perf(schedule): 월별 일정 Redis 캐시 + 쓰기 시 무효화

캘린더(최다 호출 공개 엔드포인트) getMonthlySchedules를 getOrSet으로
캐시(TTL 60s). 무효화는 모든 쓰기가 수렴하는 3개 meili 동기화 함수
(addOrUpdateSchedule/syncScheduleById/deleteSchedule)에 redis 전달 시
schedule:monthly:* 무효화. 관리자 라우트·봇 경로에서 redis 전달(즉시
반영), festival/누락 경로는 60s TTL로 자동 치유.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/src/routes/admin/concert.js

@@ -339,7 +339,7 @@ export default async function concertRoutes(fastify) {
             category_name: category.name || '',
             category_color: category.color || '',
             member_names: memberNames,
-          });
+          }, fastify.redis);
         }
       }
 
@@ -540,7 +540,7 @@ export default async function concertRoutes(fastify) {
             category_name: category.name || '',
             category_color: category.color || '',
             member_names: memberNames,
-          });
+          }, fastify.redis);
         }
       }
 

backend/src/routes/admin/events.js

@@ -206,8 +206,8 @@ export default async function eventsRoutes(fastify) {
       );
     }
 
-    // Meilisearch 동기화
+    // Meilisearch 동기화 + 월별 캐시 무효화
-    await syncScheduleById(meilisearch, db, scheduleId);
+    await syncScheduleById(meilisearch, db, scheduleId, fastify.redis);
 
     logActivity(db, {
       actor: 'admin', action: 'create', category: 'schedule',
@@ -291,7 +291,7 @@ export default async function eventsRoutes(fastify) {
       [finalIds.length > 0 ? JSON.stringify(finalIds) : null, id]
     );
 
-    await syncScheduleById(meilisearch, db, parseInt(id));
+    await syncScheduleById(meilisearch, db, parseInt(id), fastify.redis);
 
     logActivity(db, {
       actor: 'admin', action: 'update', category: 'schedule',

backend/src/routes/admin/variety.js

@@ -125,7 +125,7 @@ export default async function varietyRoutes(fastify) {
         category_name: category.name || '',
         category_color: category.color || '',
         member_names: memberNames,
-      });
+      }, redis);
 
       // 방송사 캐시 무효화
       await redis.del(BROADCASTER_KEY);
@@ -214,7 +214,7 @@ export default async function varietyRoutes(fastify) {
         await db.query('INSERT INTO schedule_members (schedule_id, member_id) VALUES ?', [values]);
       }
 
-      await syncScheduleById(meilisearch, db, parseInt(id));
+      await syncScheduleById(meilisearch, db, parseInt(id), redis);
       await redis.del(BROADCASTER_KEY);
       logActivity(db, { actor: 'admin', action: 'update', category: 'schedule', targetType: 'variety_schedule', targetId: parseInt(id), summary: `예능 일정 수정: ${title.trim()}` });
       return { success: true };

backend/src/routes/admin/x.js

@@ -152,7 +152,7 @@ export default async function xRoutes(fastify) {
         category_name: category.name || '',
         category_color: category.color || '',
         source_name: '',
-      });
+      }, fastify.redis);
 
       logActivity(db, { actor: 'admin', action: 'create', category: 'schedule', targetType: 'x_schedule', targetId: scheduleId, summary: `X 일정 생성: ${title}` });
       return { success: true, scheduleId };
@@ -251,8 +251,8 @@ export default async function xRoutes(fastify) {
             [fetchUsername, newContent, newImageUrls, row.schedule_id]
           );
 
-          // Meilisearch 동기화
+          // Meilisearch 동기화 + 월별 캐시 무효화
-          await syncScheduleById(meilisearch, db, row.schedule_id);
+          await syncScheduleById(meilisearch, db, row.schedule_id, fastify.redis);
 
           updated++;
           fastify.log.info(`리트윗 재수집 완료: schedule_id=${row.schedule_id}, post_id=${row.post_id}`);

backend/src/routes/admin/youtube.js

@@ -148,7 +148,7 @@ export default async function youtubeRoutes(fastify) {
         category_name: category.name || '',
         category_color: category.color || '',
         source_name: channelName || '',
-      });
+      }, fastify.redis);
 
