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tk-factory-services/system1-factory/api/coverage/utils/queryOptimizer.js.html
Hyungi Ahn 550633b89d feat: 3-System 분리 프로젝트 초기 코드 작성 
TK-FB(공장관리+신고)와 M-Project(부적합관리)를 3개 독립 시스템으로
분리하기 위한 전체 코드 구조 작성.
- SSO 인증 서비스 (bcrypt + pbkdf2 이중 해시 지원)
- System 1: 공장관리 (TK-FB 기반, 신고 코드 제거)
- System 2: 신고 (TK-FB에서 workIssue 코드 추출)
- System 3: 부적합관리 (M-Project 기반)
- Gateway 포털 (path-based 라우팅)
- 통합 docker-compose.yml 및 배포 스크립트

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-09 14:40:11 +09:00

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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">// utils/queryOptimizer.js - 데이터베이스 쿼리 최적화 유틸리티
&nbsp;
const { getDb } = <span class="cstat-no" title="statement not covered" >require('../dbPool');</span>
&nbsp;
/**
* 페이지네이션 헬퍼
*/
const paginate = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(p</span>age = <span class="branch-0 cbranch-no" title="branch not covered" >1,</span> limit = <span class="branch-0 cbranch-no" title="branch not covered" >10)</span> =&gt; {</span>
const pageNum = <span class="cstat-no" title="statement not covered" >Math.max(1, parseInt(page));</span>
const limitNum = <span class="cstat-no" title="statement not covered" >Math.min(100, Math.max(1, parseInt(limit)));</span> // 최대 100개 제한
const offset = <span class="cstat-no" title="statement not covered" >(pageNum - 1) * limitNum;</span>
<span class="cstat-no" title="statement not covered" > return {</span>
limit: limitNum,
offset,
page: pageNum
};
};
&nbsp;
/**
* 페이지네이션된 쿼리 실행
*/
const executePagedQuery = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >as</span>ync (baseQuery, countQuery, params = <span class="branch-0 cbranch-no" title="branch not covered" >[],</span> options = <span class="branch-0 cbranch-no" title="branch not covered" >{})</span> =&gt; {</span>
const { page = <span class="branch-0 cbranch-no" title="branch not covered" >1,</span> limit = <span class="branch-0 cbranch-no" title="branch not covered" >10,</span> orderBy = <span class="branch-0 cbranch-no" title="branch not covered" >'id',</span> orderDirection = <span class="branch-0 cbranch-no" title="branch not covered" >'DESC' </span>} = <span class="cstat-no" title="statement not covered" >options;</span>
const { limit: limitNum, offset, page: pageNum } = <span class="cstat-no" title="statement not covered" >paginate(page, limit);</span>
<span class="cstat-no" title="statement not covered" > try {</span>
const db = <span class="cstat-no" title="statement not covered" >await getDb();</span>
// 전체 개수 조회
const [countResult] = <span class="cstat-no" title="statement not covered" >await db.execute(countQuery, params);</span>
const totalCount = <span class="cstat-no" title="statement not covered" >countResult[0]?.total || 0;</span>
// 데이터 조회 (ORDER BY와 LIMIT 추가)
const pagedQuery = <span class="cstat-no" title="statement not covered" >`${baseQuery} ORDER BY ${orderBy} ${orderDirection} LIMIT ${limitNum} OFFSET ${offset}`;</span>
const [rows] = <span class="cstat-no" title="statement not covered" >await db.execute(pagedQuery, params);</span>
// 페이지네이션 메타데이터 계산
const totalPages = <span class="cstat-no" title="statement not covered" >Math.ceil(totalCount / limitNum);</span>
<span class="cstat-no" title="statement not covered" > return {</span>
data: rows,
pagination: {
currentPage: pageNum,
totalPages,
totalCount,
limit: limitNum,
hasNextPage: pageNum &lt; totalPages,
hasPrevPage: pageNum &gt; 1
}
};
} catch (error) {
<span class="cstat-no" title="statement not covered" > throw new Error(`페이지네이션 쿼리 실행 오류: ${error.message}`);</span>
}
};
&nbsp;
/**
* 인덱스 최적화 제안
*/
