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Caching strategies for ultra-High performance in Ruby on Rails, part 1

Published: 2025-03-11 | Origin: /r/ruby

Optimizing web applications, particularly Ruby on Rails ones, requires a robust caching strategy to enhance performance and reduce load times. Caching techniques, such as fragment and Russian Doll caching, are essential for managing data effectively, especially under heavy traffic or complex queries. This approach not only improves user experience but also ensures scalability and maintainability of applications. Additionally, using integrated monitoring tools, like Scout, helps identify performance issues before they affect users. Caching helps by storing frequently accessed data for quick retrieval, significantly

The :has selector in use

Published: 2025-03-11 | Origin: /r/programming

The blog post discusses the use of the CSS :has selector, highlighting its functionality and advantages for developers. It explains that the :has selector allows for styling parent elements based on the presence of certain child elements, making it easier to manage designs without needing additional classes. For example, it can be used to differentiate hero components based on whether they contain an image, and to control the styling of input toggles without relying on JavaScript. The author emphasizes that the :has selector simplifies the process of setting

New tools for building agents

Published: 2025-03-11 | Origin: Hacker News

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Fastplotlib: GPU-accelerated, fast, and interactive plotting library

Published: 2025-03-11 | Origin: Hacker News

fastplotlib is a new open-source, GPU-accelerated scientific plotting library designed for high-performance, interactive visualization in Python. It addresses the challenges of scientific visualization, which traditionally depends on static plots, by enabling dynamic and interactive displays that enhance data exploration and analysis. The library allows users to visualize complex data sets interactively, such as using covariance matrices. An example is provided where a covariance matrix for the Olivetti faces dataset can be explored interactively, showing how changes in pixel intensities can

Hiring in 2025 vs 2021

Published: 2025-03-11 | Origin: /r/programming

Of course! Please provide the content you would like summarized, and I'll be happy to help.

A 10x Faster TypeScript

Published: 2025-03-11 | Origin: /r/programming

The announcement details upcoming improvements to TypeScript's performance, particularly addressing issues faced by developers working with large codebases. Currently, TypeScript can struggle with long load and check times, forcing developers to choose between quick editor startup and full code visibility. The team aims to enhance the developer experience by implementing a native port of the TypeScript compiler and tools, which promises to improve editor startup times, reduce build times by up to 10 times, and lower memory usage. The native implementation is expected to be

Happy 20th Birthday, Y Combinator

Published: 2025-03-11 | Origin: Hacker News

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RubyLLM: A delightful Ruby way to work with AI

Published: 2025-03-11 | Origin: Hacker News

The content emphasizes the ease of using Ruby for AI integration with RubyLLM, which simplifies the process by eliminating complex configurations, callbacks, and error handling. It unifies various AI provider APIs into one consistent interface, minimizing dependencies to just Faraday and Zeitwerk. Users can find comprehensive guides on utilizing features like streaming responses and embedding generations at the provided website. The tool is designed to make working with AI enjoyable and is released under the MIT License. Feedback from users is taken seriously, and documentation is

Short Ruby Newsletter - edition 126

Published: 2025-03-11 | Origin: /r/ruby

The content highlights various recent updates and events in the Ruby programming community as of March 10, 2025. Key points include: 1. **Guide Announcement**: A guide is available for improving IT operations globally, focusing on efficiency, compliance with local legislation, and integrating IT tools. 2. **Free Ruby Course**: Ryan Kulp launched a free Ruby course titled "Fundamentals." 3. **Book Releases**: - Gregory Brown has released a free sample of his guide

Developer convicted for “kill switch” code activated upon his termination - Ars Technica

Published: 2025-03-11 | Origin: /r/programming

A 55-year-old software developer, Davis Lu, plans to appeal after being convicted of planting malicious code in the network of his former employer, Eaton Corp., resulting in significant financial losses. Following a corporate restructuring in 2018 that diminished his role, Lu began sabotaging the company's systems by introducing destructive code designed to cause system crashes and prevent legitimate logins. His most notable creation was a "kill switch" that activated upon his termination in 2019, disrupting operations globally. Lu faces up

A Supersolid Made Using Photons

Published: 2025-03-11 | Origin: Hacker News

Manuele Landini from the University of Innsbruck has contributed to groundbreaking research published in *Nature* that demonstrates a supersolid phase of matter in a photonic crystal polariton condensate. Led by researchers at CNR Nanotec in Italy, this work represents the first experimental evidence of supersolidity in a non-equilibrium system, distinct from traditional ultracold atomic systems. Supersolids uniquely combine properties of both solids (rigidity) and superfluids (frictionless flow).

