캐시 처리에 대한 표준화 객체 추가 및 학생 정원 수 관리 로직 추가#133
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…tQueryRepository 구현
…acheLoader, DefaultRedisCacheReader, DefaultRedisCacheWriter) 추가
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WalkthroughThis update introduces a new event-driven caching architecture for managing exam quotas. It abstracts Redis cache operations via new interfaces and implementations, centralizes cache logic in a refactored manager, and introduces event types, statuses, and listeners for quota-related actions. Several new DTOs, enums, service, and resolver classes are added, while legacy direct cache manipulation and pre-warm runner logic are removed. Additionally, several Redis cache interfaces and their default implementations are introduced to support the abstraction. Changes
Sequence Diagram(s)sequenceDiagram
participant ExamService
participant EventPublisher
participant ExamQuotaEventListener
participant ExamQuotaService
participant ExamQuotaEventResolver
participant ExamQuotaCacheManager
ExamService->>EventPublisher: publishEvent(ExamQuotaEvent)
EventPublisher-->>ExamQuotaEventListener: ExamQuotaEvent
ExamQuotaEventListener->>ExamQuotaService: handleExamQuotaEvent(event)
ExamQuotaService->>ExamQuotaEventResolver: resolve(event)
ExamQuotaEventResolver-->>ExamQuotaService: Consumer<ExamQuotaEvent>
ExamQuotaService->>ExamQuotaCacheManager: consumer.accept(event)
ExamQuotaCacheManager->>CacheLoader/CacheWriter/CacheReader: perform cache operation
Estimated code review effort🎯 4 (Complex) | ⏱️ ~40 minutes Poem
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Summary of Changes
Hello @polyglot-k, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request significantly refactors the application's caching and student quota management systems. It introduces a standardized approach to cache operations through new interfaces and an abstract manager, enhancing modularity. Concurrently, it implements an event-driven architecture for handling student exam quotas, which decouples business logic and improves scalability. Additionally, the persistence layer has been reorganized for better code structure.
Highlights
- Standardized Cache Operations: Introduced a new set of interfaces (
CacheLoader,CacheReader,CacheWriter,CacheEvictor) and an abstractKeyValueCacheManagerto standardize cache interactions, promoting a more modular and extensible caching layer. - Event-Driven Quota Management: Implemented an event-driven architecture for managing student exam quotas (max capacity and current applications). This involves new
ExamQuotaEventDTOs, anExamQuotaEventResolverfor dispatching actions, and anExamQuotaEventListenerfor consuming events. - Refactored Exam Quota Logic: The
ExamQuotaCacheManagerwas refactored to extend the newKeyValueCacheManagerand utilize the standardized cache interfaces. Its initialization logic was moved to theinitCachemethod of the base class, leading to the removal of theApplicationSchoolPreWarmRunner. - Decoupled Exam Service: The
ExamServicenow publishesExamQuotaEvents when registering new exams, decoupling it from direct manipulation of theExamQuotaCacheManagerand aligning with the new event-driven design. - Persistence Layer Restructuring: QueryDSL repository implementations (
ApplicationQueryRepositoryImpl,RefundQueryRepositoryImpl,StudentQueryRepositoryImpl) were moved from thedomain.adminpackage toinfra.persistence.jpa, improving the organization and separation of concerns within the persistence layer.
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Code Review
The code changes introduce a standardized object for cache processing and adds logic for managing student quotas. The caching mechanism has been refactored into a more robust, standardized, and event-driven architecture. The introduction of CacheReader, CacheWriter, and CacheLoader interfaces, along with the ExamQuotaEventResolver, greatly improves modularity and testability. There were a few critical issues identified in the new caching implementation that could lead to runtime errors or incorrect behavior, a potential business logic regression regarding application count decrements, and inconsistencies in the event type definitions. Additionally, suggestions were made to improve code clarity and robustness in the new event handling logic.
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java
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src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java
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src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaCacheManager.java
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src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java
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src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java
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src/main/java/life/mosu/mosuserver/application/exam/resolver/ExamQuotaEventResolver.java
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Actionable comments posted: 9
🔭 Outside diff range comments (4)
src/main/java/life/mosu/mosuserver/infra/persistence/jpa/ApplicationQueryRepositoryImpl.java (1)
54-77: Total-count for paging is wrong – returns page size, not overall rows
new PageImpl<>(content, pageable, content.size())setstotalElementsto the current page length, soPage.getTotalPages()will always be 1 and client UIs will behave incorrectly.
