feat: auction history count 전용 캐시 추가

[dev-ant]

📋 상세 설명

• 경매 기록 Repository의 search(Page) 메서드를 searchContent(List)와 count(long)으로 분리
  • 이를 통해 auction-history:count Redis 캐시를 사용하여 count 결과를 독립적으로 캐싱할 수 있도록 변경
• 새로운 DB 인덱스 idx_ah_top_sub_date를 추가했습니다.
  • (item_top_category, item_sub_category, date_auction_buy DESC)
  • item_name 필터가 없는 count/search 쿼리를 최적화하기 위한 인덱스입니다.

📊 체크리스트

• PR 제목이 형식에 맞나요 e.g. feat: PR을 등록한다
• 코드가 테스트 되었나요
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• 이슈와 라벨이 등록되었나요 이슈 미등록

[github-actions]

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Build: success

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[Copilot]

Pull request overview

This PR introduces a dedicated Redis cache for auction history count queries, separating the count from the search results to avoid redundant database count queries across different pages of the same search. It also adds a new database index to optimize category+date range queries, and refactors the repository layer to split the previous search method (returning Page) into searchContent (returning List) and count (returning long).

Changes:

• Splits the auction history repository search(Page) method into searchContent(List) and count(long), enabling independent caching of count results via a new auction-history:count Redis cache
• Adds a new database index (idx_ah_top_sub_date) on (item_top_category, item_sub_category, date_auction_buy DESC) to optimize count/search queries without item_name filters
• Enables P6Spy SQL logging in application.yml (changed from false to true)

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
AuctionHistoryService.java	Adds manual count cache lookup/put via CacheManager, with resolveTotalCount and isCountCacheEligible methods
AuctionHistoryQueryDslRepository.java	Splits search into searchContent and count; extracts buildSearchPredicate as shared predicate builder
AuctionHistoryRepositoryPort.java	Updates port interface: replaces search(Page) with searchContent(List) and count(long)
AuctionHistoryRepositoryPortImpl.java	Updates port implementation to delegate to new QueryDsl methods
CacheNames.java	Adds AUCTION_HISTORY_COUNT constant
RedisConfig.java	Registers the new count cache with 2-hour TTL
CacheKeyBuilder.java	Adds buildAuctionHistoryCountKey and extracts resolveAuctionHistoryDateRange helper
AuctionHistoryCacheWarmupService.java	Evicts the new count cache alongside the search cache
V27__add_auction_history_category_date_index.sql	Adds database index for category+date queries
application.yml	Enables P6Spy logging
AuctionHistoryServiceTest.java	Updates test mocks to match new split API

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[Copilot]

The class Javadoc on line 20 lists only auction-history:search as being evicted, but the evictCaches() method now also evicts auction-history:count. The documentation should be updated to mention both caches to avoid confusion.

[codecov]

Codecov Report

❌ Patch coverage is 9.23077% with 59 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
.../persistence/AuctionHistoryQueryDslRepository.java	0.00%	25 Missing ⚠️
...ntil/the/eternity/common/util/CacheKeyBuilder.java	0.00%	16 Missing ⚠️
...ory/application/service/AuctionHistoryService.java	28.57%	9 Missing and 6 partials ⚠️
.../persistence/AuctionHistoryRepositoryPortImpl.java	0.00%	2 Missing ⚠️
...tion/service/AuctionHistoryCacheWarmupService.java	0.00%	1 Missing ⚠️

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