1. Ten years of improvements in PostgreSQL’s optimizer Total comment counts : 10 Summary The article discusses the author’s investigation into the performance improvements of PostgreSQL’s query optimizer over the last 10 years. The author ran the join order benchmark on PostgreSQL versions 8 through 16 and recorded the 90th percentile query latency for each version. The author found that PostgreSQL’s tail performance has improved significantly, with the optimizer reducing tail latency by nearly half between version 8 and version 16....

1. Descent 3 Source Code Total comment counts : 66 Summary The article discusses the release of the Descent 3 source code, including the 1.5 patch. The code has been modified to work on Windows, Linux, and Mac, but some proprietary sound and video libraries have been removed. The author is seeking help to create a converter for the old cutscenes. They plan to get the code compiling again and clean it up....

1. Visualizing Attention, a Transformer’s Heart [video] Total comment counts : 23 Summary The article thanks supporters of a video and current patrons who fund ongoing projects. It also encourages readers to join if they find the lessons valuable. Top 1 Comment Summary The author, who has a background in quantum chemistry and some knowledge of machine learning, notices similarities between the transformer model and quantum mechanics. In quantum mechanics, the state of a physical system is represented by a high-dimensional vector, and its evolution over time is defined by a time-translation operator....

1. The Arc Product-Market Fit Framework Total comment counts : 19 Summary The article discusses the concept of product-market fit (PMF) for early-stage startups. It presents a framework that outlines three archetypes of PMF based on the customer-product relationship dynamics. The first archetype is solving a problem that is a clear and urgent need for customers. This archetype requires delivering a best-in-class solution that stands out among competitors. The second archetype involves addressing a pain point that customers have accepted as a hard fact of life....

1. An open source initiative to share and compare heat pump performance data Total comment counts : 35 Summary The article mentions the ability to add, edit, and view systems associated with an account. Users can monitor various installations with OpenEnergyMonitor and compare detailed statistics to understand performance variations. Users who are monitoring a heat pump with emoncms and the My Heat Pump app can add their details by logging in....

1. Aider: AI pair programming in your terminal Total comment counts : 38 Summary The article discusses Aider, a command line tool that allows developers to pair program with an AI, specifically GPT-3.5/GPT-4. Aider enables code editing in local git repositories, directly modifying source files and committing changes with appropriate commit messages. It supports both new and existing projects, allowing developers to ask for changes in larger, pre-existing codebases. The article provides example transcripts of how Aider can be used for various programming tasks, such as creating a Flask app, modifying a JavaScript game, making complex multi-file changes, and creating black box test cases....

1. Yes, social media is a cause of the epidemic of teenage mental illness Total comment counts : 83 Summary The article discusses the ongoing debate between skeptics and alarmists regarding the effects of social media on teenage mental health. The author, who falls into the alarmist camp, argues that there is evidence of causation between social media use and mental illness, contrary to what the skeptics claim. The skeptics, led by psychologist Candice Odgers, argue that the correlation between social media use and mental health issues does not prove causation....

1. Show HN: I made a discrete logic network card Total comment counts : 18 Summary The article discusses the author’s progress in building a complete computer system using discrete logic components. They have built a physical level adapter to convert Ethernet signals to SPI and back, and they are now implementing a MAC layer module to connect it to their homebrew computer. The receiver operation involves converting serial SPI data into a stream of bytes and writing them into a static RAM buffer....

1. PumpkinOS, a Re-Implementation of PalmOS Total comment counts : 17 Summary PumpkinOS is a re-implementation of PalmOS that runs on modern architectures. It is not an emulator and does not require a PalmOS ROM. It can run m68K PalmOS applications and includes applications such as Launcher, Preferences, Command, AddressBook, MemoPad, ToDoList, and DateBook. The source code for these applications were adapted from PalmOS SDks. PumpkinOS is licensed under GPL v3 and needs to be built from source....

1. A canonical Hamiltonian formulation of the Navier–Stokes problem Total comment counts : 9 Summary The article presents a Hamiltonian formulation of the isotropic Navier-Stokes problem using a minimum-action principle derived from the principle of least squares. The formulation involves varying the velocities and pressure as field quantities, constructing a conserved Hamiltonian functional, and formulating the Hamilton-Jacobi equation. The method can be applied to non-Hamiltonian problems as well. While there is no action integral that yields the Navier-Stokes equations in their usual form, a Hamiltonian formulation can still be found by considering a mathematically equivalent higher-order problem....