Worklog Week 5

Week 5 Objectives: Sprint 2 - AI Tutor Integration

Integrate Amazon Bedrock Nova Micro for AI conversation, implement session/turn management, and build chat UI.

Main Tasks:

Results:

1. Bedrock Integration:

• ✅ Model: apac.amazon.nova-micro-v1:0 (inference profile)
• ✅ Converse API (synchronous, non-streaming)
• ✅ Retry: AWS SDK adaptive mode (exponential backoff + jitter)
• ✅ Cost tracking per turn

2. Prompt Engineering:

• ✅ Level-specific prompts (A1-C2)
• ✅ OptimizedPromptBuilder
• ✅ Token optimization: ~150 tokens/response
• ✅ Context window: sliding window (last 10 turns)

3. Session & Turn Management:

• ✅ Entities: Session, Turn (not Conversation/Message)
• ✅ Use cases: Create, Submit, Get, List
• ✅ DynamoDB storage
• ✅ Sliding window context (10 turns)

4. API Endpoints:

• ✅ POST /speaking/sessions - Create session
• ✅ POST /speaking/sessions/{id}/turns - Submit turn
• ✅ GET /speaking/sessions/{id} - Get detail
• ✅ GET /speaking/sessions - List sessions
• ✅ WebSocket for real-time updates

5. Chat UI:

• ✅ Clean interface (Shadcn/ui)
• ✅ Turn bubbles (user vs AI)
• ✅ Loading indicators
• ✅ Mobile responsive

Performance:

User Feedback:

“AI responses feel natural and contextual!” - Tester 1

“Responses are fast enough, no lag.” - Tester 2

“Love the clean interface.” - Tester 3

Next: Sprint 2 Part 2 - Flashcards, Scenarios, Stats