![]() The solution of one application per VM solved the isolation problem for conflicting dependencies, but it wasted a lot of resources (CPU and memory). ![]() Before containers, if you had multiple applications deployed on the same virtual machine (VM), any changes to shared dependencies could cause strange things to happen-so the tendency was to have one application per virtual machine. What are containers?Ĭontainers effectively virtualize the host operating system (or kernel) and isolate an application’s dependencies from other containers running on the same machine. In this post, we’ll go through what they are and how you can learn more to advance to the next level. Understanding what problems containers, Docker, and Kubernetes solve is essential if you want to build modern cloud-native apps or if you want to modernize your existing legacy applications. Modern application infrastructure is being transformed by containers.
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