Make sure your messages get to where they belong — SNS and SQS are AWS services which are often used in an event-driven architecture. A combination of those services offers the possibility to fan-out messages. Often there is a need to filter these messages before replicating them to multiple queues. Now I want to explain a way to achieve this…

Get started with Serverless, Lambda, and Docker — SAM is an open-source framework that you can use to build, test and deploy serverless applications on AWS. The main goal of this article is to familiarize you with AWS SAM so you can test your lambdas on your local machine without the need…

Amazon Textract is a service that automatically extracts text and data from scanned documents. Amazon Textract also identifies the contents of fields in forms and information stored in tables. In this demo project I’ll use Textract to read data and identify tables in PDF documents. These PDF documents represent invoices…

In this blog I’ll show how we can create a centralized logging solution where we collect all our Docker logs from different containers. Here we will use the well-known ELK stack (Elasticsearch, Logstash, Kibana). We will use docker-compose to deploy our ELK stack. Docker-compose offers us a solution to deploy…

Amazon EC2 Auto Scaling helps you ensure that you have the correct number of Amazon EC2 instances available to handle the load for your application. Amazon provides some default CloudWatch Metrics like CPUUtilization or DiskWriteOps but to scale based on Memory Utilization we are forced to create a custom metric. …

In this tutorial I’ll explain how you can implement a continuous Spring Boot deployment in Kubernetes. A small code change will trigger a new Docker image build and an instant deploy of a new pod in your cluster. This tutorial is executed on macOs. Jib is an open-source, fast and…

In this tutorial I’ll explain how you can setup a secure and high available virtual private cloud architecture and automate the setup using CloudFormation. We will host a basic high available application inside this VPC. We will also take the cost into account which means we will not make non-critical resources…

In this tutorial I’ll show how you can safely connect your local or on-premise Python application to AWS services like S3. In many cases the connection is made by just creating an IAM user and attach the correct policy. This will work but is not the recommended approach by AWS…

Nowadays most Cloud providers offer a managed solution to run a Kubernetes cluster in their environment. Although it’s very easy to install Kubernetes in the cloud, there is still need for non-cloud based Kubernetes solutions. In this blog I’ll explain how to install a Kubernetes Cluster on CentOS7 machines using…