Published: 2025-04-30 | Origin: /r/ruby

The post discusses the challenges that arise in a Rails app as it gains consistent traffic, particularly regarding slow SQL queries. While ActiveRecord has improved in performance and user experience, it can still generate inefficient SQL due to common pitfalls like N+1 queries and unnecessary data loading. Although databases, such as MySQL and PostgreSQL, can provide information on slow queries, they often don't offer actionable insights, making it difficult to correlate performance issues with specific code in ActiveRecord. The process of analyzing slow query logs

Published: 2025-04-30 | Origin: /r/programming

The article discusses optimizing JavaScript performance for responsive web applications by focusing on how the V8 engine compiles JavaScript functions. It highlights that during script processing, V8 can either compile functions eagerly or defer their compilation, impacting webpage loading speed. Eager compilation of functions called during page load improves performance, with a study showing significant reductions in parse and compile times for various popular web pages. A new feature called Explicit Compile Hints allows developers to control which JavaScript files and functions are compiled eagerly,

Published: 2025-04-30 | Origin: Hacker News

The summary of the content is as follows: The document emphasizes the importance of user feedback and highlights the release of the MiMo-7B series, a set of language models designed specifically for reasoning tasks. These models were trained from scratch and report significant reasoning potential, even outperforming larger models like the 32B variants in code reasoning capabilities. The work discusses both pre-training and post-training strategies as crucial for enhancing reasoning abilities. The MiMo-7B series includes various model checkpoints and has been

Published: 2025-04-30 | Origin: Hacker News

Dr. Ellie Irwin, a 29-year-old doctor from Bristol, had her eyesight saved after a unique test revealed a rare bacterial infection that caused persistent inflammation in her right eye for five years. Despite various treatments, including steroid drops and immunosuppressants, her condition worsened and led her to consider having her eye removed. A "last resort" metagenomics analysis finally identified the infection, which was treated successfully with antibiotics. Dr. Irwin described the outcome as transformative, and Professor

Published: 2025-04-30 | Origin: /r/programming

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Published: 2025-04-30 | Origin: /r/ruby

In the April 24, 2025 edition, Matt Solt covers key highlights from RubyKaigi in Ehime, featuring a keynote by Yukihiro "Matz" Matsumoto, the creator of Ruby. Matz discussed Ruby's potential in the AI era, emphasizing its conciseness and extensibility. The edition also includes an innovative SC2AI gem for building competitive StarCraft bots, developed by Dyson Returns, complete with documentation and tutorials available on GitLab and YouTube.

Published: 2025-04-30 | Origin: /r/programming

The post discusses Automatic Sparse Differentiation (ASD) as an underutilized method in machine learning, despite the common use of automatic differentiation (AD). It highlights the benefits of leveraging the sparsity in Hessians and Jacobians, which can lead to significant computational and memory efficiency improvements. The article aims to connect the machine learning and automatic differentiation communities by explaining key techniques in ASD, including sparsity pattern detection and matrix coloring. It covers the computation of sparse Jacobians and Hessians and concludes

Published: 2025-04-30 | Origin: Hacker News

The content emphasizes the importance of user feedback and provides a brief overview of a project involving running Linux within Excel. The project utilizes a mini-rv32ima emulator, which is built as a separate DLL and accessed through a VBA macro that inputs the emulator's output into Excel cells. Although the project is functional, it is described as "buggy" and was primarily conducted for fun, without rewriting the emulator in VBA or Excel formulas. Additionally, it mentions using MSVC to build the DLL and provides

Published: 2025-04-30 | Origin: Hacker News

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Published: 2025-04-30 | Origin: Hacker News

SentinelOne emphasizes the reality of facing real-world cybersecurity threats as an inherent part of its operations. The company experiences attacks firsthand, which informs their approach to defending against such threats. This ongoing pressure from actual attacks enhances their products and operations through continuous improvement. As a prominent cybersecurity vendor, they recognize that being a high-value target makes them susceptible to a range of adversaries, including state-sponsored actors and financially motivated criminals. Their recent experiences with diverse attacks—ranging from ransomware to campaigns by nation-state

