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Interdisciplinary Computing and Education for Real-World Solutions

An Interview with Prof. Vipin Kumar – 2025 Taylor L. Booth Education Award Recipient Prof. Vipin Kumar, a Regents Professor at the University of Minnesota, has wide-ranging research interests, which touch on several fields that have significant impact worldwide. His leadership as an educator in computer science and his authorship of foundational textbooks have shaped data mining and parallel computing curricula internationally. Below is an in-depth interview on the technologies he has had a han

Consistency over Availability: How rqlite Handles the CAP theorem

Consistency Over Availability: How rqlite Handles the CAP Theorem rqlite is a lightweight, user-friendly, open-source, distributed relational database. It’s written in Go and uses SQLite as its storage engine. When it comes to distributed systems the CAP theorem is an essential concept. It states that it’s impossible for a distributed database to simultaneously provide Consistency, Availability, and Partition tolerance. The challenge is in the face of a network partition, a database can only b

Fast and cheap bulk storage: using LVM to cache HDDs on SSDs

Since the inception of solid-state drives (SSDs), there has been a choice to make—either use SSDs for vastly superior speeds, especially with non-sequential read and writes (“random I/O”), or use legacy spinning rust hard disk drives (HDDs) for cheaper storage that’s a bit slow for sequential I/O and painfully slow for random I/O. The idea of caching frequently used data on SSDs and storing the rest on HDDs is nothing new—solid-state hybrid drives (SSHDs) embodied this idea in hardware form, wh