라벨명 표시기능

2025-09-08 14:20:01 +09:00
parent 1eeda775ef
commit 2d07041110
20 changed files with 1415 additions and 497 deletions
--- a/backend-node/src/utils/cache.ts
+++ b/backend-node/src/utils/cache.ts
@@ -0,0 +1,143 @@
+/**
+ * 간단한 메모리 캐시 구현
+ * 테이블 타입관리 성능 최적화용
+ */
+
+interface CacheItem<T> {
+  data: T;
+  timestamp: number;
+  ttl: number; // Time to live in milliseconds
+}
+
+class MemoryCache {
+  private cache = new Map<string, CacheItem<any>>();
+  private readonly DEFAULT_TTL = 5 * 60 * 1000; // 5분
+
+  /**
+   * 캐시에 데이터 저장
+   */
+  set<T>(key: string, data: T, ttl: number = this.DEFAULT_TTL): void {
+    this.cache.set(key, {
+      data,
+      timestamp: Date.now(),
+      ttl,
+    });
+  }
+
+  /**
+   * 캐시에서 데이터 조회
+   */
+  get<T>(key: string): T | null {
+    const item = this.cache.get(key);
+
+    if (!item) {
+      return null;
+    }
+
+    // TTL 체크
+    if (Date.now() - item.timestamp > item.ttl) {
+      this.cache.delete(key);
+      return null;
+    }
+
+    return item.data as T;
+  }
+
+  /**
+   * 캐시에서 데이터 삭제
+   */
+  delete(key: string): boolean {
+    return this.cache.delete(key);
+  }
+
+  /**
+   * 패턴으로 캐시 삭제 (테이블 관련 캐시 일괄 삭제용)
+   */
+  deleteByPattern(pattern: string): number {
+    let deletedCount = 0;
+    const regex = new RegExp(pattern);
+
+    for (const key of this.cache.keys()) {
+      if (regex.test(key)) {
+        this.cache.delete(key);
+        deletedCount++;
+      }
+    }
+
+    return deletedCount;
+  }
+
+  /**
+   * 만료된 캐시 정리
+   */
+  cleanup(): number {
+    let cleanedCount = 0;
+    const now = Date.now();
+
+    for (const [key, item] of this.cache.entries()) {
+      if (now - item.timestamp > item.ttl) {
+        this.cache.delete(key);
+        cleanedCount++;
+      }
+    }
+
+    return cleanedCount;
+  }
+
+  /**
+   * 캐시 통계
+   */
+  getStats(): {
+    totalKeys: number;
+    expiredKeys: number;
+    memoryUsage: string;
+  } {
+    const now = Date.now();
+    let expiredKeys = 0;
+
+    for (const item of this.cache.values()) {
+      if (now - item.timestamp > item.ttl) {
+        expiredKeys++;
+      }
+    }
+
+    return {
+      totalKeys: this.cache.size,
+      expiredKeys,
+      memoryUsage: `${Math.round(JSON.stringify([...this.cache.entries()]).length / 1024)} KB`,
+    };
+  }
+
+  /**
+   * 전체 캐시 초기화
+   */
+  clear(): void {
+    this.cache.clear();
+  }
+}
+
+// 싱글톤 인스턴스
+export const cache = new MemoryCache();
+
+// 캐시 키 생성 헬퍼
+export const CacheKeys = {
+  TABLE_LIST: "table_list",
+  TABLE_COLUMNS: (tableName: string, page: number, size: number) =>
+    `table_columns:${tableName}:${page}:${size}`,
+  TABLE_COLUMN_COUNT: (tableName: string) => `table_column_count:${tableName}`,
+  WEB_TYPE_OPTIONS: "web_type_options",
+  COMMON_CODES: (category: string) => `common_codes:${category}`,
+} as const;
+
+// 자동 정리 스케줄러 (10분마다)
+setInterval(
+  () => {
+    const cleaned = cache.cleanup();
+    if (cleaned > 0) {
+      console.log(`[Cache] 만료된 캐시 ${cleaned}개 정리됨`);
+    }
+  },
+  10 * 60 * 1000
+);
+
+export default cache;