Run a separate count query (or usefetchResults()equivalent) to obtain the real total.- List<ApplicationListResponse> content = query.fetch().stream() + // Fetch paged content + List<ApplicationListResponse> content = query.fetch().stream() ... - return new PageImpl<>(content, pageable, content.size()); + // Fetch total count without pagination + Long total = queryFactory + .select(application.count()) + .from(examApplication) + .where( + buildNameCondition(filter.name()), + buildPhoneCondition(filter.phone()) + ) + .fetchOne(); + + return new PageImpl<>(content, pageable, total);Failing to fix this will break any consumer relying on correct pagination.
src/main/java/life/mosu/mosuserver/infra/persistence/jpa/RefundQueryRepositoryImpl.java (3)
58-60: Leaking PII & payment data in INFO logs
tuplecontainspaymentKey, phone numbers, and user names. Persisting these values atINFObreaches privacy and may violate compliance requirements. Reduce the level and/or mask sensitive fields:-log.info("tuple log : {} ", tuple); +log.debug("Refund export row – id={}, status={}, user={}", + tuple.get(refund.id), + tuple.get(refund.refundStatus), + tuple.get(profile.userName));If detailed inspection is still needed, consider temporarily enabling TRACE in non-prod environments.
65-82: Add deterministicorderByfor stable pagination
baseQuery()lacks anorderBy, meaning row order depends on the database execution plan. Paging without a stable sort can return duplicate / skipped records across pages. Add an explicit key, e.g.:.join(profile).on(profile.userId.eq(application.userId)) + .orderBy(refund.createdAt.desc()) // or refund.id.desc()Make sure the chosen column is indexed for performance.
38-50: Use a dedicated count query instead offetch().size()
CallingbaseQuery().fetch().size()will load every matching row into memory before counting, which is inefficient for large tables. Replace it with a singleCOUNT(*)query:Files to update:
- src/main/java/life/mosu/mosuserver/infra/persistence/jpa/RefundQueryRepositoryImpl.java, around line 40
Suggested diff:
- long total = baseQuery().fetch().size(); + long total = queryFactory + .select(refund.count()) + .from(refund) + .join(examApplication).on(refund.examApplicationId.eq(examApplication.id)) + .join(application).on(examApplication.applicationId.eq(application.id)) + .join(payment).on(examApplication.id.eq(payment.examApplicationId)) + .join(profile).on(profile.userId.eq(application.userId)) + .fetchOne();This issues a single
SELECT COUNT(*) …and avoids loading all rows into the JVM.
🧹 Nitpick comments (15)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java (1)
7-8: Consider simplifying the generic design.The generic type parameter
<T>appears unnecessary since cache eviction only requires the key, not the value type. TheCacheEvictor<String>interface only uses String keys.Consider simplifying to:
-public class DefaultRedisCacheEvictor<T> implements CacheEvictor<String> { - protected final RedisTemplate<String, T> redisTemplate; +public class DefaultRedisCacheEvictor implements CacheEvictor<String> { + protected final RedisTemplate<String, ?> redisTemplate;Unless the generic type is needed for consistency with other cache components in your architecture.
