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What’s behind the recent surge in the M1 money supply?
While the terms “money” and “wealth” often mean the same thing in everyday parlance, economists define money more narrowly as the component of wealth consisting of
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 561 posts.
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Percentage of Bachelor's degrees conferred to women, by major (1970-2012)
Randy Olson charts out the percentage of Bachelor's degrees conferred to women (by major) and makes some startling findings.
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[109] Data Falsificada (Part 1): “Clusterfake”
This is the introduction to a four-part series of posts detailing evidence of fraud in four academic papers co-authored by Harvard Business School Professor Francesca Gino. In 2021, we and a team o…
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Object-Relational Mapping is the Vietnam of Computer Science
I had an opportunity to meet Ted Neward at TechEd this year. Ted, among other things, famously coined the phrase “Object-Relational mapping is the Vietnam of our industy” in late 2004. It’s a scary analogy, but an apt one. I’ve seen developers struggle for years with the
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I'm all-in on server-side SQLite
Ben Johnson has joined Fly.io
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SQLite Is a Library of Congress Recommended Storage Format
SQLite is a Recommended Storage Format for datasets according to the US Library of Congress . Further information:
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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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Haunted by Data
This is the text version of a talk I gave on October 1, 2015, at the Strata+Hadoop World conference in New York City. The video version is here (20 mins).
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ZFS: Use mirror vdevs, not RAIDZ
Continuing this week’s “making an article so I don’t have to keep typing it” ZFS series… here’s why you should stop using RAIDZ, and start using mirror vdevs instead.
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Jepsen: Postgres
Previously on Jepsen , we introduced the problem of network partitions . Here, we demonstrate that a few transactions which “fail” during the start of a partition may have actually succeeded.
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Spanner: TrueTime and external consistency
Understand Spanner's TrueTime and external consistency, ensuring globally consistent reads and writes across the distributed database.
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Sizing Up Twitter Users
Twitter users are younger, more likely to identify as Democrats, more highly educated and have higher incomes than U.S. adults overall.
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Don't use Hadoop when your data isn't that big
"So, how much experience do you have with Big Data and Hadoop?" they asked me. I told them that I use Hadoop all the time, but rarely for jobs larger than a few TB. I'm basically a big data neophite - I know the concepts, I've written code, but never at scale.
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A database for 2022
we moved from etcd to SQLite for a simpler, more scalable database solution. Learn about Litestream, live replication, and lessons learned.
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Apache Arrow and the “Things I Hate About Pandas”
This post is the first of many to come on Apache Arrow, pandas, pandas2, and the general trajectory of my work in recent times and into the foreseeable future. This is a bit of a read and overall fairly technical, but if interested I encourage you to take the time to work through it.
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Evidence of fraud in an influential field experiment about dishonesty
This post is co-authored with a team of researchers who have chosen to remain anonymous. They uncovered most of the evidence reported in this post. These researchers are not connected in any way to…
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Quirks, Caveats, and Gotchas in SQLite
The SQL language is a "standard". Even so, no two SQL database engines work exactly alike. Every SQL implementation has its own peculiarities and oddities, and SQLite is no exception to this rule.
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Cdb: a fast, reliable, simple package for creating, reading constant databases
Packages that need to read cdb files should incorporate the necessary portions of the cdb library rather than relying on an external cdb library.
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Jepsen: CockroachDB beta-20160829
CockroachDB is a distributed SQL database, loosely patterned after Google Spanner and designed for semi-synchronous networks. It speaks the PostgreSQL wire protocol , supports a reasonable dialect of SQL , and combines replication for durability with transparent scale-out sharding for large tables. Its most…
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MongoDB 3.4.0-rc3
In the past year and a half, MongoDB has put a good deal of work into improved read safety, enabled by the adoption of their new replication protocol and the WiredTiger storage engine. Dirty reads were addressed in 3.2 by introducing a majority read concern , and stale reads were addressed with the introduction of the…
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SQLite Begin Concurrent
Usually, SQLite allows at most one writer to proceed concurrently. The BEGIN CONCURRENT enhancement allows multiple writers to process write transactions simultanously if the database is in "wal" or "wal2" mode, although the system still serializes COMMIT commands.
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Peritext: A CRDT for Rich-Text Collaboration
Collaboration on rich text is hard to model with plain-text approaches. We review the challenges and how to construct a CRDT for rich text.
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D1: Our SQL database
Today, we’re excited to announce D1, Cloudflare’s first SQL database, designed for Cloudflare Workers
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The internals of PostgreSQL
After a temporary stay in Japan to focus on my health and personal responsibilities, I am fully recovered, ready, and excited to work abroad again.
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Cassandra vs MongoDB vs CouchDB vs Redis vs Riak comparison
The big Cassandra vs Mongodb vs CouchDB vs Redis, vs Riak vs HBase vs Couchbase (ex-Membase) vs OrientDB vs Aerospike vs Neo4j vs Hypertable vs ElasticSearch vs Accumulo vs VoltDB vs Scalaris vs RethinkDB vs Kyoto Tycoon comparison. While SQL databases are insanely useful tools, their monopoly in the last decades is…
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Please stop calling databases CP or AP
This blog post has been translated into Russian , Japanese , Chinese , and Chinese again . For more detail on problems with CAP, and a proposal for an alternative, please see my paper A Critique of the CAP Theorem .
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You cannot have exactly-once delivery (2015)
I’m often surprised that people continually have fundamental misconceptions about how distributed systems behave. I myself shared many of these misconceptions, so I try not to demean or dismiss but rather educate and enlighten, hopefully while sounding less preachy than that just did. I continue to learn only by…
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A Better Default Colormap for Matplotlib
An overview of the colormaps recommended to replace 'jet' as default.