The current customer I'm working for gave us several requirements, including: Build a microservice platform on AWS Be able to move from AWS to Azure, bare metal or whatever within 30 days The decision has been made and now we are developing and maintaining a k8s...
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A keen introduction to DynamoDB
The last couple of weeks two colleagues of mine and myself got the opportunity to build a Facebook Chatbot. Chatbots are the perfect fit for serverless architectures.
Serverless blue green deployments and canary releases with traffic shifting
Serverless computing is a hot topic. Especially AWS Lambda is gaining traction. It is being used as the foundation of Amazon's Alexa product-line and the basis of entire web sites like A Cloud Guru. We can rapidly build and release new business value to our customers...
Banking on AWS – Part 1: Amazon ECS
Im Rahmen unseres Innovation Labs "Bank in the Cloud" haben wir uns mit dem Open Source Kernbankensystem Apache Fineract CN beschäftigt. In einem einleitenden Beitrag sind bereits die Motivation und die Historie des Projekts erläutert worden. In diesem und den...
Serverless with AWS Lambda
This post is an introduction to Serverless computing - often called Functions-as-a-Service. I will explain, why this is indeed the Hot-Stuff(tm) and introduce you to AWS Lambda. We will build a completely serverless application that exposes 'Hello World' as a Lambda...
SenacorSlackDapp goes truffle & travis CI
What up! Since we recently had a Code&Play on Smart Contract development with Ethereum it was about time to move the tests for our lottery contract to the truffle development framework structure. And since we are hipster coders, we additionally configured Travis...
Broaden your horizon @ IoT Tech Expo Europe 2017
So, last week I visited the IoT Tech Expo Europe in Berlin[1]. The conference was running for two days offering a wide range of all kinds of IoT stuff - socializing time with a nice, cold beer included. To be more specific there were 3 main focus areas: IoT:...
In praise of Vavr’s Option
Null is sometimes considered the billion dollar mistake. One could argue about this forever, but certainly, null has lead to a lot of awful code. Most functional programming languages offer a concept called Option or Maybe to deal with the presence or absence of a...
Unit testing with Java 9, Jigsaw and JUnit
Java 9 is on it's way and with it - maybe - Project Jigsaw. Project Jigsaw adds modularization to Java, which will change the way we write Java code. The recent public review ballot for JSR #376 (the Java Platform Module System, or JPMS for short) however produced a...
Using Terraform for Cloud Deployments – Part 1
This post explores Terraform from a beginner's perspective. We'll look at the problem Terraform solves and what it's distinct features are. By using some rather simple examples we'll get a good feeling of how to use it in real life. We will build a running EC2...