diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java
index 314f119..39d9d88 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java
@@ -6,6 +6,7 @@
 package org.funcode.portal.server.common.domain.ielts;
 
 
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import io.swagger.v3.oas.annotations.media.Schema;
@@ -33,7 +34,8 @@
 @Builder
 @Entity
 @ToString(callSuper = true)
-@Table(name = "tb_course")
+@Table(name = "tb_course",
+        indexes = @Index(name = "index_tb_course_status", columnList = Course_.STATUS))
 @Comment("课程管理表")
 @Schema(description = "课程")
 @DynamicUpdate
@@ -55,7 +57,7 @@ public class Course extends BaseEntity {
     @Column(nullable = false)
     @Comment("课程状态（0：已下架;1：已上架;2：下架并静止播放）")
     @Schema(description = "课程状态（0：已下架;1：已上架;2：下架并静止播放）")
-    private int status;
+    private Integer status;
 
     @Column
     @Comment("课程价格")
@@ -89,33 +91,25 @@ public class Course extends BaseEntity {
     private Set<Storage> courseAttachmentStorages;
 
     @ManyToMany(mappedBy = "courses")
-    @JsonIgnore
     @ToString.Exclude
+    @JsonBackReference
     private Set<CourseColumn> courseColumns;
 
     @ManyToMany
     @JoinTable(
-            name = "tb_order_course",
+            name = "tb_order_tb_course",
             joinColumns = @JoinColumn(name = "course_id"),
             inverseJoinColumns = @JoinColumn(name = "order_id"))
-    @JsonIgnore
     @ToString.Exclude
+    @JsonBackReference
     private Set<Order> orders;
 
-    @ManyToMany
-    @JoinTable(
-            name = "tb_redeem_code_course",
-            joinColumns = @JoinColumn(name = "course_id"),
-            inverseJoinColumns = @JoinColumn(name = "redeem_code_id"))
+    @ManyToMany(mappedBy = "courses")
     @JsonIgnore
     @ToString.Exclude
     private Set<RedeemCode> redeemCodes;
 
-    @ManyToMany
-    @JoinTable(
-            name = "tb_user_course",
-            joinColumns = @JoinColumn(name = "course_id"),
-            inverseJoinColumns = @JoinColumn(name = "user_id"))
+    @ManyToMany(mappedBy = "courses")
     @JsonIgnore
     @ToString.Exclude
     private Set<User> users;
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java
index 39effde..26854a5 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java
@@ -6,8 +6,10 @@
 package org.funcode.portal.server.common.domain.ielts;
 
 
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.persistence.*;
 import lombok.*;
@@ -33,7 +35,8 @@
 @Builder
 @Entity
 @ToString(callSuper = true)
-@Table(name = "tb_course_column")
+@Table(name = "tb_course_column",
+        indexes = @Index(name = "index_tb_course_column_status", columnList = CourseColumn_.STATUS))
 @Comment("课程专栏管理表")
 @Schema(description = "课程专栏")
 @DynamicUpdate
@@ -55,7 +58,7 @@ public class CourseColumn extends BaseEntity {
     @Column(nullable = false)
     @Comment("专栏状态（0：已下架;1：已上架;2：下架并静止播放）")
     @Schema(description = "专栏状态（0：已下架;1：已上架;2：下架并静止播放）")
-    private int status;
+    private Integer status;
 
     @Column(nullable = false)
     @Comment("课程专栏价格")
@@ -79,31 +82,25 @@ public class CourseColumn extends BaseEntity {
             name = "tb_course_course_column",
             joinColumns = @JoinColumn(name = "course_column_id"),
             inverseJoinColumns = @JoinColumn(name = "course_id"))
+    @ToString.Exclude
+    @JsonManagedReference
     private Set<Course> courses;
 
     @ManyToMany
     @JoinTable(
-            name = "tb_order_course_column",
+            name = "tb_order_tb_course_column",
             joinColumns = @JoinColumn(name = "course_column_id"),
             inverseJoinColumns = @JoinColumn(name = "order_id"))
-    @JsonIgnore
     @ToString.Exclude
+    @JsonBackReference
     private Set<Order> orders;
 
-    @ManyToMany
-    @JoinTable(
-            name = "tb_redeem_code_course_column",
-            joinColumns = @JoinColumn(name = "course_column_id"),
-            inverseJoinColumns = @JoinColumn(name = "redeem_code_id"))
+    @ManyToMany(mappedBy = "courseColumns")
     @JsonIgnore
     @ToString.Exclude
     private Set<RedeemCode> redeemCodes;
 