const suggestIndexes = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >as</span>ync (tableName) =&gt; {</span>
<span class="cstat-no" title="statement not covered" > try {</span>
const db = <span class="cstat-no" title="statement not covered" >await getDb();</span>
// 현재 인덱스 조회
const [indexes] = <span class="cstat-no" title="statement not covered" >await db.execute(`SHOW INDEX FROM ${tableName}`);</span>
// 테이블 구조 조회
const [columns] = <span class="cstat-no" title="statement not covered" >await db.execute(`DESCRIBE ${tableName}`);</span>
const suggestions = <span class="cstat-no" title="statement not covered" >[];</span>
// 외래키 컬럼에 인덱스 제안
const foreignKeyColumns = <span class="cstat-no" title="statement not covered" >columns.filter(<span class="fstat-no" title="function not covered" >co</span>l =&gt; </span>
<span class="cstat-no" title="statement not covered" > col.Field.endsWith('_id') &amp;&amp; !indexes.some(<span class="fstat-no" title="function not covered" >id</span>x =&gt; <span class="cstat-no" title="statement not covered" >idx.Column_name === col.Field)</span></span>
);
<span class="cstat-no" title="statement not covered" > foreignKeyColumns.forEach(<span class="fstat-no" title="function not covered" >co</span>l =&gt; {</span>
<span class="cstat-no" title="statement not covered" > suggestions.push({</span>
type: 'INDEX',
column: col.Field,
reason: '외래키 컬럼에 인덱스 추가로 JOIN 성능 향상',
sql: `CREATE INDEX idx_${tableName}_${col.Field} ON ${tableName}(${col.Field});`
});
});
// 날짜 컬럼에 인덱스 제안
const dateColumns = <span class="cstat-no" title="statement not covered" >columns.filter(<span class="fstat-no" title="function not covered" >co</span>l =&gt; </span>
<span class="cstat-no" title="statement not covered" > (col.Type.includes('date') || col.Type.includes('timestamp')) &amp;&amp; </span>
!indexes.some(<span class="fstat-no" title="function not covered" >id</span>x =&gt; <span class="cstat-no" title="statement not covered" >idx.Column_name === col.Field)</span>
);
<span class="cstat-no" title="statement not covered" > dateColumns.forEach(<span class="fstat-no" title="function not covered" >co</span>l =&gt; {</span>
<span class="cstat-no" title="statement not covered" > suggestions.push({</span>
type: 'INDEX',
column: col.Field,
reason: '날짜 범위 검색 성능 향상',
sql: `CREATE INDEX idx_${tableName}_${col.Field} ON ${tableName}(${col.Field});`
});
});
<span class="cstat-no" title="statement not covered" > return {</span>
tableName,
currentIndexes: indexes.map(<span class="fstat-no" title="function not covered" >id</span>x =&gt; (<span class="cstat-no" title="statement not covered" >{</span>
name: idx.Key_name,
column: idx.Column_name,
unique: idx.Non_unique === 0
})),
suggestions
};
} catch (error) {
<span class="cstat-no" title="statement not covered" > throw new Error(`인덱스 분석 오류: ${error.message}`);</span>
}
};
&nbsp;
/**
* 쿼리 성능 분석
*/
const analyzeQuery = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >as</span>ync (query, params = <span class="branch-0 cbranch-no" title="branch not covered" >[])</span> =&gt; {</span>
<span class="cstat-no" title="statement not covered" > try {</span>
const db = <span class="cstat-no" title="statement not covered" >await getDb();</span>
// EXPLAIN 실행
const explainQuery = <span class="cstat-no" title="statement not covered" >`EXPLAIN ${query}`;</span>
const [explainResult] = <span class="cstat-no" title="statement not covered" >await db.execute(explainQuery, params);</span>
// 쿼리 실행 시간 측정
const startTime = <span class="cstat-no" title="statement not covered" >Date.now();</span>
<span class="cstat-no" title="statement not covered" > await db.execute(query, params);</span>
const executionTime = <span class="cstat-no" title="statement not covered" >Date.now() - startTime;</span>