src/main/java/life/mosu/mosuserver/infra/config/SwaggerConfig.java (1)
12-19: Preferstatic final& constant-style name for immutable configuration data
serversis immutable, environment-agnostic configuration. Declaring itstatic final(and naming itSERVERS) makes this intent explicit, avoids creating the list on eachSwaggerConfiginstantiation (even though Spring builds it as a singleton), and aligns with Java constant-naming conventions.- private final List<Server> servers = List.of( + private static final List<Server> SERVERS = List.of( new Server().url("https://api.mosuedu.com/api/v1") .description("MOSU SERVER"), new Server().url("http://localhost:8080/api/v1") .description("Local Development Server"), new Server().url("http://192.168.35.174:8080/api/v1") .description("Custom Development Server") );Don’t forget to update the usage below:
- ).servers(servers); + ).servers(SERVERS);src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheWriter.java (1)
7-31: Consider adding error handling and consistency with other cache implementations.While the implementation is functionally correct, comparing with the other cache implementations in the relevant code snippets reveals some inconsistencies:
DefaultRedisCacheReaderwraps the result inOptional.of()which could cause NPE if the value is nullDefaultRedisCacheEvictorhas an emptyevictmethod implementation- No error handling is present in any of the implementations
Consider adding error handling and logging for better observability:
@Override public void writeOrUpdate(String key, T value) { + try { redisTemplate.opsForValue().set(key, value); + } catch (Exception e) { + log.error("Failed to write cache entry for key: {}", key, e); + throw e; + } } @Override public void increase(String key) { + try { redisTemplate.opsForValue().increment(key, 1); + } catch (Exception e) { + log.error("Failed to increment cache value for key: {}", key, e); + throw e; + } }Also consider adding validation for the
increase/decreaseoperations to ensure they're only used with appropriate numeric types.src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaStatus.java (1)
3-5: Consider adding documentation and reviewing package placement.The marker interface design is appropriate, but consider adding JavaDoc to explain its purpose in the event-driven system. Also, since this interface is used across multiple layers (presentation, application), consider moving it to a more neutral package like
domainorcommon.+/** + * Marker interface for exam quota event status types. + * Implemented by enums that represent different status values + * in the event-driven quota management system. + */ public interface ExamQuotaStatus { }src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheEvictor.java (1)
3-5: Add documentation and consider return type.The interface design is clean, but it needs JavaDoc to specify the contract. Consider whether the method should return a boolean to indicate if eviction was successful or if the key existed.
+/** + * Interface for evicting entries from cache. + * @param <K> the type of cache keys + */ public interface CacheEvictor<K> { + /** + * Evicts the cache entry associated with the given key. + * @param key the key whose entry is to be evicted + */ void evict(K key); }src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ApplicationStatus.java (1)
3-5: Clarify semantic differences between similar status values.The enum mixes entity lifecycle operations (CREATE/DELETE) with quantity modifications (INCREASE/DECREASE). This could lead to confusion about when to use each status. Consider adding JavaDoc to clarify the specific use cases for each value, or consider separating lifecycle and modification operations.
+/** + * Status values for application count events in the exam quota system. + * <ul> + * <li>CREATE - Initial creation of application count entry</li> + * <li>INCREASE - Increment existing application count</li> + * <li>DECREASE - Decrement existing application count</li> + * <li>DELETE - Remove application count entry entirely</li> + * </ul> + */ public enum ApplicationStatus implements ExamQuotaStatus { INCREASE, CREATE, DECREASE, DELETE }src/main/java/life/mosu/mosuserver/infra/persistence/redis/KeyValueCacheManager.java (1)
12-16: Consider making init() method protected and adding error handling.The private
init()method calling an abstract method could limit subclass control over initialization timing. Consider making it protected to allow subclasses to override if needed.- @PostConstruct - private void init(){ - initCache(); - } + @PostConstruct + protected void init(){ + try { + initCache(); + } catch (Exception e) { + // Log error and potentially rethrow as configuration exception + throw new IllegalStateException("Failed to initialize cache", e); + } + }src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEvent.java (2)
7-22: Clarify factory method naming and consider consistent approach.The factory method names "ofSingleCommand" and "ofMultipleCommand" don't clearly convey their purpose. Consider more descriptive names based on the presence/absence of status.
-@RequiredArgsConstructor(staticName = "ofSingleCommand") +@RequiredArgsConstructor(staticName = "withStatus") public class ExamQuotaEvent { // ... fields ... - public static ExamQuotaEvent ofMultipleCommand(ExamQuotaEventType type, String schoolName, Long value) { + public static ExamQuotaEvent withoutStatus(ExamQuotaEventType type, String schoolName, Long value) { return new ExamQuotaEvent(type, schoolName, value); }
9-12: Add field validation to prevent invalid events.Consider adding validation for required fields to fail fast on invalid event creation.
private ExamQuotaEvent(ExamQuotaEventType type, String schoolName, Long value, ExamQuotaStatus status) { this.type = Objects.requireNonNull(type, "Event type cannot be null"); this.schoolName = Objects.requireNonNull(schoolName, "School name cannot be null"); this.value = Objects.requireNonNull(value, "Value cannot be null"); this.status = status; // nullable by design }src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/MaxCapacityStatus.java (1)
3-5: LGTM! Clean enum implementation with good CRUD semantics.The enum constants clearly represent the lifecycle operations for maximum capacity management. Consider adding JavaDoc to document when each status should be used.