Spring Data JPA: Query Derivation Explained!

Published: 2025-03-11 | Origin: /r/programming

Spring Data JPA is a framework that simplifies data access in Java applications using JPA. It allows developers to define data access methods through repository interfaces. There are two ways to query data: query derivation and manual queries. Query derivation is a feature that automatically generates queries based on method names. For instance, a method named `findByType` in a `PermissionRepository` will trigger Spring Data JPA to create a corresponding query. The method names typically start with keywords like `find`,

Seven39 – a social media app that is only open for 3 hours every evening

Published: 2025-03-11 | Origin: Hacker News

The content describes a social media platform called seven39 that operates only from 7:39 PM to 10:39 PM EST. As of the current time (12:00 AM EST), the platform is closed and will reopen in 19 hours and 38 minutes. Users can create an account to receive an email notification when it opens. The platform emphasizes the benefits of shared online time, stating it provides three hours of enjoyable interaction without distractions like endless scrolling or fear of missing out (FOMO

Bending Spacetime in the Basement

Published: 2025-03-11 | Origin: Hacker News

The narrator reflects on the joys of adulthood, particularly the freedom to pursue creative projects without interference from siblings, contrasting it with their childhood experiences. They emphasize the philosophical significance of understanding gravity, illustrating how Isaac Newton's realization that "everything in the universe attracts everything else" bridged the gap between simple observations of falling objects and a broader understanding of the laws governing the universe. This insight not only advanced scientific thought during the Enlightenment but also set the stage for modern science and technology. The text introduces a

Conway's Game of Life Implemented With Ractors - 50,000 Messages Per Second Over Ractor Ports - https://github.com/ebarlas/game-of-life-ractors

Published: 2025-03-10 | Origin: /r/ruby

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What made the Irish famine so deadly

Published: 2025-03-10 | Origin: Hacker News

In the first act of Oscar Wilde's "The Importance of Being Earnest," set against the backdrop of a visit from Aunt Augusta, a comedic food crisis unfolds when Algernon consumes all the cucumber sandwiches meant for her. Algernon's servant, Lane, cleverly saves the situation by fabricating a story about a cucumber shortage. This scene humorously trivializes a potential food shortage among the English upper classes, contrasting sharply with the actual historical context of the Great Hunger in Ireland, which led to the death

How I learned to code with my voice

Published: 2025-03-10 | Origin: /r/programming

The writer shares their personal journey with severe hand pain that developed in January 2025, rendering them unable to type or use a trackpad, which caused significant panic due to their inability to work and earn money. After medical evaluations, it was determined that they possibly have abnormal pressure on the radial nerve rather than carpal tunnel syndrome. While prescribed exercises are helping, they emphasize the importance of both physical and mental rest for recovery. The writer believes their pain is also tied to emotionally traumatic experiences from the

Mathematical Foundations of Reinforcement Learning

Published: 2025-03-10 | Origin: Hacker News

The text introduces the book "Mathematical Foundations of Reinforcement Learning," which has received over 6,000 stars, indicating its popularity and helpfulness to readers. It offers a mathematical yet approachable exploration of fundamental concepts, classic algorithms, and basic problems in reinforcement learning. The book emphasizes understanding the rationale behind algorithms, provides accessible mathematical explanations, and is structured for coherent progression between chapters. It includes illustrative examples based on grid world tasks to clarify concepts, and readers can engage with supplementary materials presented in

Please tell me if my resume is minimally acceptable for applying for a Ruby job? I have never worked with Ruby before, only personal projects.

Published: 2025-03-10 | Origin: /r/ruby

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Software-Defined Radio for Engineers (2018) [pdf]

Published: 2025-03-10 | Origin: Hacker News

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