add indexes to jpa entities

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/model/CustomerRewardsAccount.java

@@ -4,8 +4,11 @@ import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.Index;
+import javax.persistence.Table;
 
 @Entity
+@Table(indexes = {@Index(columnList="customerId")})
 public class CustomerRewardsAccount {
 
     @Id

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/model/Transaction.java

@@ -4,10 +4,14 @@ import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.Index;
+import javax.persistence.Table;
+
 import java.util.Date;
 import java.util.Calendar;
 
 @Entity
+@Table(indexes = {@Index(columnList="customerRewardsId")})
 public class Transaction {
 
     @Id

testing-modules/load-testing-comparison/src/main/resources/application.properties

@@ -2,6 +2,6 @@ spring.h2.console.enabled=true
 spring.datasource.url=jdbc:h2:mem:testdb
 spring.datasource.driverClassName=org.h2.Driver
 spring.datasource.username=sa
-spring.datasource.password=password
+spring.datasource.password=
 spring.jpa.database-platform=org.hibernate.dialect.H2Dialect