Show HN: Pragmatic Formal Modeling (Tutorial series with runnable examples) Formal modeling is a mathematical approach for designing and checking correctness of software systems. It focuses on standard software engineering and distributed systems problems of the sort programmers face every day. It takes a pragmatic engineering approach: each problem starts with UML diagrams, design decisions and sometimes even a requirements document. We work through how to get from a whiteboard design to an initial mathematical model. Then we refine it based on logical errors found by the model checker, which return with a level of detail unheard of in a standard debugger. Formal modeling is a skill every engineer should have in their toolbox. All the examples are downloadable, and their is a quick setup section at the start. Additionally, there is an explorable model error debugger build right into the website. https://ift.tt/Zi8d3up June 22, 2022 at 11:43PM
Show HN: Launch VM workloads securely and instantaneously, without VMs Hello HN! We've been working on a new hypervisor https://kwarantine.xyz that can run strongly isolated containers. This is still a WIP, but we wanted to give the community an idea about our approach, its benefits, and various use cases it unlocks. Today, VMs are used to host containers, and make up for the lack of strong security as well as kernel isolation in containers. This work adds this missing security piece in containers. We plan on launching a free private beta soon. Meanwhile, we'd deeply appreciate any feedback, and happy to answer any questions here or on our slack channel. Thanks! April 29, 2021 at 07:50AM
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