+/** + * Status values for maximum capacity events in the exam quota system. + */ public enum MaxCapacityStatus implements ExamQuotaStatus { + /** Create a new maximum capacity entry */ CREATE, + /** Update an existing maximum capacity entry */ UPDATE, + /** Delete a maximum capacity entry */ DELETE }src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheReader.java (1)
5-7: LGTM! Well-designed interface following best practices.The interface correctly uses
Optional<V>for null safety and has clear generic type parameters. Consider adding JavaDoc for better API documentation.+/** + * Interface for reading values from cache by key. + * + * @param <K> the type of cache keys + * @param <V> the type of cached values + */ public interface CacheReader<K,V> { + /** + * Reads a value from cache by key. + * + * @param key the cache key + * @return an Optional containing the cached value, or empty if not found + */ Optional<V> read(K key); }src/main/java/life/mosu/mosuserver/presentation/exam/ExamQuotaEventListener.java (1)
14-17: Consider adding error handling and logging for better observability.The event listener delegates directly without error handling. If the service throws an exception, it could disrupt event processing.
@ReactiveEventListener public void handleExamQuotaEvent(ExamQuotaEvent event) { - examQuotaService.handleExamQuotaEvent(event); + try { + log.debug("Handling exam quota event: type={}, school={}", event.getType(), event.getSchoolName()); + examQuotaService.handleExamQuotaEvent(event); + } catch (Exception e) { + log.error("Failed to handle exam quota event: {}", event, e); + // Consider whether to rethrow or handle gracefully + throw e; + } }Also add logger field:
private static final Logger log = LoggerFactory.getLogger(ExamQuotaEventListener.class);src/main/java/life/mosu/mosuserver/application/exam/resolver/ExamQuotaEventResolver.java (2)
26-31: Minor formatting: add space after comma- examQuotaCacheManager.setCurrentApplications(e.getSchoolName(),0L); + examQuotaCacheManager.setCurrentApplications(e.getSchoolName(), 0L);
32-37: Minor formatting: add space before opening brace- private Consumer<ExamQuotaEvent> resolveDeleteAll(ExamQuotaEvent event){ + private Consumer<ExamQuotaEvent> resolveDeleteAll(ExamQuotaEvent event) {src/main/java/life/mosu/mosuserver/infra/persistence/jpa/ApplicationQueryRepositoryImpl.java (1)
140-143: Remove unused local variable
EnumPath<Subject> subject = Expressions.enumPath(Subject.class, "subject");is never referenced and can be deleted to reduce noise.- EnumPath<Subject> subject = Expressions.enumPath(Subject.class, "subject");
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📒 Files selected for processing (24)
src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaCacheManager.java(1 hunks)src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaService.java(1 hunks)src/main/java/life/mosu/mosuserver/application/exam/ExamService.java(2 hunks)src/main/java/life/mosu/mosuserver/application/exam/resolver/ExamQuotaEventResolver.java(1 hunks)src/main/java/life/mosu/mosuserver/global/runner/ApplicationSchoolPreWarmRunner.java(0 hunks)src/main/java/life/mosu/mosuserver/infra/config/SwaggerConfig.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/jpa/ApplicationQueryRepositoryImpl.java(2 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/jpa/RefundQueryRepositoryImpl.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/jpa/StudentQueryRepositoryImpl.java(2 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheEvictor.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheLoader.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheReader.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheWriter.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheLoader.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheWriter.java(1 hunks)src/main/java/life/mosu/mosuserver/infra/persistence/redis/KeyValueCacheManager.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/ExamQuotaEventListener.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ApplicationStatus.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEvent.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaStatus.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/MaxCapacityStatus.java(1 hunks)
💤 Files with no reviewable changes (1)
- src/main/java/life/mosu/mosuserver/global/runner/ApplicationSchoolPreWarmRunner.java
🧰 Additional context used
🧬 Code Graph Analysis (4)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheLoader.java (3)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java (1)
RequiredArgsConstructor(6-13)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java (1)
Component(8-18)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheWriter.java (1)
Component(7-31)
src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaService.java (1)
src/main/java/life/mosu/mosuserver/application/exam/ExamService.java (1)
Service(15-50)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java (3)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java (1)
RequiredArgsConstructor(6-13)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheLoader.java (1)
Component(8-29)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheWriter.java (1)
Component(7-31)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheWriter.java (3)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java (1)
RequiredArgsConstructor(6-13)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java (1)
Component(8-18)src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheLoader.java (1)
Component(8-29)
🔇 Additional comments (20)
src/main/java/life/mosu/mosuserver/infra/persistence/jpa/StudentQueryRepositoryImpl.java (1)
1-10: Package & import realignment looks correctMoving the implementation under
infra.persistence.jpaand importing the domain‐levelStudentQueryRepositorycleanly separates interface (domain) from implementation (infrastructure) and keeps Spring scanning intact. No further action required.src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheWriter.java (5)
7-10: LGTM! Clean class structure with proper dependency injection.The class declaration follows Spring conventions with
@Componentfor automatic discovery and Lombok's@RequiredArgsConstructorfor clean dependency injection. The generic design allows for type-safe operations.
