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CDK Constructs for AWS ECS

Project description

CDK Construct library for higher-level ECS Constructs


Stability: Experimental

This is a developer preview (public beta) module. Releases might lack important features and might have future breaking changes.

This API is still under active development and subject to non-backward compatible changes or removal in any future version. Use of the API is not recommended in production environments. Experimental APIs are not subject to the Semantic Versioning model.


This library provides higher-level ECS constructs which follow common architectural patterns. It contains:

  • Load Balanced Services
  • Queue Processing Services
  • Scheduled Tasks (cron jobs)

Load Balanced Services

To define a service that is behind a load balancer, instantiate one of the following:

  • LoadBalancedEc2Service
const loadBalancedEcsService = new ecsPatterns.LoadBalancedEc2Service(stack, 'Service', {
  cluster,
  memoryLimitMiB: 1024,
  image: ecs.ContainerImage.fromRegistry('test'),
  desiredCount: 2,
  environment: {
    TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
    TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value"
  }
});
  • LoadBalancedFargateService
const loadBalancedFargateService = new ecsPatterns.LoadBalancedFargateService(stack, 'Service', {
  cluster,
  memoryLimitMiB: 1024,
  cpu: 512,
  image: ecs.ContainerImage.fromRegistry("amazon/amazon-ecs-sample"),
});

Queue Processing Services

To define a service that creates a queue and reads from that queue, instantiate one of the following:

  • QueueProcessingEc2Service
const queueProcessingEc2Service = new QueueProcessingEc2Service(stack, 'Service', {
  cluster,
  memoryLimitMiB: 1024,
  image: ecs.ContainerImage.fromRegistry('test'),
  command: ["-c", "4", "amazon.com"],
  enableLogging: false,
  desiredTaskCount: 2,
  environment: {
    TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
    TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value"
  },
  queue,
  maxScalingCapacity: 5
});
  • QueueProcessingFargateService
const queueProcessingFargateService = new QueueProcessingFargateService(stack, 'Service', {
  cluster,
  memoryLimitMiB: 512,
  image: ecs.ContainerImage.fromRegistry('test'),
  command: ["-c", "4", "amazon.com"],
  enableLogging: false,
  desiredTaskCount: 2,
  environment: {
    TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
    TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value"
  },
  queue,
  maxScalingCapacity: 5
});

Scheduled Tasks

To define a task that runs periodically, instantiate an ScheduledEc2Task:

// Instantiate an Amazon EC2 Task to run at a scheduled interval
const ecsScheduledTask = new ScheduledEc2Task(this, 'ScheduledTask', {
  cluster,
  image: ecs.ContainerImage.fromRegistry("amazon/amazon-ecs-sample"),
  scheduleExpression: 'rate(1 minute)',
  environment: [{ name: 'TRIGGER', value: 'CloudWatch Events' }],
  memoryLimitMiB: 256
});

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