Implement issues #320 #321 #322 #323 - webhooks, rewards leaderboard, quiz feedback, course waitlist - #440
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…hainLearnOfficial#322 ChainLearnOfficial#323 - webhooks, rewards leaderboard, quiz feedback, course waitlist - Issue ChainLearnOfficial#320: Webhook system with HMAC signing, exponential backoff retry logic, admin CRUD endpoints - Issue ChainLearnOfficial#321: Rewards leaderboard endpoint with caching, top 50 users by credits - Issue ChainLearnOfficial#322: Quiz feedback customization with optional correctFeedback/incorrectFeedback fields - Issue ChainLearnOfficial#323: Course enrollment waitlist management with position tracking Features: - Webhook dispatcher service with fire-and-forget pattern and HMAC-SHA256 signing - Background job for webhook retry processing with exponential backoff (max 24h) - Leaderboard caching with 5-minute TTL via Redis - Quiz custom feedback with fallback to generic responses - Waitlist position management with automatic reordering on removal - Comprehensive e2e tests for all four features Modified files: 30 total - Database migrations for webhooks and enrollment waitlist - Webhook admin API and background job processor - Rewards leaderboard service with caching - Quiz feedback fields and AI integration - Waitlist service and controller
…hainLearnOfficial#322 ChainLearnOfficial#323 - webhooks, rewards leaderboard, quiz feedback, course waitlist
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Closes #320, Closes #321, Closes #322, Closes #323
Summary
Implements four GitHub issues for the ChainLearn API:
Issue #320: Webhook System
Issue #321: Rewards Leaderboard
Issue #322: Quiz Feedback Customization
Issue #323: Course Enrollment Waitlist
Technical Details
Testing