       logActivity(db, { actor: 'admin', action: 'create', category: 'schedule', targetType: 'youtube_schedule', targetId: scheduleId, summary: `YouTube 일정 생성: ${title}` });
       return { success: true, scheduleId };
@@ -252,7 +252,7 @@ export default async function youtubeRoutes(fastify) {
         category_color: category.color || '',
         member_names: memberNames,
         source_name: channelName,
-      });
+      }, fastify.redis);
 
       logActivity(db, { actor: 'admin', action: 'update', category: 'schedule', targetType: 'youtube_schedule', targetId: parseInt(id), summary: `YouTube 일정 수정: ${schedules[0].title}` });
       return { success: true };

backend/src/routes/schedules/index.js

@@ -142,7 +142,7 @@ export default async function schedulesRoutes(fastify) {
         return badRequest(reply, 'search, startDate, 또는 year/month는 필수입니다.');
       }
 
-      return await getMonthlySchedules(db, parseInt(year), parseInt(month));
+      return await getMonthlySchedules(db, parseInt(year), parseInt(month), redis);
     } catch (err) {
       fastify.log.error(err);
       return serverError(reply, '일정 조회 실패');
@@ -271,8 +271,8 @@ export default async function schedulesRoutes(fastify) {
         await connection.query('DELETE FROM schedules WHERE id = ?', [id]);
       });
 
-      // Meilisearch에서도 삭제 (트랜잭션 외부, 실패해도 무시)
+      // Meilisearch에서도 삭제 + 월별 캐시 무효화 (트랜잭션 외부, 실패해도 무시)
-      await deleteSchedule(meilisearch, id);
+      await deleteSchedule(meilisearch, id, redis);
 
       logActivity(db, { actor: 'admin', action: 'delete', category: 'schedule', targetType: null, targetId: parseInt(id), summary: `일정 삭제: ${id}` });
       return { success: true };

backend/src/services/meilisearch/index.js

@@ -8,6 +8,17 @@
 import Inko from 'inko';
 import config, { CATEGORY_IDS } from '../../config/index.js';
 import { createLogger } from '../../utils/logger.js';
+import { invalidatePattern } from '../../utils/cache.js';
+
+// 일정 쓰기 시 월별 일정 캐시 무효화 (redis가 주어진 호출에 한함)
+async function invalidateMonthlyCache(redis) {
+  if (!redis) return;
+  try {
+    await invalidatePattern(redis, 'schedule:monthly:*');
+  } catch {
+    // 캐시 무효화 실패는 치명적이지 않음 (TTL로 자동 만료)
+  }
+}
 
 const inko = new Inko();
 const logger = createLogger('Meilisearch');
@@ -202,7 +213,7 @@ function formatScheduleResponse(hit) {
 /**
  * 일정 추가/업데이트 (데이터 직접 전달)
  */
-export async function addOrUpdateSchedule(meilisearch, schedule) {
+export async function addOrUpdateSchedule(meilisearch, schedule, redis = null) {
   try {
     const index = meilisearch.index(INDEX_NAME);
 
@@ -223,12 +234,13 @@ export async function addOrUpdateSchedule(meilisearch, schedule) {
   } catch (err) {
     logger.error(`문서 추가 오류: ${err.message}`);
   }
+  await invalidateMonthlyCache(redis);
 }
 
 /**
  * 일정 ID로 DB에서 조회 후 Meilisearch에 동기화
  */
-export async function syncScheduleById(meilisearch, db, scheduleId) {
+export async function syncScheduleById(meilisearch, db, scheduleId, redis = null) {
   try {
     const [rows] = await db.query(`
       SELECT
@@ -273,9 +285,11 @@ export async function syncScheduleById(meilisearch, db, scheduleId) {
     const index = meilisearch.index(INDEX_NAME);
     await index.addDocuments([document]);
     logger.info(`일정 동기화: ${scheduleId}`);
+    await invalidateMonthlyCache(redis);
     return true;
   } catch (err) {
     logger.error(`일정 동기화 오류 (${scheduleId}): ${err.message}`);
+    await invalidateMonthlyCache(redis);
     return false;
   }
 }
@@ -283,7 +297,7 @@ export async function syncScheduleById(meilisearch, db, scheduleId) {
 /**
  * 일정 삭제
  */
-export async function deleteSchedule(meilisearch, scheduleId) {
+export async function deleteSchedule(meilisearch, scheduleId, redis = null) {
   try {
     const index = meilisearch.index(INDEX_NAME);
     await index.deleteDocument(scheduleId);
@@ -291,6 +305,7 @@ export async function deleteSchedule(meilisearch, scheduleId) {
   } catch (err) {
     logger.error(`문서 삭제 오류: ${err.message}`);
   }
+  await invalidateMonthlyCache(redis);
 }
 
