April 2017 Summaries

Code injection on Linux and macOS can be achieved using LD_PRELOAD and DYLD_INSERT_LIBRARIES. These mechanisms allow you to override system calls and shared libraries, changing the behavior of a program without modifying its source code. This technique has various uses such as manipulating time, making a process appear as root, or simulating changes in the filesystem's root directory. However, there are limitations and security concerns associated with this approach.

Microservices have been widely accepted as a best practice for about 5 years now, but many companies are still struggling to adopt them and not seeing all the benefits they expected. This is because microservices are often viewed through a highly technical lens, missing the organizational and process changes that bring true value. To successfully apply microservices, there are relatively few basic principles to guide you through the tooling and technology, which will be explored in this talk. The presentation will examine microservices from three perspectives: development practices, people impact, and technology requirements.

This tutorial guides developers on how to set up a fast, efficient development environment for Kubernetes using JavaScript microservices. It addresses two main challenges associated with building productive development experiments on Kubernetes: the native cloud design of applications and their complex microservices architecture that can be resource-intensive. The process involves setting up a sample microservice application consisting of three services, creating a local development environment, and using Telepresence for rapid development. Telepresence enables developers to see the results of code changes instantly without having to wait for a container image build, push to a repository, or deploy to a Kubernetes cluster.