Segment.com on cost savings using DynamoDB, autoscaling and ECS
great post. 1. DynamoDB hot shards were a big problem — and it is terrible that diagnosing this requires a ticket to AWS support! This heat map should be a built-in feature. 2. ECS auto-scaling gets a solid thumbs-up. 3. Switching from ELB to ALB lets them set ports dynamically for individual ECS Docker containers, and then pack as many containers as will fit on a giant EC2 instance. 4. Terraform modules to automate setup and maintainance of ECS, autoscaling groups, and ALBs
(tags: terraform segment architecture aws dynamodb alb elb asg ecs docker)
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LocalStack provides an easy-to-use test/mocking framework for developing Cloud applications. Currently, the focus is primarily on supporting the AWS cloud stack. LocalStack spins up the following core Cloud APIs on your local machine: API Gateway at http://localhost:4567; Kinesis at http://localhost:4568; DynamoDB at http://localhost:4569; DynamoDB Streams at http://localhost:4570; Elasticsearch at http://localhost:4571; S3 at http://localhost:4572; Firehose at http://localhost:4573; Lambda at http://localhost:4574; SNS at http://localhost:4575; SQS at http://localhost:4576 Additionally, LocalStack provides a powerful set of tools to interact with the cloud services, including a fully featured KCL Kinesis client with Python binding, simple setup/teardown integration for nosetests, as well as an Environment abstraction that allows to easily switch between local and remote Cloud execution.