Lambda IT Blog

Vor ein paar Monaten hat Tom Wenger seinen Lehrberuf an den Nagel gehängt. Es zog ihn zurück in die IT. Der gelernte Informatiker hat nach gut einem Jahr Selbststudium vor Kurzem sein Praktikum bei Lambda IT begonnen. Lesen Sie im Blog-Beitrag, wie es Tom beim Wiedereinstieg in der IT-Welt läuft.

Wir suchten in der Corona bedingten Homeoffice-Zeit eine Aktivität, welche den Kontakt untereinander fördert, aber auch einen Mehrwert für die Firma bringt. Brainstorming erfüllt beide Anforderungen und deshalb wagten wir uns an den Versuch, wöchentlich neue Ideen zu sammeln. Durch das Erproben von unterschiedlichen Techniken, Fragestellungen und Hilfsmitteln suchten wir die für uns geeignetste Vorgehensweise.

In the last few months, we migrated our infrastructure from self-managed Linux hosts to a cloud setup with Kubernetes due to new requirements. The reasons for the migration were diverse: We needed better scalability due to multi-tenancy and on the operations side a more modern tooling and CI/CD (configuration as code) integration for faster deployments. In the following blog post we write about our journey, the problems we met and the current state of our infrastructure.

When developing an artificial intelligence model to classify images, the biggest challenge is often interpreting the results. Using validation data is one way, but most of the time, the trained network remains a black box and we don't know, how exactly the result was obtained. Grad-CAM offers you a way to see what your AI sees.

In todays blog post we are looking at the problem of digitizing old topological maps that only exist on paper. Doing this by hand is very time consuming so we looked at solutions using computer vision and machine learning.

Augmented Reality (AR) is a compelling technology which is already being successfully deployed in many different sectors, like healthcare, manufacturing, games. The technology is mostly available in native mobile and desktop environments. In recent years AR has found its way into web applications. More and more devices and browsers support some AR features. The W3C https://www.w3.org/TR/webxr/ gradually adds and improves the specification of which features should be supported.

In this article I will show a possible architecture in order to reuse much of the test code and how to minimize code changes and the maintenance effort during development by holding the test data and selectors externally. Updated: 11.09.2020

Due to the high demand of virtual meetings for a lot of different reasons (people working at home, schools trying to plan the schedule, teachers teaching remotely or parents trying to coordinate groups) the main platforms like Microsoft Teams, Skype, etc. are being used a lot. Those platforms are mostly hosted far away and increase the traffic between the countries. But what if a meeting server could easily be created and hosted in the same country where it is going to be used? Or even better just in the intranet? This is possible by using an open source meeting server. In this Tutorial I will be presenting the Jitsi Server, a easy to use meeting server.

With Cypress, you can write E2E tests with a well-developed tooling. Cypress does not need browser drivers like Selenium, because the code is executed directly as Javascript in the browser. Therefore, the installation is quite short and no periodic updates of the drivers are needed.

OpenCv is a powerful computer vision library, giving you access to lots of basic and advanced image processing operations. Check out the documentation with an interactive playground and lots of examples. There is also a Javascript and WebAssembly build available, which means you can use OpenCv in a web application. Unfortunately, the default build is quite large at about 7.6Mb.

We are using Angular to build complex business application since the early version of AngularJS. While we love the framework and its rich ecosystem, we always struggled with the painful testing experience based on Jasmine and Karma. Our main pain points were the performance and the missing functionality to rerun only changed tests. With Jest, a testing platform from Facebook, these two points are solved in an elegant way and in addition it offers even more benefits.

Angular CLI is great for scaffolding components, services, pipes and so on. But often you find yourself changing a lot of stuff after scaffolding because of company coding conventions, best practices or simply because of your preferences.

The framework wars in the JavaScript world are well and truly alive, and it's great time to be a developer if we can manage to avoid the fatigue that comes with the constant churn of technology. If we are lucky enough to have the opportunity to spend time looking at a couple of frameworks then there is much we can learn from each of them.