Update bedrock serverless pdf chat

[Arjunnr-cb]

updated the markdown to 8.0 terminologies

[gemini-code-assist]

Summary of Changes

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This pull request refines the "bedrock serverless pdf chat" tutorial by updating its content to reflect current best practices and terminologies. The changes primarily focus on modernizing Python dependency management using uv, updating AWS Bedrock model references, and improving the Couchbase connection logic with enhanced error handling. These modifications aim to ensure the tutorial is accurate, easy to follow, and aligned with the latest ecosystem standards.

Highlights

• Dependency Management Shift: The tutorial now leverages uv for Python dependency management, replacing pip for installation and environment setup, aiming for faster and more reliable dependency resolution.
• Bedrock Model Updates: References to AWS Bedrock embedding models have been updated to Titan Text Embedding v2 and amazon.titan-embed-text-v2:0, reflecting current terminology and available models.
• Couchbase Connection Enhancement: The connect_to_couchbase function now includes robust error handling, logging, and applies the wan_development profile for improved connection stability and diagnostics.
• Documentation Clarity and Accuracy: Various textual updates, including corrected directory names, clarified connection string examples, and updated AWS stack names, enhance the tutorial's accuracy and readability.

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Changelog

• tutorial/markdown/python/bedrock-serverless-pdf-chat/bedrock-serverless-pdf-chat.md
  • Replaced the fts technology tag with vector search.
  • Updated Python prerequisites to recommend uv for dependency management instead of direct Python/SDK compatibility checks.
  • Changed the dependency installation command from pip install -r requirements.txt to uv sync.
  • Added a more explicit example for the Couchbase connection string format.
  • Corrected the directory name for AWS Lambdas from src/lambads to src/lambdas.
  • Standardized the naming convention for lambda names in instructions (e.g., chat and ingest).
  • Updated the recommended Bedrock embedding model from Titan Multimodal Embeddings G1 to Titan Text Embedding v2.
  • Corrected the environment variable CHAT_URL to reference CouchbaseChatStack instead of ChatBedrockStack.
  • Corrected the API_URL variable in eventing setup to reference CouchbaseBedrockStack instead of IngestBedrockStack.
  • Enhanced the connect_to_couchbase Python function with try-except blocks for error handling, logging, and the application of the wan_development profile.
  • Updated the model_id for BedrockEmbeddings in Python code snippets from amazon.titan-embed-image-v1 to amazon.titan-embed-text-v2:0.

Activity

• The author updated the markdown to 8.0 terminologies.

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[gemini-code-assist]

Code Review

This pull request updates the Bedrock serverless PDF chat tutorial, bringing it up to date with newer technologies and terminologies. Key changes include switching from pip to uv for dependency management, correcting the AWS Bedrock embedding model to a text-based one, and improving the database connection function. The updates enhance the tutorial's correctness and user experience. I have one minor suggestion to make a code snippet more complete.