SST

Overview

SST (Serverless Stack) is a framework for building and deploying full-stack applications on AWS with high-level constructs for Lambda, API Gateway, DynamoDB, S3, and frontend frameworks. It features live local development connected to real AWS services, type-safe resource linking, and zero-config TypeScript support.

Instructions

• When defining infrastructure, use sst.config.ts with typed components like sst.aws.Function, sst.aws.Api, sst.aws.Bucket, and sst.aws.Dynamo.
• When connecting resources, use the link property on Functions to automatically grant IAM permissions and inject environment variables, and access linked resources via Resource.Name in handlers.
• When developing locally, use sst dev which runs Lambda locally with hot reload while connected to real AWS services (DynamoDB, S3, SQS), with support for VS Code breakpoint debugging.
• When deploying, use sst deploy --stage prod for named stages, sst deploy --stage pr-${PR_NUMBER} for preview environments, and sst remove --stage dev for teardown.
• When deploying frontends, use sst.aws.Nextjs, sst.aws.Remix, or sst.aws.Astro components for SSR on Lambda with static assets on S3 + CloudFront.
• When managing secrets, use sst secret set KEY value for encrypted, stage-specific secret storage.
• When organizing code, keep handlers thin in packages/functions/ as orchestrators, and place business logic in packages/core/.

Examples

Example 1: Build a serverless API with DynamoDB