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Despite the ubiquity of the MongoDB aggregation framework, it has been lacking a formal mathematical framework/specification. This paper aims to fix this gap by providing a theoretical foundation, and proposes MQuery. The formalization in MQuery is largely...

How does your computer create the illusion of running dozens of applications simultaneously when it only has a few physical cores?
Wait, I forgot the question because I am now checking my email. Ok, back to it...
The answer is CPU Virtualization. Chapters 6, 7 of OSTEP explore the engine behind this illusion, and how to balance raw performance with absolute control....

Back in 2005, when I first joined the SUNY Buffalo CSE department, the department secretary was a wonderful lady named Joann, who was over 60. She explained that my travel reimbursement process was simple: I'd just hand her the receipts after my trip...

I recently started reading "Operating Systems: Three Easy Pieces" (OSTEP) as part of Phil Eaton's offline reading group. We are tackling a very doable pace of 2 chapters a week.
The book is structured into three major parts: Virtualization, Concurrency, and Persistence. It is openly accessible to everyone for free, which is a tremendous contribution to computer science education by the Arpaci-Dusseau couple (Remzi and Andrea...