jm + elb   11

acksin/seespot: AWS Spot instance health check with termination and clean up support
When a Spot Instance is about to terminate there is a 2 minute window before the termination actually happens. SeeSpot is a utility for AWS Spot instances that handles the health check. If used with an AWS ELB it also handles cleanup of the instance when a Spot Termination notice is sent.
aws  elb  spot-instances  health-checks  golang  lifecycle  ops 
may 2017 by jm
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
terraform  segment  architecture  aws  dynamodb  alb  elb  asg  ecs  docker 
march 2017 by jm
AWS Case Study: mytaxi
ECS, Docker, ELB, SQS, SNS, RDS, VPC, and spot instances. Pretty canonical setup these days...
The mytaxi app is also now able to predict daily and weekly spikes. In addition, it has gained the elasticity required to meet demand during special events. Herzberg describes a typical situation on New Year's Eve: “Shortly before midnight everyone needs a taxi to get to parties, and after midnight people want to go home. In past years we couldn't keep up with the demand this generated, which was around three and a half times as high as normal. In November 2015 we moved our Docker container architecture to Amazon ECS, and for the first time ever in December we were able to celebrate a new year in which our system could handle the huge number of requests without any crashes or interruptions—an accomplishment that we were extremely proud of. We had faced the biggest night on the calendar without any downtime.”
mytaxi  aws  ecs  docker  elb  sqs  sns  rds  vpc  spot-instances  ops  architecture 
august 2016 by jm
Green/Blue Deployments with AWS Lambda and CloudFormation - done right
Basically, use a Lambda to put all instances from an ASG into the ELB, then remove the old ASG
asg  elb  aws  lambda  deployment  ops  blue-green-deploys 
may 2016 by jm
AWS Certificate Manager – Deploy SSL/TLS-Based Apps on AWS
Very nifty -- autodeploys free wildcard certs to ELBs and Cloudfront. HN discussion thread is pretty good: https://news.ycombinator.com/item?id=10947186
ssl  tls  certificates  ops  aws  cloudfront  elb 
january 2016 by jm
Google Cloud Platform HTTP/HTTPS Load Balancing
GCE's LB product is pretty nice -- HTTP/2 support, and a built-in URL mapping feature (presumably based on how Google approach that problem internally, I understand they take that approach). I'm hoping AWS are taking notes for the next generation of ELB, if that ever happens
elb  gce  google  load-balancing  http  https  spdy  http2  urls  request-routing  ops  architecture  cloud 
october 2015 by jm
(SEC307) Building a DDoS-Resilient Architecture with AWS
good slides on a "web application firewall" proxy service, deployable as an auto-scaling EC2 unit
ec2  aws  ddos  security  resilience  slides  reinvent  firewalls  http  elb 
april 2015 by jm
Comparing Message Queue Architectures on AWS
A good overview -- I like the summary table. tl;dr:
If you are light on DevOps and not latency sensitive use SQS for job management and Kinesis for event stream processing. If latency is an issue, use ELB or 2 RabbitMQs (or 2 beanstalkds) for job management and Redis for event stream processing.
amazon  architecture  aws  messaging  queueing  elb  rabbitmq  beanstalk  kinesis  sqs  redis  kafka 
february 2015 by jm

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