Andrew Kaszubski
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ae7899a6fc
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feat(dataflows): add data caching layer with rate limit awareness - Fixes #12
Implements [DATA-11] Data caching layer - FRED rate limits with:
- CacheEntry: Generic cache entries with TTL and metadata
- CacheStats: Hit/miss/stale statistics tracking
- RateLimitState: Per-source rate limit tracking with exponential backoff
- MemoryCache: In-memory LRU cache backend
- FileCache: File-based JSON cache backend
- DataCache: Main cache with source-specific TTLs and stale-while-rate-limited
- @cached decorator: Function result caching
Features:
- Multi-backend support (memory, file)
- TTL-based expiration with configurable per-source defaults
- Stale-while-revalidate when rate limited
- Thread-safe operations throughout
- 41 tests covering all components
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2025-12-26 16:51:48 +11:00 |