-    @ManyToMany
-    @JoinTable(
-            name = "tb_user_course_column",
-            joinColumns = @JoinColumn(name = "course_column_id"),
-            inverseJoinColumns = @JoinColumn(name = "user_id"))
+    @ManyToMany(mappedBy = "courseColumns")
     @JsonIgnore
     @ToString.Exclude
     private Set<User> users;
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Order.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Order.java
index f0941a2..06c6d71 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Order.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Order.java
@@ -8,6 +8,7 @@
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
@@ -38,7 +39,8 @@
 @Builder
 @Entity
 @ToString(callSuper = true)
-@Table(name = "tb_order")
+@Table(name = "tb_order",
+        indexes = @Index(name = "index_tb_order_user", columnList = "order_user_id"))
 @Comment("订单管理表")
 @Schema(description = "订单")
 @DynamicUpdate
@@ -55,7 +57,7 @@ public class Order extends BaseEntity {
     @Column(nullable = false)
     @Comment("交易方式（0：兑换码;1：微信支付）")
     @Schema(description = "交易方式（0：兑换码;1：微信支付）")
-    private int tradeType;
+    private Integer tradeType;
 
     @Column
     @Temporal(TemporalType.TIMESTAMP)
@@ -75,12 +77,23 @@ public class Order extends BaseEntity {
     @JoinColumn(name = "order_user_id", referencedColumnName = "id")
     @Comment("人员")
     @Schema(description = "人员")
+    @JsonManagedReference
     private User user;
 
-    @ManyToMany(mappedBy = "orders", fetch = FetchType.EAGER)
+    @ManyToMany(fetch = FetchType.EAGER)
+    @JoinTable(
+            name = "tb_order_tb_course",
+            joinColumns = @JoinColumn(name = "order_id"),
+            inverseJoinColumns = @JoinColumn(name = "course_id"))
+    @JsonManagedReference
     private Set<Course> courses;
 
-    @ManyToMany(mappedBy = "orders", fetch = FetchType.EAGER)
+    @ManyToMany(fetch = FetchType.EAGER)
+    @JoinTable(
+            name = "tb_order_tb_course_column",
+            joinColumns = @JoinColumn(name = "order_id"),
+            inverseJoinColumns = @JoinColumn(name = "course_column_id"))
+    @JsonManagedReference
     private Set<CourseColumn> courseColumns;
 
     @Override
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/RedeemCode.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/RedeemCode.java
index 0251951..9335c32 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/RedeemCode.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/RedeemCode.java
@@ -37,7 +37,8 @@
 @Builder
 @Entity
 @ToString(callSuper = true)
-@Table(name = "tb_redeem_code")
+@Table(name = "tb_redeem_code",
+        indexes = @Index(name = "index_tb_redeem_code_code", columnList = RedeemCode_.CODE))
 @Comment("兑换码管理表")
 @Schema(description = "兑换码")
 @DynamicUpdate
@@ -79,10 +80,18 @@ public class RedeemCode extends BaseEntity {
     @Schema(description = "兑换时间")
     private LocalDateTime redeemTime;
 
-    @ManyToMany(fetch = FetchType.EAGER, mappedBy = "redeemCodes")
+    @ManyToMany(fetch = FetchType.EAGER)
+    @JoinTable(
+            name = "tb_redeem_code_course",
+            joinColumns = @JoinColumn(name = "redeem_code_id"),
+            inverseJoinColumns = @JoinColumn(name = "course_id"))
     private Set<Course> courses;
 
-    @ManyToMany(fetch = FetchType.EAGER, mappedBy = "redeemCodes")
+    @ManyToMany(fetch = FetchType.EAGER)
+    @JoinTable(
+            name = "tb_redeem_code_course_column",
+            joinColumns = @JoinColumn(name = "redeem_code_id"),
+            inverseJoinColumns = @JoinColumn(name = "course_column_id"))
     private Set<CourseColumn> courseColumns;
 
     @ManyToOne
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/BasicAuthority.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/BasicAuthority.java
index c3419ce..28ff804 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/BasicAuthority.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/BasicAuthority.java
@@ -31,7 +31,8 @@
 @Builder
 @Entity
 @ToString(callSuper = true)
-@Table(name = "tb_basic_authority")
+@Table(name = "tb_basic_authority",
+        indexes = @Index(name = "index_tb_basic_authority_authority_key", columnList = BasicAuthority_.AUTHORITY_KEY))
 @Comment("权限表")
 @Schema(description = "权限")
 @DynamicUpdate
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/Role.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/Role.java
index 744d6fa..354b588 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/Role.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/Role.java
@@ -31,7 +31,8 @@
 @Builder
 @Entity
 @ToString(callSuper = true)
-@Table(name = "tb_role")
+@Table(name = "tb_role",
+        indexes = @Index(name = "index_tb_role_role_key", columnList = Role_.ROLE_KEY))
 @Comment("角色表")
 @Schema(description = "角色")
 @DynamicUpdate
@@ -65,7 +66,7 @@ public class Role extends BaseEntity implements GrantedAuthority {
             name = "tb_role_basic_authority",
             joinColumns = @JoinColumn(name = "role_id"),
             inverseJoinColumns = @JoinColumn(name = "basic_authority_id"))
-    @JsonIgnore
+    @ToString.Exclude
     private Set<BasicAuthority> basicAuthorities;
 
