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@devin-ai-integration devin-ai-integration bot commented Dec 3, 2025

Update README.md with comprehensive documentation

Summary

Complete rewrite of the README.md to provide clearer, more structured documentation for the Amazon DynamoDB Chat Sample application. The new README follows a standard documentation format with:

  • Clear purpose statement explaining this is a demo app for building real-time chat with DynamoDB and Chalice
  • Table of contents for easy navigation
  • Step-by-step local development instructions including DynamoDB Local setup
  • AWS deployment instructions using Chalice
  • Project structure overview
  • API endpoints documentation with curl examples
  • DynamoDB data model explanation (primary table and GSI)
  • Testing and linting instructions
  • Contributing guidelines and license information

Notable changes from the original README:

  • Removed the CodeBuild badge (was region-specific)
  • Removed reference to table_sample.png image
  • Changed provisioned throughput in examples from 1 to 5 RCU/WCU
  • Reformatted DynamoDB create-table commands for better readability

Updates since last revision

  • Added step 3 "Set up AWS credentials for DynamoDB Local" with example fake credentials - this was discovered during local testing as a required step for DynamoDB Local to accept AWS CLI commands

Local Testing Performed

The local development instructions were tested end-to-end:

  • DynamoDB Local started successfully
  • Chat table created with the documented command
  • Chalice server started on port 8080
  • API endpoints tested via curl (add comment, get latest, get all)
  • Web interface tested in browser - comments displayed and form submission worked

Local testing screenshot

Review & Testing Checklist for Human

  • Verify the AWS deployment instructions are accurate (cannot be tested without AWS credentials)
  • Confirm the removal of the CodeBuild badge and table_sample.png reference is acceptable
  • Verify all image references (demo.gif, demo_arch.png, table.png, GSI_sample.png) render correctly on GitHub

Recommended test plan: Follow the Quick Start > Local Development section step-by-step to verify the instructions work correctly on your machine.

Notes

- Add clear purpose statement about the chat sample application
- Add table of contents for easy navigation
- Add detailed quick start instructions for local development
- Add DynamoDB Local setup instructions
- Add AWS deployment instructions using Chalice
- Add project structure overview
- Add API endpoints documentation with examples
- Add DynamoDB data model documentation
- Add testing and linting instructions
- Add contribution guidelines and license information
- Include architecture diagram references

Co-Authored-By: mason.batchelor@cognition.ai <masonbatchelor81@gmail.com>
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🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

  • Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
  • Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

  • Disable automatic comment and CI monitoring

- Add step 3 to set up AWS credentials (can be fake values for local dev)
- Renumber subsequent steps accordingly
- This ensures users can successfully run DynamoDB Local commands

Co-Authored-By: mason.batchelor@cognition.ai <masonbatchelor81@gmail.com>
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