79895d8211
- Completed Actions 2.5.1.9 and 2.5.1.10: Verified features already exist - Created CACHE_FEATURES_VERIFICATION.md documenting verification - Action 2.5.1.9: Cache invalidation already implemented via invalidateStateAfterMutation in response interceptor (line 493) - Action 2.5.1.10: Cache size limits already implemented (maxSize=100, FIFO eviction) - Both features working correctly, no changes needed
108 lines
3.2 KiB
Markdown
108 lines
3.2 KiB
Markdown
# Cache Features Verification
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**Date**: 2025-01-27
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**Actions**: 2.5.1.9, 2.5.1.10 - Verify cache invalidation and size limits
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**Status**: ✅ Complete (Already Implemented)
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## Overview
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This document verifies that cache invalidation and size limits are already implemented in the response cache utility.
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## Action 2.5.1.9: Cache Invalidation on Mutations
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### Verification
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**Status**: ✅ **ALREADY IMPLEMENTED**
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**Implementation Location**: `apps/web/src/services/api/client.ts:486-494`
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**Code**:
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```typescript
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// FE-API-017: Invalidate cache on mutations
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// FE-STATE-004: Invalidate state after mutations
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if (isMutation) {
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const url = response.config.url || '';
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const method = response.config.method || 'POST';
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// Use centralized invalidation system
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invalidateStateAfterMutation(url, method);
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}
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```
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**Behavior**:
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- ✅ Automatically called for all mutations (POST, PUT, PATCH, DELETE)
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- ✅ Uses centralized `invalidateStateAfterMutation` function
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- ✅ Invalidates cache based on resource type and ID
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- ✅ Pattern-based invalidation (e.g., `/tracks/*`)
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**Invalidation Logic** (`apps/web/src/utils/stateInvalidation.ts`):
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- `invalidateStateAfterMutation` determines resource type from URL
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- Calls `invalidateState` with appropriate resource type
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- `invalidateCacheByResource` invalidates matching cache entries
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- Supports both pattern-based and specific resource invalidation
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**Example**:
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- POST `/tracks` → Invalidates `/tracks` and `/library/tracks` patterns
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- PUT `/tracks/123` → Invalidates `/tracks/123` specifically
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- DELETE `/playlists/456` → Invalidates `/playlists/456` specifically
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## Action 2.5.1.10: Cache Size Limits
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### Verification
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**Status**: ✅ **ALREADY IMPLEMENTED**
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**Implementation Location**: `apps/web/src/services/responseCache.ts:46, 240-246, 349`
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**Configuration**:
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```typescript
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private maxSize = 100; // Maximum cache size
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// In constructor
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this.maxSize = config.maxSize || this.maxSize;
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// Default instance
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export const responseCache = new ResponseCacheService({
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maxSize: 100,
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// ...
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});
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```
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**Eviction Logic** (lines 240-246):
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```typescript
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// Check cache size limit
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if (this.cache.size >= this.maxSize && !this.cache.has(key)) {
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// Remove oldest entry (simple FIFO)
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const firstKey = this.cache.keys().next().value;
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if (firstKey) {
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this.cache.delete(firstKey);
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}
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}
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```
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**Behavior**:
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- ✅ Maximum cache size: 100 entries
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- ✅ FIFO eviction: Oldest entry removed when limit reached
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- ✅ Only evicts when adding new entry (not when updating existing)
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- ✅ Configurable via constructor options
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**Additional Features**:
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- Periodic cleanup removes expired entries (every minute)
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- `cleanup()` method removes entries older than TTL
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- `getStats()` method provides cache statistics
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## Summary
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Both features are **already fully implemented**:
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1. ✅ **Cache Invalidation**: Automatic invalidation on mutations via `invalidateStateAfterMutation`
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2. ✅ **Cache Size Limits**: 100 entry limit with FIFO eviction
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**No changes needed** - Actions 2.5.1.9 and 2.5.1.10 are complete.
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## Validation
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✅ Cache invalidation verified in response interceptor
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✅ Cache size limits verified in ResponseCacheService
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✅ FIFO eviction logic verified
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✅ Both features working as expected
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