Worklog Week 2

Week 2 Objectives: Serverless Architecture & Frontend Setup

• Understand Serverless architecture and benefits (cost, scalability)
• Research core services: Lambda, API Gateway, S3, DynamoDB
• Practice workshops and deployment with AWS SAM
• Design preliminary system architecture
• Align on UI/UX and setup frontend with Next.js + Shadcn/ui
• Research AI services integration

Weekly Tasks:

Week 2 Results:

1. Clean Architecture Knowledge:

• ✅ Understood Dependency Rule and layer separation
• ✅ Learned how to apply Clean Architecture to Python
• ✅ Created architecture diagram for Lexi project
• ✅ Clearly defined layers and dependencies
• ✅ Team meeting to discuss and align on code organization

2. Database Design:

• ✅ Complete DynamoDB schema with single-table design
• ✅ All access patterns covered
• ✅ GSI designed for complex queries
• ✅ Detailed documentation with examples
• ✅ Team discussion on DynamoDB best practices

3. API Design:

• ✅ Complete OpenAPI specification
• ✅ All endpoints clearly defined
• ✅ Request/Response schemas with validation
• ✅ Standardized error responses
• ✅ Review and adjustments based on team feedback

4. AI Services Knowledge:

• ✅ Understood how to use Amazon Bedrock Nova Lite
• ✅ Learned Transcribe for speech-to-text
• ✅ Learned Polly for text-to-speech
• ✅ Successfully tested the services
• ✅ Submitted support ticket for Bedrock permissions (awaiting response)

5. Networking & Learning:

• ✅ Participated in “AWS First Cloud AI Journey Community Day 2026” at Bitexco Financial Tower
• ✅ Learned about Platform Engineering and GenAIOps
• ✅ Explored trends in building AI applications on AWS
• ✅ Gained additional ideas and knowledge from experts
• ✅ Networked with AWS community and mentors
• ✅ Official FCAJ Bootcamp 2026 Kickoff

Challenges and Solutions:

Challenge 1: Single-table design complexity with many entity types

• Solution: Team discussion, reference best practices, use composite keys pattern

Challenge 2: Bedrock responses may be slow

• Solution: Design with streaming response and timeout handling

Challenge 3: Clean Architecture may make code complex

• Solution: Start with simplified version, only 3 core layers

Challenge 4: Not yet granted Bedrock permissions

• Solution: Submitted support ticket, will mock responses for parallel development

Next Week Plan (Sprint 1 - Week 3):

• Implement Authentication with Cognito
• Create User entity and use cases
• Implement DynamoDB repository layer
• Create Lambda handlers for Auth endpoints
• Setup API Gateway with Cognito authorizer
• Team meeting to review progress and adjust if needed