lv13 : 테스팅 완료

README.md

@@ -1 +1,26 @@
 # SPRING PLUS
+# ec2 생성<img width="1484" height="985" alt="ec2 생성완료" src="https://github.com/user-attachments/assets/e35358f5-3464-479f-ace2-2a8a6a31e0c5" />
+# db생성<img width="1832" height="494" alt="db 생성완료" src="https://github.com/user-attachments/assets/1e3d3ac9-0cd3-417a-9ce7-b8e61f0a55cd" />
+# ec2 & db 연결<img width="721" height="461" alt="서버 연결" src="https://github.com/user-attachments/assets/47f81fd6-7fe8-4f57-9c51-da3f86272846" />
+# ec2 구동<img width="902" height="1010" alt="구동완료" src="https://github.com/user-attachments/assets/845d2264-6e9f-4e6b-a95d-6b4c22272d6d" />
+
+# s3 버킷 생성<img width="1865" height="960" alt="s3 버킷 생성" src="https://github.com/user-attachments/assets/b9cc8a77-18dd-4fff-a000-5a9a3d6e364e" />
+
+
+### 1. 대용량 데이터 삽입 (Bulk Insert)
+- **사용 기술**: `JdbcTemplate` (Batch Update)
+- **최적화 설정**: JDBC URL 옵션에 `rewriteBatchedStatements=true` 적용
+- **데이터 양**: 5,000,000건
+- **결과**: 총 **88초** 소요 (약 1분 28초)
+- **분석**: JPA의 `saveAll` 방식(단건 호출) 대신 JDBC Batch를 활용하여 네트워크 오버헤드를 최소화함으로써 대량의 데이터를 매우 빠르게 삽입할 수 있었습니다.
+
+---
+
+### 2. 조회 성능 테스트 및 인덱스(Index) 최적화
+유저 닉네임을 조건으로 하는 검색 기능에 대해 인덱스 적용 전/후 성능을 비교 측정했습니다.
+- **검색 대상**: `User_4999999` (데이터의 최하단부 검색)
+
+| 구분 | 검색 방식 | 소요 시간 | 비고 |
+| :--- | :--- | :--- | :--- |
+| **인덱스 적용 전** | **Full Table Scan** | **4,281ms** | 전체 행(500만건)을 하나씩 대조 |
+| **인덱스 적용 후** | **Index Range Scan** | **210ms** | B-Tree 구조를 통해 즉시 접근 (약 20배 향상) |

build.gradle

@@ -24,6 +24,12 @@ repositories {
 }
 
 dependencies {
+
+
+    // springSecurity 추가
+    implementation 'org.springframework.boot:spring-boot-starter-security'
+
+
     implementation 'org.springframework.boot:spring-boot-starter-validation'
     implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
     implementation 'org.springframework.boot:spring-boot-starter-web'
@@ -41,6 +47,34 @@ dependencies {
     compileOnly group: 'io.jsonwebtoken', name: 'jjwt-api', version: '0.11.5'
     runtimeOnly group: 'io.jsonwebtoken', name: 'jjwt-impl', version: '0.11.5'
     runtimeOnly group: 'io.jsonwebtoken', name: 'jjwt-jackson', version: '0.11.5'
+
+    //QueryDSL
+    // 1. QueryDSL 라이브러리
+    implementation 'com.querydsl:querydsl-jpa:5.0.0:jakarta'
+
+    // 2. QueryDSL용 어노테이션 프로세서 (컴파일 시 Q클래스 생성)
+    annotationProcessor "com.querydsl:querydsl-apt:5.0.0:jakarta"
+    annotationProcessor "jakarta.persistence:jakarta.persistence-api"
+    annotationProcessor "jakarta.annotation:jakarta.annotation-api"
+
+    implementation 'com.querydsl:querydsl-jpa:5.0.0:jakarta'
+    annotationProcessor "com.querydsl:querydsl-apt:5.0.0:jakarta"
+    annotationProcessor "jakarta.persistence:jakarta.persistence-api"
+    annotationProcessor "jakarta.annotation:jakarta.annotation-api"
+}
+
+def querydslDir = "src/main/generated"
+
+sourceSets {
+    main.java.srcDirs += [ querydslDir ]
+}
+
+tasks.withType(JavaCompile) {
+    options.getGeneratedSourceOutputDirectory().set(file(querydslDir))
+}
+
+clean {
+    delete file(querydslDir)
 }
 