// 성능 분석
const analysis = <span class="cstat-no" title="statement not covered" >{</span>
executionTime,
explainResult,
recommendations: []
};
// 성능 권장사항 생성
<span class="cstat-no" title="statement not covered" > explainResult.forEach(<span class="fstat-no" title="function not covered" >ro</span>w =&gt; {</span>
<span class="cstat-no" title="statement not covered" > if (row.type === 'ALL') {</span>
<span class="cstat-no" title="statement not covered" > analysis.recommendations.push({</span>
type: 'WARNING',
message: `테이블 전체 스캔 발생: ${row.table}`,
suggestion: '적절한 인덱스 추가 권장'
});
}
<span class="cstat-no" title="statement not covered" > if (row.rows &gt; 1000) {</span>
<span class="cstat-no" title="statement not covered" > analysis.recommendations.push({</span>
type: 'WARNING',
message: `많은 행 검사: ${row.rows}행`,
suggestion: 'WHERE 조건 최적화 또는 인덱스 추가 권장'
});
}
<span class="cstat-no" title="statement not covered" > if (row.Extra &amp;&amp; row.Extra.includes('Using filesort')) {</span>
<span class="cstat-no" title="statement not covered" > analysis.recommendations.push({</span>
type: 'INFO',
message: '파일 정렬 사용 중',
suggestion: 'ORDER BY 컬럼에 인덱스 추가 고려'
});
}
});
<span class="cstat-no" title="statement not covered" > return analysis;</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > throw new Error(`쿼리 분석 오류: ${error.message}`);</span>
}
};
&nbsp;
/**
* 배치 삽입 최적화
*/
const batchInsert = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >as</span>ync (tableName, data, batchSize = <span class="branch-0 cbranch-no" title="branch not covered" >100)</span> =&gt; {</span>
<span class="cstat-no" title="statement not covered" > if (!Array.isArray(data) || data.length === 0) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('삽입할 데이터가 없습니다.');</span>
}
<span class="cstat-no" title="statement not covered" > try {</span>
const db = <span class="cstat-no" title="statement not covered" >await getDb();</span>
const connection = <span class="cstat-no" title="statement not covered" >await db.getConnection();</span>
<span class="cstat-no" title="statement not covered" > await connection.beginTransaction();</span>
const columns = <span class="cstat-no" title="statement not covered" >Object.keys(data[0]);</span>
const placeholders = <span class="cstat-no" title="statement not covered" >columns.map(<span class="fstat-no" title="function not covered" >()</span> =&gt; <span class="cstat-no" title="statement not covered" >'?')</span>.join(', ');</span>
const insertQuery = <span class="cstat-no" title="statement not covered" >`INSERT INTO ${tableName} (${columns.join(', ')}) VALUES (${placeholders})`;</span>
let insertedCount = <span class="cstat-no" title="statement not covered" >0;</span>
// 배치 단위로 처리
<span class="cstat-no" title="statement not covered" > for (let i = <span class="cstat-no" title="statement not covered" >0;</span> i &lt; data.length; i += batchSize) {</span>
const batch = <span class="cstat-no" title="statement not covered" >data.slice(i, i + batchSize);</span>
<span class="cstat-no" title="statement not covered" > for (const row of batch) {</span>
const values = <span class="cstat-no" title="statement not covered" >columns.map(<span class="fstat-no" title="function not covered" >co</span>l =&gt; <span class="cstat-no" title="statement not covered" >row[col])</span>;</span>
<span class="cstat-no" title="statement not covered" > await connection.execute(insertQuery, values);</span>
<span class="cstat-no" title="statement not covered" > insertedCount++;</span>
}
}
<span class="cstat-no" title="statement not covered" > await connection.commit();</span>
<span class="cstat-no" title="statement not covered" > connection.release();</span>
