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refactor: 인기게시글 조회시 쿼리발생횟수 변경
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@youngreal
youngreal committed Feb 21, 2024
1 parent ed1946e commit 661ef5f
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306 changes: 153 additions & 153 deletions src/main/java/com/example/inflearn/common/PostInitializer.java
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@@ -1,153 +1,153 @@
package com.example.inflearn.common;

import com.example.inflearn.domain.comment.Comment;
import com.example.inflearn.domain.hashtag.Hashtag;
import com.example.inflearn.domain.like.Like;
import com.example.inflearn.domain.member.Member;
import com.example.inflearn.domain.post.domain.Post;
import com.example.inflearn.domain.post.domain.PostHashtag;
import com.example.inflearn.infra.repository.comment.CommentRepository;
import com.example.inflearn.infra.repository.like.LikeRepository;
import com.example.inflearn.infra.repository.member.MemberRepository;
import com.example.inflearn.infra.repository.post.PostHashtagRepository;
import com.example.inflearn.infra.repository.post.PostRepository;
import jakarta.annotation.PostConstruct;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.List;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Profile;
import org.springframework.stereotype.Component;

@Profile("dev")
@RequiredArgsConstructor
@Component
public class PostInitializer {

private final MemberRepository memberRepository;
private final PostRepository postRepository;
private final PostHashtagRepository postHashtagRepository;
private final LikeRepository likeRepository;
private final CommentRepository commentRepository;
int hashtagCount = 0;
List<String> lists = List.of(
"java", "spring", "spring boot", "aws", "docker",
"elastic search", "백엔드", "로드맵","redis","kafka","쿠버네티스","msa","DB",
"프론트엔드", "ci", "cd", "배포", "무중단", "nest", "타입스크립트", "node", "git",
"서버", "데브옵스", "알고리즘", "자료구조", "운영체제", "스터디", "리액트", "이펙티브 자바",
"typescript", "nestjs", "rest", "python", "김영한", "백기선", "주니어", "신입", "C",
"C++", "바킹독", "코딩테스트", "Ruby", "코테", "온라인", "오프라인", "디스코드"
, "경력", "재직자", "이직준비", "디앱", "블록체인", "솔리디티", "각자도생", "sql", "데브옵스", "퍼블리셔",
"자바스크립트", "웹개발", "CS", "네트워크", "면접", "인터뷰","딥러닝","수학","1달","정처기","정보처리기사","기사시험",
"벌칙비","html","css","jenkins","github actions", "언리얼","tdd","클린코드","협업","프로젝트","백준","릿코드","자바의정석",
"기초","중급","고급","JPA","DBMS","real mysql","우테코","mvc","프리코스","이직러","모각코코","커피챗","비어챗","취준생위주",
"경력자위주","코테초보만","코테중수이상","코테고수들만","해외취업","배포자동화","유료스터디"
);


@PostConstruct
public void init() {
int batchSize = 1000;
int numberOfMemberToGenerate = 50_000;
int postsPerMember = 2;

for (int i = 1; i < numberOfMemberToGenerate; i+=batchSize) {
List<Member> members = generateMembers(i, batchSize);
memberRepository.saveAll(members);

List<Post> posts = new ArrayList<>();
for (Member member : members) {
posts.addAll(generatePostsForMember(postsPerMember, member)); // 1000 x 3
}
postRepository.saveAll(posts);


List<Like> likes = new ArrayList<>();
for (Post post : posts) {
likes.addAll(generateLikesForPost(post, members)); // 2000 x 3 = 6,000,000
}
likeRepository.saveAll(likes);

List<Comment> comments = new ArrayList<>();
for (Post post : posts) {
comments.addAll(generateCommentsForPost(post, members)); // 2000 x 3
}
commentRepository.saveAll(comments);


List<PostHashtag> postHashtags = new ArrayList<>();
for (Post post : posts) {
postHashtags.addAll(generatePostHashtagsForPost(post));
}

postHashtagRepository.saveAll(postHashtags);
}
}

private List<Like> generateLikesForPost(Post post, List<Member> members) {
List<Like> likes = new ArrayList<>();
SecureRandom secureRandom = new SecureRandom();
int randomIndex = secureRandom.nextInt(3);
int memberIndex = secureRandom.nextInt(999);
for (int i = 1; i <= randomIndex; i++) {
likes.add(Like.builder()
.member(members.get(memberIndex))
.post(post)
.build());
}
return likes;
}

private List<Comment> generateCommentsForPost(Post post, List<Member> members) {
List<Comment> comments = new ArrayList<>();
SecureRandom secureRandom = new SecureRandom();
int randomCommentCount = secureRandom.nextInt(3);
int memberIndex = secureRandom.nextInt(999);
for (int i = 1; i <= randomCommentCount; i++) {
comments.add(Comment.builder()
.member(members.get(memberIndex))
.post(post)
.contents("댓글 i")
.build());
}
return comments;
}