 tasks.named('test') {

src/main/generated/org/example/expert/domain/comment/entity/QComment.java

@@ -0,0 +1,64 @@
+package org.example.expert.domain.comment.entity;
+
+import static com.querydsl.core.types.PathMetadataFactory.*;
+
+import com.querydsl.core.types.dsl.*;
+
+import com.querydsl.core.types.PathMetadata;
+import javax.annotation.processing.Generated;
+import com.querydsl.core.types.Path;
+import com.querydsl.core.types.dsl.PathInits;
+
+
+/**
+ * QComment is a Querydsl query type for Comment
+ */
+@Generated("com.querydsl.codegen.DefaultEntitySerializer")
+public class QComment extends EntityPathBase<Comment> {
+
+    private static final long serialVersionUID = 1329458967L;
+
+    private static final PathInits INITS = PathInits.DIRECT2;
+
+    public static final QComment comment = new QComment("comment");
+
+    public final org.example.expert.domain.common.entity.QTimestamped _super = new org.example.expert.domain.common.entity.QTimestamped(this);
+
+    public final StringPath contents = createString("contents");
+
+    //inherited
+    public final DateTimePath<java.time.LocalDateTime> createdAt = _super.createdAt;
+
+    public final NumberPath<Long> id = createNumber("id", Long.class);
+
+    //inherited
+    public final DateTimePath<java.time.LocalDateTime> modifiedAt = _super.modifiedAt;
+
+    public final org.example.expert.domain.todo.entity.QTodo todo;
+
+    public final org.example.expert.domain.user.entity.QUser user;
+
+    public QComment(String variable) {
+        this(Comment.class, forVariable(variable), INITS);
+    }
+
+    public QComment(Path<? extends Comment> path) {
+        this(path.getType(), path.getMetadata(), PathInits.getFor(path.getMetadata(), INITS));
+    }
+
+    public QComment(PathMetadata metadata) {
+        this(metadata, PathInits.getFor(metadata, INITS));
+    }
+
+    public QComment(PathMetadata metadata, PathInits inits) {
+        this(Comment.class, metadata, inits);
+    }
+
+    public QComment(Class<? extends Comment> type, PathMetadata metadata, PathInits inits) {
+        super(type, metadata, inits);
+        this.todo = inits.isInitialized("todo") ? new org.example.expert.domain.todo.entity.QTodo(forProperty("todo"), inits.get("todo")) : null;
+        this.user = inits.isInitialized("user") ? new org.example.expert.domain.user.entity.QUser(forProperty("user")) : null;
+    }
+
+}
+

src/main/generated/org/example/expert/domain/common/entity/QTimestamped.java

@@ -0,0 +1,39 @@
+package org.example.expert.domain.common.entity;
+
+import static com.querydsl.core.types.PathMetadataFactory.*;
+
+import com.querydsl.core.types.dsl.*;
+
+import com.querydsl.core.types.PathMetadata;
+import javax.annotation.processing.Generated;
+import com.querydsl.core.types.Path;
+
+
+/**
+ * QTimestamped is a Querydsl query type for Timestamped
+ */
+@Generated("com.querydsl.codegen.DefaultSupertypeSerializer")
+public class QTimestamped extends EntityPathBase<Timestamped> {
+
+    private static final long serialVersionUID = -1617243527L;
+
+    public static final QTimestamped timestamped = new QTimestamped("timestamped");
+
+    public final DateTimePath<java.time.LocalDateTime> createdAt = createDateTime("createdAt", java.time.LocalDateTime.class);
+
+    public final DateTimePath<java.time.LocalDateTime> modifiedAt = createDateTime("modifiedAt", java.time.LocalDateTime.class);
+
+    public QTimestamped(String variable) {
+        super(Timestamped.class, forVariable(variable));
+    }
+
+    public QTimestamped(Path<? extends Timestamped> path) {
+        super(path.getType(), path.getMetadata());
+    }
+
+    public QTimestamped(PathMetadata metadata) {
+        super(Timestamped.class, metadata);
+    }
+
+}
+