<span class="cstat-no" title="statement not covered" > return {</span>
insertedCount,
batchSize,
totalBatches: Math.ceil(data.length / batchSize)
};
} catch (error) {
<span class="cstat-no" title="statement not covered" > throw new Error(`배치 삽입 오류: ${error.message}`);</span>
}
};
&nbsp;
/**
* 쿼리 캐시 키 생성
*/
const generateCacheKey = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(q</span>uery, params = <span class="branch-0 cbranch-no" title="branch not covered" >[],</span> prefix = <span class="branch-0 cbranch-no" title="branch not covered" >'query')</span> =&gt; {</span>
const paramString = <span class="cstat-no" title="statement not covered" >params.length &gt; 0 ? JSON.stringify(params) : '';</span>
const queryHash = <span class="cstat-no" title="statement not covered" >require('crypto')</span>
.createHash('md5')
.update(query + paramString)
.digest('hex');
<span class="cstat-no" title="statement not covered" > return `${prefix}:${queryHash}`;</span>
};
&nbsp;
/**
* 자주 사용되는 최적화된 쿼리들
*/
const optimizedQueries = <span class="cstat-no" title="statement not covered" >{</span>
// 작업자 목록 (페이지네이션)
getWorkersPaged: <span class="fstat-no" title="function not covered" >as</span>ync (page = <span class="branch-0 cbranch-no" title="branch not covered" >1,</span> limit = <span class="branch-0 cbranch-no" title="branch not covered" >10,</span> search = <span class="branch-0 cbranch-no" title="branch not covered" >'')</span> =&gt; {
let baseQuery = <span class="cstat-no" title="statement not covered" >`</span>
SELECT w.*, COUNT(dwr.id) as report_count
FROM workers w
LEFT JOIN daily_work_reports dwr ON w.worker_id = dwr.worker_id
`;
let countQuery = <span class="cstat-no" title="statement not covered" >'SELECT COUNT(*) as total FROM workers w';</span>
let params = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > if (search) {</span>
const searchCondition = <span class="cstat-no" title="statement not covered" >' WHERE w.worker_name LIKE ? OR w.position LIKE ?';</span>
<span class="cstat-no" title="statement not covered" > baseQuery += searchCondition + ' GROUP BY w.worker_id';</span>
<span class="cstat-no" title="statement not covered" > countQuery += searchCondition;</span>
<span class="cstat-no" title="statement not covered" > params = [`%${search}%`, `%${search}%`];</span>
} else {
<span class="cstat-no" title="statement not covered" > baseQuery += ' GROUP BY w.worker_id';</span>
}
<span class="cstat-no" title="statement not covered" > return executePagedQuery(baseQuery, countQuery, params, {</span>
page, limit, orderBy: 'w.worker_id', orderDirection: 'DESC'
});
},
// 프로젝트 목록 (페이지네이션)
getProjectsPaged: <span class="fstat-no" title="function not covered" >as</span>ync (page = <span class="branch-0 cbranch-no" title="branch not covered" >1,</span> limit = <span class="branch-0 cbranch-no" title="branch not covered" >10,</span> status = <span class="branch-0 cbranch-no" title="branch not covered" >'')</span> =&gt; {
let baseQuery = <span class="cstat-no" title="statement not covered" >`</span>
SELECT p.*, COUNT(dwr.id) as report_count,
SUM(dwr.work_hours) as total_hours
FROM projects p
LEFT JOIN daily_work_reports dwr ON p.project_id = dwr.project_id
`;
let countQuery = <span class="cstat-no" title="statement not covered" >'SELECT COUNT(*) as total FROM projects p';</span>
let params = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > if (status) {</span>
const statusCondition = <span class="cstat-no" title="statement not covered" >' WHERE p.status = ?';</span>
<span class="cstat-no" title="statement not covered" > baseQuery += statusCondition + ' GROUP BY p.project_id';</span>
