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Scientific datasets are riddled with copy-paste errors
Initial results from scanning through Excel files belonging to 600 published scientific papers.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,888 posts.
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84% of a single-threaded 1KB write in Redis is spent in the kernel
Alex Clemmer is a computer programmer. Other programmers love Alex, excitedly describing him as "employed here" and "the boss's son".
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Making ActiveRecord 2x faster
TL;DR: AdequateRecord is a set of patches that adds cache stuff to make ActiveRecord 2x faster
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PostgreSQL High Availability Solutions – Part 1: Jepsen Test and Patroni
Note: code used in this article can be found on the Github repo jepsen-postgres-ha .
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League of Legends data scraping the hard and tedious way for fun
Personal website for some random tidbits I work on
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Show HN: Domain-tailored CRDTs for collaboration without server involvement
An in-depth exploration of a new class of expressive, performant, and intuitive CRDTs, together with macOS and iOS sample code.
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SAT score distributions in Michigan
The state of Michigan required all public HS seniors to take the SAT last year (~91k out of ~107k total seniors in the state). This generate...
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Excess Deaths in 2020
Update Updated on April 29th, 2021. The CDC continues to update its counts of deaths by cause for 2020 as data comes in from the jurisdictions that report to it. The data are by now fairly complete, though there are still significant gaps in several states due to delayed reporting. North Carolina, in particular, has…
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Four DB2 Code Bases?
Many years ago I worked on IBM DB2 and so I occasionally get the question, “how the heck could you folks possibly have four relational database management system code bases?” Some go on to argue that a single code base would have been much more efficient. That’s certainly true. And, had we moved to a single code base…
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Trying chDB, an embeddable ClickHouse engine
A lightweight in-process SQL OLAP engine, powered by ClickHouse.
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On Disk IO, Part 3: LSM Trees
If you like the series, check out my book on Database Internals!
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Mistakes Beginners Make When Working with Databases
When you start out as a developer there’s an overwhelming amount of things to grasp. First there’s the language itself, then all the quirks of the specific framework you’re using,and after that (or maybe before) we’ll throw front-end development into the mix, and somewhere along the line you have to decide to store…
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Bcachefs, an Introduction/Exploration
Introduction & background information NOTE: This content is from an internal talk I gave, thus the reason it may read like a presentation So what is …
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Index Investing Makes Markets and Economies More Efficient (2016)
U.S. equity index funds have grown dramatically in recent decades, from a negligible $500MM in assets in the early 1980s to a staggering $4T today. The consensus view in the investment community is that this growth is unsustainable. Indexing, after all, is a form of free-riding, and a market can only support so many…
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How can we know if paid search advertising works?
Addressing causal problems on major eBay and Facebook
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What's the big deal about embedded key-value databases?
What's the big deal about key-value databases like FoundationDB and RocksDB?
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Improve developer habits by showing time cost of DB queries
This is the first in a series of posts where I share a quick, easy to implement tip that I’ve found useful in my development career
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Postgresql 9.2 will have boat-loads of performance enhancements
This blog is about my work on the Postgres open source database, and is published on Planet PostgreSQL. PgLife allows monitoring of all Postgres community activity.
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Mosaic: processing a trillion-edge graph on a single machine
Mosaic: Processing a trillion-edge graph on a single machine Maass et al., EuroSys’17 Unless your graph is bigger than Facebook’s, you can process it on a single machine. With the incep…
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There have been 562 bank failures since 2000
One way to measure the magnitude of a bank's failure is by the amount of assets the bank held. At the time it failed, SVB's collapse was the second largest American bank failure of all time, and the largest since 2008.
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How (and why) to run SQLite in production
This is my personal site, where I write about Ruby, programming, and any of my varied fascinations.
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A Day in the Life of Americans
I wanted to see how daily patterns emerge at the individual level and how a person’s entire day plays out. So I simulated 1,000 of them.
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Speculative KV coding: losslessly compressing KV cache by up to ~4×
Lossless compression of a target model's KV cache by up to 4×, using a cheaper predictor model to drive an arithmetic coder.