src/main/generated/org/example/expert/domain/manager/entity/QManager.java

@@ -0,0 +1,54 @@
+package org.example.expert.domain.manager.entity;
+
+import static com.querydsl.core.types.PathMetadataFactory.*;
+
+import com.querydsl.core.types.dsl.*;
+
+import com.querydsl.core.types.PathMetadata;
+import javax.annotation.processing.Generated;
+import com.querydsl.core.types.Path;
+import com.querydsl.core.types.dsl.PathInits;
+
+
+/**
+ * QManager is a Querydsl query type for Manager
+ */
+@Generated("com.querydsl.codegen.DefaultEntitySerializer")
+public class QManager extends EntityPathBase<Manager> {
+
+    private static final long serialVersionUID = 216623447L;
+
+    private static final PathInits INITS = PathInits.DIRECT2;
+
+    public static final QManager manager = new QManager("manager");
+
+    public final NumberPath<Long> id = createNumber("id", Long.class);
+
+    public final org.example.expert.domain.todo.entity.QTodo todo;
+
+    public final org.example.expert.domain.user.entity.QUser user;
+
+    public QManager(String variable) {
+        this(Manager.class, forVariable(variable), INITS);
+    }
+
+    public QManager(Path<? extends Manager> path) {
+        this(path.getType(), path.getMetadata(), PathInits.getFor(path.getMetadata(), INITS));
+    }
+
+    public QManager(PathMetadata metadata) {
+        this(metadata, PathInits.getFor(metadata, INITS));
+    }
+
+    public QManager(PathMetadata metadata, PathInits inits) {
+        this(Manager.class, metadata, inits);
+    }
+
+    public QManager(Class<? extends Manager> type, PathMetadata metadata, PathInits inits) {
+        super(type, metadata, inits);
+        this.todo = inits.isInitialized("todo") ? new org.example.expert.domain.todo.entity.QTodo(forProperty("todo"), inits.get("todo")) : null;
+        this.user = inits.isInitialized("user") ? new org.example.expert.domain.user.entity.QUser(forProperty("user")) : null;
+    }
+
+}
+

src/main/generated/org/example/expert/domain/todo/dto/response/QTodoSearchResponse.java

@@ -0,0 +1,21 @@
+package org.example.expert.domain.todo.dto.response;
+
+import com.querydsl.core.types.dsl.*;
+
+import com.querydsl.core.types.ConstructorExpression;
+import javax.annotation.processing.Generated;
+
+/**
+ * org.example.expert.domain.todo.dto.response.QTodoSearchResponse is a Querydsl Projection type for TodoSearchResponse
+ */
+@Generated("com.querydsl.codegen.DefaultProjectionSerializer")
+public class QTodoSearchResponse extends ConstructorExpression<TodoSearchResponse> {
+
+    private static final long serialVersionUID = -1940571367L;
+
+    public QTodoSearchResponse(com.querydsl.core.types.Expression<String> title, com.querydsl.core.types.Expression<Long> managerCount, com.querydsl.core.types.Expression<Long> commentCount) {
+        super(TodoSearchResponse.class, new Class<?>[]{String.class, long.class, long.class}, title, managerCount, commentCount);
+    }
+
+}
+

