@ledgermem/cdk-constructs

AWS CDK constructs for deploying LedgerMem on AWS.

Install

npm install @ledgermem/cdk-constructs aws-cdk-lib constructs

Use

import { App, Stack } from "aws-cdk-lib";
import { LedgerMemCluster } from "@ledgermem/cdk-constructs";
import * as route53 from "aws-cdk-lib/aws-route53";

const app = new App();
const stack = new Stack(app, "Memory");

new LedgerMemCluster(stack, "LedgerMem", {
  domainName: "memory.example.com",
  hostedZone: route53.HostedZone.fromLookup(stack, "Z", { domainName: "example.com" }),
  desiredCount: 3,
});

That's it — cdk deploy and you have:

• ALB with TLS via ACM (DNS-validated)
• ECS Fargate service (ghcr.io/ledgermem/api:latest) behind the ALB
• Aurora PostgreSQL 16 with pgvector
• ElastiCache Redis
• API key in Secrets Manager
• DB credentials in Secrets Manager
• VPC with NAT gateway (or supply your own)

Constructs

LedgerMemCluster

Production-grade Fargate + Aurora + ElastiCache. See lib/ledgermem-cluster.ts for full props.

LedgerMemServerless

Lambda + Aurora Serverless v2 + HTTP API. For low-volume / dev use.

Cost note

LedgerMemCluster defaults provision ~$200–$300/mo at idle (1 NAT GW, 1 Aurora writer, 1 Aurora reader, 2 Fargate tasks, 1 Redis node). Use LedgerMemServerless for ~$30/mo idle.

License

MIT