Other Thoughts
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Metastable Failures in Distributed Systems
Metastability is a stable state of a dynamical system other than the system’s state of least energy. – Wikipedia Distributed systems often fail spectacularly and unpredictably. They are a cause for a headache and sleepless on-call nights for way too many engineers. And this is despite lots of efforts to understand the failures, and all
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Looking at State and Operational Consistency
Recently I rediscovered the “The many faces of consistency” paper by Marcos Aguilera and Doug Terry. When I first read the paper two years ago, I largely dismissed it as trivial, and, oh boy, now I realized how wrong I was at that time. It is easy to read for sure, and may appear as
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Python, Numpy and a Programmer Error: Story of a Bizarre Bug
While recently working on my performance analysis for Paxos-style protocols, I uncovered some weird quirks about python and numpy. Ultimately, the problem was with my code, however the symptoms of the issue looked extremely bizarre at first. Modeling WPaxos required doing a series of computations with numpy. In each step, I used numpy to do
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Retroscoping Zookeeper Staleness
ZooKeeper is a popular coordination service used as part of many large scale distributed systems. ZooKeeper provides a file-system inspired abstraction to the users on top of its replicated key-value store. Like other Paxos-inspired protocols, ZooKeeper is typically deployed on at least 3 nodes, and can tolerate F node failure for a cluster of size
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Why Government IT is Expensive and Archaic
Disclaimer: I do not work for the government, and my rant below is based on my very limited exposure to how IT works at the US government setting. Why Government IT is Expensive and Archaic? I think, this can be a very long discussion, but I do have a quick answer: standards imposed by government
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New Blog
My name is Aleksey Charapko, I am a computer science student at the University at Buffalo. In this blog I will try to write on mostly technical topics that I am interested in.
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Recent Posts
- Metastability in Recovery: Cascading Recovery with a Loop
- Murat and Aleksey Read Papers: “Self-Defining Systems”
- Murat and Aleksey Read Papers: “Cloudspecs: Cloud Hardware Evolution Through the Looking Glass”
- Murat and Aleksey Read Papers: “Rethinking the Cost of Distributed Caches for Datacenter Services”
- On Metastable Failures and Interactions Between Systems
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