계승: v 1.5.1 (#81)

[GulSauce]

Summary by CodeRabbit

• Refactor
  • Migrated rate-limiting mechanism from external Redis to local in-process implementation, maintaining the same 60-second window and 75-request limit to ensure consistent service performance.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

This PR replaces a Redis-backed rate-limiting system with a local in-process alternative. The RedisUtil class and its rate-limiting method are removed from app/client/redis.py, while a new LocalRateLimiter class is introduced in app/util/rate_limiter.py to provide equivalent functionality using in-memory sliding-window rate limiting with asyncio synchronization.

Changes

Cohort / File(s)	Summary
Removed Redis module app/client/redis.py	Deleted entire module containing RedisUtil class with save_bedrock_content and check_bedrock_rate methods
New rate limiter app/util/rate_limiter.py	Added LocalRateLimiter class with window-based throttling using deque and asyncio.Lock; provides check_rate async method (60-second window, 75-request limit); created singleton rate_limiter instance
Updated service layer app/service/generate_service.py	Replaced RedisUtil import and instantiation with app.util.rate_limiter import; updated rate limiting call from check_bedrock_rate to rate_limiter.check_rate
Formatting app/service/explanation_service.py	Added empty line between function signature and body in generate_specific_explanation

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

• Verify no remaining references to RedisUtil exist elsewhere in codebase
• Confirm LocalRateLimiter behavior matches previous Redis-based implementation (same window duration and request limits)
• Validate asyncio.Lock synchronization prevents race conditions in concurrent scenarios
• Check that HTTPException 429 error handling is consistent across the change

Possibly related PRs

• [ICC-216] 로컬 레이트 리미터 #80: Implements identical refactoring—removes app/client/redis.py, replaces Redis-based rate limiting with LocalRateLimiter in app/util/rate_limiter.py, and updates app/service/generate_service.py to use the new local rate limiter.

Poem

🐰 Redis keys are hopped away,
Local limits come to stay!
In-memory, swift, and clean,
Fastest rate limiter I've seen! ✨

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch main

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📜 Recent review details

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between bde7db7 and 25fc590.

📒 Files selected for processing (4)

• app/client/redis.py (0 hunks)
• app/service/explanation_service.py (1 hunks)
• app/service/generate_service.py (2 hunks)
• app/util/rate_limiter.py (1 hunks)

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