src/main/generated/org/example/expert/domain/todo/entity/QTodo.java

@@ -0,0 +1,69 @@
+package org.example.expert.domain.todo.entity;
+
+import static com.querydsl.core.types.PathMetadataFactory.*;
+
+import com.querydsl.core.types.dsl.*;
+
+import com.querydsl.core.types.PathMetadata;
+import javax.annotation.processing.Generated;
+import com.querydsl.core.types.Path;
+import com.querydsl.core.types.dsl.PathInits;
+
+
+/**
+ * QTodo is a Querydsl query type for Todo
+ */
+@Generated("com.querydsl.codegen.DefaultEntitySerializer")
+public class QTodo extends EntityPathBase<Todo> {
+
+    private static final long serialVersionUID = -1664369315L;
+
+    private static final PathInits INITS = PathInits.DIRECT2;
+
+    public static final QTodo todo = new QTodo("todo");
+
+    public final org.example.expert.domain.common.entity.QTimestamped _super = new org.example.expert.domain.common.entity.QTimestamped(this);
+
+    public final ListPath<org.example.expert.domain.comment.entity.Comment, org.example.expert.domain.comment.entity.QComment> comments = this.<org.example.expert.domain.comment.entity.Comment, org.example.expert.domain.comment.entity.QComment>createList("comments", org.example.expert.domain.comment.entity.Comment.class, org.example.expert.domain.comment.entity.QComment.class, PathInits.DIRECT2);
+
+    public final StringPath contents = createString("contents");
+
+    //inherited
+    public final DateTimePath<java.time.LocalDateTime> createdAt = _super.createdAt;
+
+    public final NumberPath<Long> id = createNumber("id", Long.class);
+
+    public final ListPath<org.example.expert.domain.manager.entity.Manager, org.example.expert.domain.manager.entity.QManager> managers = this.<org.example.expert.domain.manager.entity.Manager, org.example.expert.domain.manager.entity.QManager>createList("managers", org.example.expert.domain.manager.entity.Manager.class, org.example.expert.domain.manager.entity.QManager.class, PathInits.DIRECT2);
+
+    //inherited
+    public final DateTimePath<java.time.LocalDateTime> modifiedAt = _super.modifiedAt;
+
+    public final StringPath title = createString("title");
+
+    public final org.example.expert.domain.user.entity.QUser user;
+
+    public final StringPath weather = createString("weather");
+
+    public QTodo(String variable) {
+        this(Todo.class, forVariable(variable), INITS);
+    }
+
+    public QTodo(Path<? extends Todo> path) {
+        this(path.getType(), path.getMetadata(), PathInits.getFor(path.getMetadata(), INITS));
+    }
+
+    public QTodo(PathMetadata metadata) {
+        this(metadata, PathInits.getFor(metadata, INITS));
+    }
+
+    public QTodo(PathMetadata metadata, PathInits inits) {
+        this(Todo.class, metadata, inits);
+    }
+
+    public QTodo(Class<? extends Todo> type, PathMetadata metadata, PathInits inits) {
+        super(type, metadata, inits);
+        this.user = inits.isInitialized("user") ? new org.example.expert.domain.user.entity.QUser(forProperty("user")) : null;
+    }
+
+}
+

src/main/generated/org/example/expert/domain/user/entity/QUser.java

@@ -0,0 +1,53 @@
+package org.example.expert.domain.user.entity;
+
+import static com.querydsl.core.types.PathMetadataFactory.*;
+
+import com.querydsl.core.types.dsl.*;
+
+import com.querydsl.core.types.PathMetadata;
+import javax.annotation.processing.Generated;
+import com.querydsl.core.types.Path;
+
+
+/**
+ * QUser is a Querydsl query type for User
+ */
+@Generated("com.querydsl.codegen.DefaultEntitySerializer")
+public class QUser extends EntityPathBase<User> {
+
+    private static final long serialVersionUID = -1825397529L;
+
+    public static final QUser user = new QUser("user");
+
+    public final org.example.expert.domain.common.entity.QTimestamped _super = new org.example.expert.domain.common.entity.QTimestamped(this);
+
+    //inherited
+    public final DateTimePath<java.time.LocalDateTime> createdAt = _super.createdAt;
+
+    public final StringPath email = createString("email");
+
+    public final NumberPath<Long> id = createNumber("id", Long.class);
+
+    //inherited
+    public final DateTimePath<java.time.LocalDateTime> modifiedAt = _super.modifiedAt;
+
+    public final StringPath nickname = createString("nickname");
+
+    public final StringPath password = createString("password");
+
+    public final EnumPath<org.example.expert.domain.user.enums.UserRole> userRole = createEnum("userRole", org.example.expert.domain.user.enums.UserRole.class);
+
+    public QUser(String variable) {
+        super(User.class, forVariable(variable));
+    }
+
+    public QUser(Path<? extends User> path) {
+        super(path.getType(), path.getMetadata());
+    }
+
+    public QUser(PathMetadata metadata) {
+        super(User.class, metadata);
+    }
+
+}
+