Published: 2025-04-30 | Origin: Hacker News

The author discusses their experience building an HN (Hacker News) API client as part of the project hn.unlurker.com, focusing on utilizing the latest features in Go. The client enables the retrieval of active items (comments and stories) and includes a feature to download all items as a comprehensive JSON file. After successfully downloading a 20 GiB file containing all Hacker News data, the author initially used grep to analyze the content but then opted to use DuckDB, a fast and embedd

Published: 2025-04-29 | Origin: /r/ruby

The author has developed a Ruby tracing profiler that tracks four types of events—Ruby function calls, system calls, thread-state changes, and garbage collection—while maintaining low overhead (under 30 nanoseconds per function call), making it suitable for production environments. The profiler reportedly provides a unique combination of signals compared to existing tools, such as ruby-prof, which has significantly higher overhead (538 ns). Although the profiler is currently in a proof-of-concept stage and not yet open-sourced, interest from

Published: 2025-04-29 | Origin: Hacker News

IBM Research, in collaboration with CMU, Princeton, and the University of Illinois, has developed an open-source large language model (LLM) called Bamba. This model uniquely combines the capabilities of transformer architectures with the speed of state-space models, addressing issues related to the quadratic memory and processing costs associated with longer conversations in traditional transformers. Bamba is expected to feature prominently in IBM's upcoming Granite 4.0 models. An event discussing the optimization of LLM inference performance will be held on

Published: 2025-04-29 | Origin: Hacker News

The content discusses the implementation of a technique called CoRT, which enhances AI models by encouraging them to recursively evaluate their responses, generate alternatives, and select the best option. This method allows AI to "doubt" itself and improve its outputs through repeated iterations. The author tested this with the Mistral 3.1 24B model, noting a significant improvement in performance, particularly in programming tasks. The author invites contributions to further enhance this technique and mentions that the project is open-source under

Published: 2025-04-29 | Origin: /r/programming

The author is developing a programming language and acknowledges the difficulty involved in language design, particularly in parsing. They propose a simplified approach by minimizing the number of syntax elements to just five, which would ease parsing challenges, especially for C-family languages. Instead of traditional constructs like switch/case statements and loops, the author suggests using simpler alternatives such as if statements and named recursion. They argue that many features common in programming languages, like pattern matching and parametric polymorphism, are unnecessary. The design leans

Published: 2025-04-29 | Origin: /r/programming

The content discusses the concept of Zero Trust Architecture (ZTA), which aims to address vulnerabilities in complex systems, as illustrated by the Swiss Cheese model. Catastrophic failures often result from multiple smaller failures rather than a single disaster. ZTA emphasizes the importance of eliminating implicit trust within networked systems, especially given the rise of non-human identities and distributed cloud systems. It advocates for strong identity verification and continuous auditing of all users and devices. The principles of ZTA, first established by NIST in

Published: 2025-04-29 | Origin: /r/programming

Amazon RDS for PostgreSQL is an AWS service that offers managed instances of the PostgreSQL database. A recent study by Jepsen revealed that multi-AZ clusters of Amazon RDS for PostgreSQL can violate Snapshot Isolation, the strongest consistency model available. This issue, including instances of Long Fork and G-nonadjacent cycles, was observed across all tested versions (13.15 to 17.4). As a result, Amazon RDS might only provide Parallel Snapshot Isolation instead. Post

Published: 2025-04-29 | Origin: /r/programming

The author expresses frustration with the complexities of code performance optimization, emphasizing that it is a brute-force task that requires careful consideration of various approaches. While discussing the nuances of optimization, the author notes that some techniques can work well in isolation but may lead to worse performance when combined, highlighting the need for deep expertise in selecting the right strategies. The author also shares personal challenges in exploring optimization options, particularly in algorithm design, due to the myriad of choices and their interdependencies. Furthermore, they critique the idea

Published: 2025-04-29 | Origin: /r/ruby

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Published: 2025-04-29 | Origin: /r/programming

The writer shares their fascination with the 1995 movie "Hackers," particularly the scene featuring the PowerBook Duo 280c. Motivated by nostalgia, they purchased this vintage Apple subnotebook and began exploring its features, noting the underwhelming screen brightness and keyboard quality, but expressing fondness for its trackball. Their goal was to transfer files to the PowerBook, initially considering a Floppy EMU for compatibility but ultimately opting for a BlueSCSI. While awaiting its arrival,