<span class="cstat-no" title="statement not covered" > countQuery += statusCondition;</span>
<span class="cstat-no" title="statement not covered" > params = [status];</span>
} else {
<span class="cstat-no" title="statement not covered" > baseQuery += ' GROUP BY p.project_id';</span>
}
<span class="cstat-no" title="statement not covered" > return executePagedQuery(baseQuery, countQuery, params, {</span>
page, limit, orderBy: 'p.project_id', orderDirection: 'DESC'
});
},
// 일일 작업 보고서 (날짜 범위, 페이지네이션)
getDailyWorkReportsPaged: <span class="fstat-no" title="function not covered" >as</span>ync (startDate, endDate, page = <span class="branch-0 cbranch-no" title="branch not covered" >1,</span> limit = <span class="branch-0 cbranch-no" title="branch not covered" >10)</span> =&gt; {
const baseQuery = <span class="cstat-no" title="statement not covered" >`</span>
SELECT dwr.*, w.worker_name, p.project_name,
wt.name as work_type_name, wst.name as work_status_name,
et.name as error_type_name, u.name as created_by_name
FROM daily_work_reports dwr
LEFT JOIN workers w ON dwr.worker_id = w.worker_id
LEFT JOIN projects p ON dwr.project_id = p.project_id
LEFT JOIN work_types wt ON dwr.work_type_id = wt.id
LEFT JOIN work_status_types wst ON dwr.work_status_id = wst.id
LEFT JOIN error_types et ON dwr.error_type_id = et.id
LEFT JOIN users u ON dwr.created_by = u.user_id
WHERE dwr.report_date BETWEEN ? AND ?
`;
const countQuery = <span class="cstat-no" title="statement not covered" >`</span>
SELECT COUNT(*) as total
FROM daily_work_reports dwr
WHERE dwr.report_date BETWEEN ? AND ?
`;
<span class="cstat-no" title="statement not covered" > return executePagedQuery(baseQuery, countQuery, [startDate, endDate], {</span>
page, limit, orderBy: 'dwr.report_date', orderDirection: 'DESC'
});
}
};
&nbsp;
/**
* 데이터베이스 성능 모니터링
*/
const getPerformanceStats = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >as</span>ync () =&gt; {</span>
<span class="cstat-no" title="statement not covered" > try {</span>
const db = <span class="cstat-no" title="statement not covered" >await getDb();</span>
// 연결 상태 조회
const [connections] = <span class="cstat-no" title="statement not covered" >await db.execute('SHOW STATUS LIKE "Threads_connected"');</span>
const [maxConnections] = <span class="cstat-no" title="statement not covered" >await db.execute('SHOW VARIABLES LIKE "max_connections"');</span>
// 쿼리 캐시 상태 (MySQL 8.0 이전 버전)
let queryCacheStats = <span class="cstat-no" title="statement not covered" >null;</span>
<span class="cstat-no" title="statement not covered" > try {</span>
const [qcStats] = <span class="cstat-no" title="statement not covered" >await db.execute('SHOW STATUS LIKE "Qcache%"');</span>
<span class="cstat-no" title="statement not covered" > queryCacheStats = qcStats;</span>
} catch (error) {
// MySQL 8.0+에서는 쿼리 캐시가 제거됨
}
// 슬로우 쿼리 로그 상태
const [slowQueries] = <span class="cstat-no" title="statement not covered" >await db.execute('SHOW STATUS LIKE "Slow_queries"');</span>
<span class="cstat-no" title="statement not covered" > return {</span>
connections: {
current: parseInt(connections[0]?.Value || 0),
max: parseInt(maxConnections[0]?.Value || 0)
},
queryCacheStats,
slowQueries: parseInt(slowQueries[0]?.Value || 0),
timestamp: new Date().toISOString()
};
} catch (error) {
<span class="cstat-no" title="statement not covered" > throw new Error(`성능 통계 조회 오류: ${error.message}`);</span>
}
};
&nbsp;
<span class="cstat-no" title="statement not covered" >module.exports = {</span>
paginate,
executePagedQuery,
suggestIndexes,
analyzeQuery,
batchInsert,
generateCacheKey,
optimizedQueries,
getPerformanceStats
};
&nbsp;</pre></td></tr></table></pre>
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