12-15: LGTM! Standard cache write operation.The
writeOrUpdatemethod properly delegates to Redis'ssetoperation, which handles both write and update scenarios correctly.
27-30: LGTM! Proper cache deletion implementation.The
deletemethod correctly delegates to Redis'sdeleteoperation for removing cache entries.
1-5: Missing import for CacheWriter interface.The class implements
CacheWriter<String, T>but the import for this interface is missing from the imports section.Add the missing import:
package life.mosu.mosuserver.infra.persistence.redis; import lombok.RequiredArgsConstructor; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.stereotype.Component; +import life.mosu.mosuserver.infra.persistence.redis.CacheWriter;Likely an incorrect or invalid review comment.
17-25: No action needed: increment/decrement only applied to Long
All uses ofDefaultRedisCacheWriterin the codebase occur viaExamQuotaCacheManagerwithT = Long. Theincrease/decreasecalls therefore always target numeric values, and no runtime‐type errors can occur. No additional type constraints or validation are required at this time.src/main/java/life/mosu/mosuserver/presentation/exam/ExamQuotaEventListener.java (2)
14-14: Verify reactive event listener usage aligns with processing requirements.Using
@ReactiveEventListenersuggests asynchronous processing, but the method implementation is synchronous. Ensure this aligns with your requirements for quota event processing.If quota events need to be processed synchronously (e.g., for immediate consistency), consider using
@EventListenerinstead. If async processing is desired, ensure the service layer is designed to handle concurrent events properly.
9-18: LGTM! Clean event listener implementation with good separation of concerns.The listener correctly delegates to the service layer and follows Spring best practices with constructor injection.
src/main/java/life/mosu/mosuserver/application/exam/ExamService.java (1)
27-31: Well-designed transition to event-driven architecture.The change from direct cache manipulation to event publishing is a good architectural improvement that:
- Decouples the service from cache implementation details
- Enables better separation of concerns
- Allows for more flexible event handling and potential future extensions
The use of the factory method
ofMultipleCommandwithLOADevent type appropriately initializes both current application count and max capacity for the school.src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java (1)
5-22: Well-designed enum with clear separation of concerns.The enum effectively combines event types with their valid statuses, providing a clean way to validate event-status combinations. The distinction between single and multiple commands is clear and helpful.
The use of bounded wildcards (
Set<? extends ExamQuotaStatus>) is appropriate and type-safe, allowing different status enum types while maintaining the common interface.src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheLoader.java (1)
8-29: Clean and well-implemented cache loader.The implementation follows good practices:
- Proper delegation in
loadAll()method- Correct null handling in
exists()method with defensive programming- Appropriate use of Redis operations for each method
- Clean generic typing and Spring integration
The separation of concerns is well-maintained with each method having a single responsibility.
src/main/java/life/mosu/mosuserver/application/exam/resolver/ExamQuotaEventResolver.java (3)
17-24: Good use of exhaustive switch expression!The switch expression without a default case ensures compile-time safety when new event types are added to the enum.