private List<PostHashtag> generatePostHashtagsForPost(Post post) {
List<PostHashtag> postHashtags = new ArrayList<>();
Hashtag hashtag = Hashtag.createHashtag("javavjavajavzza55123123ㅁ12321" + hashtagCount);
Hashtag hashtag2 = Hashtag.createHashtag("sprsfassaingzz55123213ㅁㄴㅇ13ㅣㅏㅣ" + hashtagCount);
postHashtags.add(PostHashtag.createPostHashtag(post, hashtag));
postHashtags.add(PostHashtag.createPostHashtag(post, hashtag2));
hashtagCount++;
return postHashtags;
}

private List<Post> generatePostsForMember(int numberOfPosts, Member member) {
List<Post> posts = new ArrayList<>();
for (int i = 1; i <= numberOfPosts; i++) {
SecureRandom secureRandom = new SecureRandom();
int randomIndex = secureRandom.nextInt(lists.size());
String randomHashtag = lists.get(randomIndex);
String postTitle = randomHashtag + "_" + i;
String postContents = randomHashtag + "_" + i;
posts.add(Post.builder()
.title(postTitle)
.contents(postContents)
.member(member)
.build());
}
return posts;
}

private List<Member> generateMembers(int start, int count) {
List<Member> members = new ArrayList<>();
for (int i = start; i < start + count; i++) {
members.add(Member.builder()
.email(i + "user12321sd1244zzㅓ[email protected]")
.password("12345678")
.build());
}
return members;
}
}
//package com.example.inflearn.common;
//
//import com.example.inflearn.domain.comment.Comment;
//import com.example.inflearn.domain.hashtag.Hashtag;
//import com.example.inflearn.domain.like.Like;
//import com.example.inflearn.domain.member.Member;
//import com.example.inflearn.domain.post.domain.Post;
//import com.example.inflearn.domain.post.domain.PostHashtag;
//import com.example.inflearn.infra.repository.comment.CommentRepository;
//import com.example.inflearn.infra.repository.like.LikeRepository;
//import com.example.inflearn.infra.repository.member.MemberRepository;
//import com.example.inflearn.infra.repository.post.PostHashtagRepository;
//import com.example.inflearn.infra.repository.post.PostRepository;
//import jakarta.annotation.PostConstruct;
//import java.security.SecureRandom;
//import java.util.ArrayList;
//import java.util.List;
//import lombok.RequiredArgsConstructor;
//import org.springframework.context.annotation.Profile;
//import org.springframework.stereotype.Component;
//
//@Profile("dev")
//@RequiredArgsConstructor
//@Component
//public class PostInitializer {
//
// private final MemberRepository memberRepository;
// private final PostRepository postRepository;
// private final PostHashtagRepository postHashtagRepository;
// private final LikeRepository likeRepository;
// private final CommentRepository commentRepository;
// int hashtagCount = 0;
// List<String> lists = List.of(
// "java", "spring", "spring boot", "aws", "docker",
// "elastic search", "백엔드", "로드맵","redis","kafka","쿠버네티스","msa","DB",
// "프론트엔드", "ci", "cd", "배포", "무중단", "nest", "타입스크립트", "node", "git",
// "서버", "데브옵스", "알고리즘", "자료구조", "운영체제", "스터디", "리액트", "이펙티브 자바",
// "typescript", "nestjs", "rest", "python", "김영한", "백기선", "주니어", "신입", "C",
// "C++", "바킹독", "코딩테스트", "Ruby", "코테", "온라인", "오프라인", "디스코드"
// , "경력", "재직자", "이직준비", "디앱", "블록체인", "솔리디티", "각자도생", "sql", "데브옵스", "퍼블리셔",
// "자바스크립트", "웹개발", "CS", "네트워크", "면접", "인터뷰","딥러닝","수학","1달","정처기","정보처리기사","기사시험",
// "벌칙비","html","css","jenkins","github actions", "언리얼","tdd","클린코드","협업","프로젝트","백준","릿코드","자바의정석",
// "기초","중급","고급","JPA","DBMS","real mysql","우테코","mvc","프리코스","이직러","모각코코","커피챗","비어챗","취준생위주",
// "경력자위주","코테초보만","코테중수이상","코테고수들만","해외취업","배포자동화","유료스터디"
// );
//
//
// @PostConstruct
// public void init() {
// int batchSize = 1000;
// int numberOfMemberToGenerate = 50_000;
// int postsPerMember = 2;
//
// for (int i = 1; i < numberOfMemberToGenerate; i+=batchSize) {
// List<Member> members = generateMembers(i, batchSize);
// memberRepository.saveAll(members);
//
// List<Post> posts = new ArrayList<>();
// for (Member member : members) {
// posts.addAll(generatePostsForMember(postsPerMember, member)); // 1000 x 3
// }
// postRepository.saveAll(posts);
//
//
// List<Like> likes = new ArrayList<>();
// for (Post post : posts) {
// likes.addAll(generateLikesForPost(post, members)); // 2000 x 3 = 6,000,000
// }
// likeRepository.saveAll(likes);
//
// List<Comment> comments = new ArrayList<>();
// for (Post post : posts) {
// comments.addAll(generateCommentsForPost(post, members)); // 2000 x 3
// }
// commentRepository.saveAll(comments);
//
//
// List<PostHashtag> postHashtags = new ArrayList<>();
// for (Post post : posts) {
// postHashtags.addAll(generatePostHashtagsForPost(post));
// }
//
// postHashtagRepository.saveAll(postHashtags);
// }
// }
//
// private List<Like> generateLikesForPost(Post post, List<Member> members) {
// List<Like> likes = new ArrayList<>();
// SecureRandom secureRandom = new SecureRandom();
// int randomIndex = secureRandom.nextInt(3);
// int memberIndex = secureRandom.nextInt(999);
// for (int i = 1; i <= randomIndex; i++) {
// likes.add(Like.builder()
// .member(members.get(memberIndex))
// .post(post)
// .build());
// }
// return likes;
// }
//
// private List<Comment> generateCommentsForPost(Post post, List<Member> members) {
// List<Comment> comments = new ArrayList<>();
// SecureRandom secureRandom = new SecureRandom();
// int randomCommentCount = secureRandom.nextInt(3);
// int memberIndex = secureRandom.nextInt(999);
// for (int i = 1; i <= randomCommentCount; i++) {
// comments.add(Comment.builder()
// .member(members.get(memberIndex))
// .post(post)
// .contents("댓글 i")
// .build());
// }
// return comments;
// }
//
// private List<PostHashtag> generatePostHashtagsForPost(Post post) {
// List<PostHashtag> postHashtags = new ArrayList<>();
// Hashtag hashtag = Hashtag.createHashtag("javavjavajavzza55123123ㅁ12321" + hashtagCount);
// Hashtag hashtag2 = Hashtag.createHashtag("sprsfassaingzz55123213ㅁㄴㅇ13ㅣㅏㅣ" + hashtagCount);
// postHashtags.add(PostHashtag.createPostHashtag(post, hashtag));
// postHashtags.add(PostHashtag.createPostHashtag(post, hashtag2));
// hashtagCount++;
// return postHashtags;
// }
//
// private List<Post> generatePostsForMember(int numberOfPosts, Member member) {
// List<Post> posts = new ArrayList<>();
// for (int i = 1; i <= numberOfPosts; i++) {
// SecureRandom secureRandom = new SecureRandom();
// int randomIndex = secureRandom.nextInt(lists.size());
// String randomHashtag = lists.get(randomIndex);
// String postTitle = randomHashtag + "_" + i;
// String postContents = randomHashtag + "_" + i;
// posts.add(Post.builder()
// .title(postTitle)
// .contents(postContents)
// .member(member)
// .build());
// }
// return posts;
// }
//
// private List<Member> generateMembers(int start, int count) {
// List<Member> members = new ArrayList<>();
// for (int i = start; i < start + count; i++) {
// members.add(Member.builder()
// .email(i + "user12321sd1244zzㅓ[email protected]")
// .password("12345678")
// .build());
// }
// return members;
// }
//}
13 changes: 7 additions & 6 deletions src/main/java/com/example/inflearn/service/post/PostPerpormance.java
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,6 @@ public PostDto postDetail(long postId) {