     @ManyToMany(mappedBy = "roles")
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/User.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/User.java
index 7394fd3..cdc5f08 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/User.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/security/User.java
@@ -5,6 +5,7 @@
 
 package org.funcode.portal.server.common.domain.security;
 
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import io.swagger.v3.oas.annotations.media.Schema;
@@ -17,15 +18,13 @@
 import org.funcode.portal.server.common.domain.ielts.RedeemCode;
 import org.hibernate.annotations.Comment;
 import org.hibernate.annotations.DynamicUpdate;
+import org.hibernate.proxy.HibernateProxy;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.util.CollectionUtils;
 
 import java.time.LocalDate;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 
 /**
  * @author 李冲
@@ -38,7 +37,6 @@
 @NoArgsConstructor
 @Builder
 @Entity
-@EqualsAndHashCode(callSuper = false, of = {"id"})
 @ToString(callSuper = true)
 @Table(name = "tb_user")
 @Comment("人员表")
@@ -115,15 +113,17 @@ public class User extends BaseEntity implements UserDetails {
     @Comment("是否启用")
     @Schema(description = "是否启用")
     private boolean enabled = true;
-    @ManyToMany(targetEntity = Role.class, fetch = FetchType.EAGER)
+    @ManyToMany(fetch = FetchType.LAZY)
     @JoinTable(
             name = "tb_user_role",
             joinColumns = @JoinColumn(name = "user_id"),
             inverseJoinColumns = @JoinColumn(name = "role_id"))
+    @ToString.Exclude
     private Set<Role> roles;
 
-    @OneToMany(mappedBy = "user", fetch = FetchType.EAGER)
+    @OneToMany(fetch = FetchType.EAGER)
     @ToString.Exclude
+    @JsonBackReference
     private Set<Order> orders;
 
     @OneToMany(mappedBy = "user")
@@ -131,10 +131,19 @@ public class User extends BaseEntity implements UserDetails {
     @ToString.Exclude
     private Set<RedeemCode> redeemCodes;
 
-    @ManyToMany(mappedBy = "users", fetch = FetchType.EAGER)
+    @ManyToMany(fetch = FetchType.EAGER)
+    @JoinTable(
+            name = "tb_user_course_column",
+            joinColumns = @JoinColumn(name = "user_id"),
+            inverseJoinColumns = @JoinColumn(name = "course_column_id"))
+    @ToString.Exclude
     private Set<CourseColumn> courseColumns;
 
-    @ManyToMany(mappedBy = "users")
+    @ManyToMany(fetch = FetchType.EAGER)
+    @JoinTable(
+            name = "tb_user_course",
+            joinColumns = @JoinColumn(name = "user_id"),
+            inverseJoinColumns = @JoinColumn(name = "course_id"))
     @ToString.Exclude
     private Set<Course> courses;
 
@@ -149,4 +158,19 @@ public Collection<? extends GrantedAuthority> getAuthorities() {
         return result;
     }
 
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        Class<?> oEffectiveClass = o instanceof HibernateProxy ? ((HibernateProxy) o).getHibernateLazyInitializer().getPersistentClass() : o.getClass();
+        Class<?> thisEffectiveClass = this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer().getPersistentClass() : this.getClass();
+        if (thisEffectiveClass != oEffectiveClass) return false;
+        User user = (User) o;
+        return getId() != null && Objects.equals(getId(), user.getId());
+    }
+
+    @Override
+    public final int hashCode() {
+        return this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer().getPersistentClass().hashCode() : getClass().hashCode();
+    }
 }
diff --git a/module/ielts/src/main/java/org/funcode/portal/server/module/ielts/redeem/code/service/impl/RedeemCodeServiceImpl.java b/module/ielts/src/main/java/org/funcode/portal/server/module/ielts/redeem/code/service/impl/RedeemCodeServiceImpl.java
index b20f61e..1f93843 100644
--- a/module/ielts/src/main/java/org/funcode/portal/server/module/ielts/redeem/code/service/impl/RedeemCodeServiceImpl.java
+++ b/module/ielts/src/main/java/org/funcode/portal/server/module/ielts/redeem/code/service/impl/RedeemCodeServiceImpl.java
@@ -73,9 +73,13 @@ public RedeemCode redeem(String code) {
         currentUser.setCourseColumns(courseColumns);
         userRepository.save(currentUser);
         // 保存订单
+        Set<Course> orderCourses = new HashSet<>(courses.size());
+        orderCourses.addAll(courses);
+        Set<CourseColumn> orderCourseColumns = new HashSet<>(courseColumns.size());
+        orderCourseColumns.addAll(courseColumns);
         Order order = Order.builder()
-                .courses(courses)
-                .courseColumns(courseColumns)
+                .courses(orderCourses)
+                .courseColumns(orderCourseColumns)
                 .paymentTime(now)
                 .price(BigDecimal.valueOf(0))
                 .tradeType(0)