38-49: Excellent validation and error handling!Good use of pattern matching with instanceof to validate the status type before processing. The IllegalArgumentException with a clear message helps with debugging.
51-59: Consistent validation pattern!Good consistency with the validation approach used in resolveCurrentApplication. The combined handling of CREATE and UPDATE cases is appropriate since both set the value.
src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaCacheManager.java (3)
15-28: Excellent refactoring to use cache abstractions!The refactoring to extend
KeyValueCacheManagerand use injected cache interfaces significantly improves testability and separation of concerns.
30-38: Good use of Optional for null safety!Returning
Optional<Long>instead of nullableLongmakes the API clearer and forces callers to handle the absence of values explicitly.
84-95: Clean key prefix management!The inner enum pattern effectively encapsulates Redis key generation logic and ensures consistency across all cache operations.
src/main/java/life/mosu/mosuserver/infra/persistence/jpa/ApplicationQueryRepositoryImpl.java (2)
1-1: Confirm that component-scan still picks up this repository after the move
package life.mosu.mosuserver.infra.persistence.jpa;Moving the class out of
domain.adminmeans any Spring@ComponentScan/@MapperScanfilters that were narrowly scoped to the previous package must be updated; otherwise the@Repositorybean may not be registered and autowiring will fail at runtime.
Please double-check the root package settings in@SpringBootApplicationor explicit@ComponentScandeclarations.
14-14: Import addition looks correctThe explicit import for
ApplicationQueryRepositoryis required after the package move and resolves compilation. 👍src/main/java/life/mosu/mosuserver/infra/persistence/jpa/RefundQueryRepositoryImpl.java (1)
1-9: Package & import relocation looks correct
The move fromdomain.admintoinfra.persistence.jpacleanly separates persistence concerns from the domain layer; the additional interface import keeps compilation intact.
src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaCacheManager.java
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src/main/java/life/mosu/mosuserver/application/exam/ExamQuotaService.java
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src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheLoader.java
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src/main/java/life/mosu/mosuserver/infra/persistence/redis/CacheWriter.java
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| @Override | ||
| public void evict(String key) { | ||
| } |
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Critical: Implement the cache eviction logic.
The evict(String key) method is empty, which means cache entries won't actually be removed from Redis. This breaks the core functionality of a cache evictor and could lead to stale data and memory leaks.
Apply this diff to implement proper cache eviction:
@Override
public void evict(String key) {
+ redisTemplate.delete(key);
}🤖 Prompt for AI Agents
In
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheEvictor.java
at lines 10 to 12, the evict(String key) method is currently empty, so it does
not remove cache entries from Redis. Implement this method to connect to the
Redis client and call the appropriate command to delete the cache entry
associated with the given key, ensuring proper cache eviction and preventing
stale data.
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java
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src/main/java/life/mosu/mosuserver/infra/persistence/redis/KeyValueCacheManager.java
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src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEvent.java
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Actionable comments posted: 1
♻️ Duplicate comments (1)
src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java (1)
7-7: Add missing DECREASE status to maintain consistency with resolver.Based on the past review comment, the
CURRENT_APPLICATIONevent type is missing theDECREASEstatus that is handled inExamQuotaEventResolver. This inconsistency could lead to validation failures.- CURRENT_APPLICATION(Set.of(ApplicationStatus.INCREASE, ApplicationStatus.CREATE, ApplicationStatus.DELETE)), + CURRENT_APPLICATION(Set.of(ApplicationStatus.INCREASE, ApplicationStatus.CREATE, ApplicationStatus.DECREASE, ApplicationStatus.DELETE)),
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📒 Files selected for processing (2)
src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java(1 hunks)src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- src/main/java/life/mosu/mosuserver/infra/persistence/redis/DefaultRedisCacheReader.java
🔇 Additional comments (2)
src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java (2)
11-12: LGTM: Empty status sets are appropriate for batch operations.The
LOADandDELETE_ALLevent types correctly use empty status sets since they represent batch operations that don't require specific status validation.
19-21: LGTM: Validation logic is correctly implemented.The
isValidStatusmethod properly validates whether a given status is valid for the event type using the predefined valid status sets.
src/main/java/life/mosu/mosuserver/presentation/exam/dto/event/ExamQuotaEventType.java
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Refactor
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