Solving the Core Challenge: Memory in a Stateless Environment
AWS Lambda + DynamoDB + API Gateway
Session ID: ...
Error:
Please check your API configuration
Latest API Response:
...
RESTful endpoint that routes HTTP requests to the Lambda function with zero server management and automatic scaling.
Serverless Python 3.11 function that executes the read-modify-write logic using the boto3 SDK for DynamoDB operations.
NoSQL database providing persistent, external memory with single-digit millisecond latency and automatic scaling.
Read State
Lambda uses boto3 to retrieve the current visit count from DynamoDB using your unique session_id as the primary key.
Modify State
The count is incremented by one, with proper Decimal type conversion to avoid JSON serialization bugs.
Write State
The updated count is persisted back to DynamoDB, maintaining state across serverless invocations.
Technology Stack
AWS Lambda (Python 3.11) • Amazon DynamoDB • API Gateway • AWS SAM
Deployed via Infrastructure as Code • CORS-Enabled • Session-Based State Management