// 게시글 상세 내용 조회(해시태그, 댓글)
PostDto postDetail = postRepository.postDetail(postId);
postDetail.inputLikeCount(postId);
postDetail.inputHashtags(postRepository.postHashtagsBy(postDetail));
postDetail.inputComments(postRepository.commentsBy(postDetail));
return postDetail;
Expand Down Expand Up @@ -77,18 +76,20 @@ public PostDto postDetail3(long postId) {
@Transactional
public PostDto postDetail4(long postId) {
// 게시글 존재여부 검증
Post post = postRepository.findById(postId).orElseThrow(DoesNotExistPostException::new);
PopularPost popularPost = popularPostRepository.findByPostId(postId);

// 조회수 업데이트
PopularPost popularPost = popularPostRepository.findByPostId(post.getId());
// 인기글 테이블에 존재하지 않으면 update쿼리 발생, 존재하면 메모리에서 카운팅
if (popularPost == null) {
Post post = postRepository.findById(postId).orElseThrow(DoesNotExistPostException::new);
post.addViewCount();
PostDto postDetail = postRepository.postDetail(postId);
postDetail.inputHashtags(postRepository.postHashtagsBy(postDetail));
postDetail.inputComments(postRepository.commentsBy(postDetail));
return postDetail;
} else {
}

// 조회수 업데이트
// 인기글 테이블에 존재하지 않으면 update쿼리 발생, 존재하면 메모리에서 카운팅
else {
postMemoryService.addViewCount(popularPost.getPostId());
PostDto postDetail = postRepository.postDetail2(postId);
postDetail.inputLikeCount(postMemoryService.likeCount(postId));
Expand Down

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