 /**

backend/src/services/schedule.js

@@ -500,7 +500,8 @@ const SCHEDULE_LIST_SQL = `
  * @param {number} month - 월
  * @returns {object} { schedules: [] }
  */
-export async function getMonthlySchedules(db, year, month) {
+export async function getMonthlySchedules(db, year, month, redis = null) {
+  const run = async () => {
   const startDate = `${year}-${String(month).padStart(2, '0')}-01`;
   const endDate = new Date(year, month, 0).toISOString().split('T')[0];
 
@@ -619,7 +620,15 @@ export async function getMonthlySchedules(db, year, month) {
     return 0;
   });
 
-  return { schedules };
+    return { schedules };
+  };
+
+  // 캘린더(최다 호출 공개 엔드포인트) 캐시. 쓰기 시 schedule:monthly:* 무효화 +
+  // 짧은 TTL 안전망으로 혹시 빠진 경로도 자동 치유.
+  if (redis) {
+    return getOrSet(redis, cacheKeys.scheduleMonthly(year, month), run, TTL.SHORT);
+  }
+  return run();
 }
 
 /**

backend/src/services/x/index.js

@@ -212,7 +212,7 @@ async function xBotPlugin(fastify, opts) {
         const scheduleId = await saveYoutubeFromTweet(video);
         if (scheduleId) {
           // Meilisearch 동기화
-          await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId);
+          await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId, fastify.redis);
           addedCount++;
         }
       } catch (err) {
@@ -254,7 +254,7 @@ async function xBotPlugin(fastify, opts) {
       const scheduleId = await saveTweet(tweet, bot.username);
       if (scheduleId) {
         // Meilisearch 동기화
-        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId);
+        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId, fastify.redis);
         const title = extractTitle(tweet.text);
         logActivity(fastify.db, {
           actor: bot.id,
@@ -296,7 +296,7 @@ async function xBotPlugin(fastify, opts) {
       const scheduleId = await saveTweet(tweet, bot.username);
       if (scheduleId) {
         // Meilisearch 동기화
-        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId);
+        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId, fastify.redis);
         addedCount++;
         // YouTube 링크 처리 (옵션이 켜져 있을 때만)
         if (bot.extractYoutube === true) {

backend/src/services/youtube/index.js

@@ -115,7 +115,7 @@ async function youtubeBotPlugin(fastify) {
 
     // Meilisearch 동기화
     if (scheduleId) {
-      await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId);
+      await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId, fastify.redis);
       fastify.log.info(`[${bot.id}] 다음 주 예정 일정 생성: ${nextDate} - ${title}`);
     }
 
@@ -141,7 +141,7 @@ async function youtubeBotPlugin(fastify) {
     });
 
     // Meilisearch 동기화
-    await syncScheduleById(fastify.meilisearch, fastify.db, scheduledEntry.schedule_id);
+    await syncScheduleById(fastify.meilisearch, fastify.db, scheduledEntry.schedule_id, fastify.redis);
     fastify.log.info(`[${bot.id}] 예정 일정 업데이트: ${video.title}`);
 
     return scheduledEntry.schedule_id;
@@ -159,7 +159,7 @@ async function youtubeBotPlugin(fastify) {
     });
 
     // Meilisearch에서도 삭제
-    await deleteSchedule(fastify.meilisearch, scheduleId);
+    await deleteSchedule(fastify.meilisearch, scheduleId, fastify.redis);
     fastify.log.info(`[${bot.id}] 예정 일정 삭제 (영상 미업로드)`);
 
     // 다음 주 예정 일정 생성
@@ -367,7 +367,7 @@ async function youtubeBotPlugin(fastify) {
 
       const scheduleId = await saveVideo(video, bot);
       if (scheduleId) {
-        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId);
+        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId, fastify.redis);
         logActivity(fastify.db, {
           actor: bot.id,
           action: 'create',
@@ -394,7 +394,7 @@ async function youtubeBotPlugin(fastify) {
       const scheduleId = await saveVideo(video, bot);
       if (scheduleId) {
         // Meilisearch 동기화
-        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId);
+        await syncScheduleById(fastify.meilisearch, fastify.db, scheduleId, fastify.redis);
         addedCount++;
       }
     }