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New
The latest blog posts to take off on Hacker News. 199 posts.
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Ggplot2 version 2.0.0 released by Hadley Wickham
ggplot2 2.0.0: official extension mechanism, new geoms (geom_count, geom_curve, geom_label), appearance tweaks, and facet labels.
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PostgreSQL 9.5 RC1 Released
The PostgreSQL Global Development Group announces that the first release candidate is available for download. This release should fix all …
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RethinkDB Driver for Java now available
Today, we’re pleased to announce the release of our Java client driver for RethinkDB. Visit the installation instructions for details about how to use it in your Java project.
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InfluxDB is now InfluxData, a platform for time series data
Today we're announcing that InfluxDB, the company, is now InfluxData. This is the beginning of delivering on our long-term vision.
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Why Percentiles Don’t Work the Way We Think
Customers ask us for p99 (99th percentile) of metrics pretty frequently. We plan to add such a feature to Database Performance Monitor (DPM)(more on that later). But a lot of the time, when customers make this request, they have something very specific, and different, ...
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Federal Reserve Bank of NY converts major economic model to Julia
Marco Del Negro, Marc Giannoni, Pearl Li, Erica Moszkowski, and Micah Smith We have implemented the FRBNY DSGE model in a free and open-source language called Julia. The code is posted here on GitHub, a public repository hosting service. This effort is the result of a collaboration between New York Fed staff and folks…
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Apache Kafka 0.9 is released
Major milestone release Apache Kafka 4.0 removes ZooKeeper entirely, provides early access to Queues for Kafka, and enables faster rebalances, in addition to many other new KIPs.
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Modern SQL: With – Organize Complex Queries
The WITH clause adds named subqueries to SQL queries. WITH is also known as Common Table Expression (CTE).
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Happy Little Words – Analyzing the Bob Ross Twitch Chat
In late October the video game streaming site Twitch.tv launched "Twitch Creative" , essentially giving people permission to stream non-video game related creative content on the site. To celebrate the launch they streamed all 403 episodes of The Joy of Painting with Bob Ross in a giant marathon.
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Analyzing 1.1B NYC Taxi and Uber Trips
The New York City Taxi & Limousine Commission has released a staggeringly detailed historical dataset covering over 1.1 billion individual taxi trips in the city from January 2009 through June 2015. …
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Will ZFS and non-ECC RAM kill your data?
This comes up far too often, so rather than continuing to explain it over and over again, I’m going to try to do a really good job of it once and link to it here.
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Julia Computing Granted $600k by Moore Foundation
As data-driven research becomes more mainstream, the need for efficient and powerful scientific computing tools increases. To help meet this need, the Gordon an…
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Elasticsearch as a Time Series Data Store
Ever wondered how Elasticsearch handles time series metrics? Felix Barnsteiner from stagemonitor - an open source solution to application performance monitoring
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What MongoDB got right
MongoDB is perhaps the most-widely-mocked piece of software out there right now. While some of the mockery is out-of-date or rooted in misunderstandings, much of it is well-deserved, and it’s difficult to disagree that much of MongoDB’s engineering is incredibly simplistic, inefficient, and immature compared to…
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Parallel Sequential Scan is Committed to PostgreSQL 9.6
I previously suggested that we might be able to get parallel sequential scan committed to PostgreSQL 9.5. That did not happen. However, I...
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Time series database Graphite seems to be falling into disfavor
SolarWinds database performance monitoring software helps optimize and manage databases, providing comprehensive monitoring, analysis, and tuning. Improve your database performance with visibility, control, and streamlined management across on-premises and cloud environments. Free trial available!
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Irmin: Git-like distributed DB
Read the post on "Introducing Irmin: Git-like distributed, branchable storage" from our blog.
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Bayesian ranking of items with up and downvotes or 5 star ratings
Evan Miller wrote a great article How Not To Sort By Average Rating . He shows that simple formulas like score = upvotes - downvotes or score = upvotes / (upvotes + downvotes) don’t work. He proposes to use the lower bound of the Wilson score confidence interval. The formula is complicated and somewhat of a hack…