋給你的地方將是最好的指標放一些想法。

下面的鏈接很好地解釋了它。

http://forums.spry.com/howtos/1345-using-mysqls-explain-command.html