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cdk-redisdb

v0.0.39

Published

Simple & featureful Redis on AWS - Elasticache Replication Group & MemoryDB with a unified API

Downloads

2,262

Readme

cdk-redisdb

An AWS CDK construct which spins up an Elasticache Replication Group, or a MemoryDB Cluster.

Usage (TypeScript/JavaScript)

Install via npm:

$ npm i cdk-redisdb

Add an Elasticache Replication Group to your CDK stack:

import { RedisDB } from 'cdk-redisdb'

new RedisDB(this, 'redisdb-repl-group', {
  nodes: 1,
  nodeType: 'cache.m6g.large',
  engineVersion: '6.2',
})

Add a MemoryDB Cluster to your CDK stack:

import { MemoryDB } from 'cdk-redisdb'

new MemoryDB(this, 'memorydb-repl-group', {
  nodes: 1,
  nodeType: 'db.t4g.small',
  engineVersion: '6.2',
})

Specify a VPC rather than having a VPC auto-created for you:

import { MemoryDB } from 'cdk-redisdb'

let vpc = new ec2.Vpc(this, 'Vpc', {
  subnetConfiguration: [
    {
      cidrMask: 24,
      name: 'public1',
      subnetType: ec2.SubnetType.PUBLIC,
    },
    {
      cidrMask: 24,
      name: 'isolated1',
      subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
    },
  ],
})

new RedisDB(this, 'redis-use-existing-vpc', {
  existingVpc: vpc,
})

Add 2 replicas per node, and add shards to cluster when memory exceeds 60%.

import { RedisDB } from 'cdk-redisdb'

new RedisDB(this, 'redisdb-repl-group', {
  nodes: 1,
  replicas: 2, // 2 replicas per node
  nodeType: 'cache.m6g.large',
  memoryAutoscalingTarget: 60,
  // nodesCpuAutoscalingTarget
})
import { RedisDB } from 'cdk-redisdb'

let vpc = new ec2.Vpc(this, 'Vpc', {
  subnetConfiguration: [
    {
      cidrMask: 24,
      name: 'public1',
      subnetType: ec2.SubnetType.PUBLIC,
    },
    {
      cidrMask: 24,
      name: 'isolated1',
      subnetType: ec2.SubnetType.PRIVATE,
    },
  ],
})

const ecSecurityGroup = new ec2.SecurityGroup(this, 'elasticache-sg', {
  vpc: vpc,
  description: 'SecurityGroup associated with the ElastiCache Redis Cluster',
  allowAllOutbound: false,
});

new RedisDB(this, 'redisdb-repl-group', {
  nodes: 1,
  nodeType: 'cache.m6g.large',
  nodesCpuAutoscalingTarget: 50,
  existingVpc: vpc,
  existingSecurityGroup: ecSecurityGroup,
})

Features in progress:

  • MemoryDB ACLs (commented out to avoid default bad practices, read comments to understand the CloudFormation)

Features to come:

  • Replication Groups with cluster mode disabled (for those using multiple databases)
  • Improved API - sane choice of props