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Category: Development

Introduction to Digital Filters with Audio Applications

2025-07-12

This comprehensive textbook provides a thorough introduction to digital filters and their applications in audio processing. Starting with the simplest lowpass filter, it progressively covers the theoretical foundations, design methods, and implementation techniques of various filter types, including linear time-invariant (LTI) filters, finite impulse response (FIR) filters, infinite impulse response (IIR) filters, and diverse filter structures and implementations. The book includes numerous Matlab and Faust code examples, along with rich audio application case studies, making it ideal for students and researchers in digital signal processing and audio engineering.

(ccrma.stanford.edu)
Development digital filters

Python's Dark Magic: Dict Unpacking Library

2025-07-12
Python's Dark Magic: Dict Unpacking Library

A Python library called `dict-unpacking-at-home` provides dictionary unpacking, allowing you to unpack dictionaries directly like this: `{greeting, thing} = dct`. While cool, the author claims it's not a critical library and the current version breaks line numbers in stack traces. A fix exists, but at a cost... With almost a million downloads per month and 30M+ total downloads, many people are using this seemingly unreliable library.

(github.com)
Development dictionary unpacking dark magic

Deep Dive into CLR Garbage Collection

2025-07-12
Deep Dive into CLR Garbage Collection

This article provides a comprehensive overview of garbage collection (GC) within the Common Language Runtime (CLR). The GC acts as an automatic memory manager, handling memory allocation and release for managed code, freeing developers from manual memory management and preventing issues like memory leaks. It details core GC concepts, memory management principles, allocation and release processes, generational garbage collection strategies (Gen 0, 1, 2, and the Large Object Heap), trigger conditions, phase breakdowns, and handling unmanaged resources. The article explains how the GC optimizes memory usage by dividing the heap into generations based on object lifespan, improving efficiency by focusing on shorter-lived objects first.

(learn.microsoft.com)
Development

Reverse Proxy Deep Dive: Connection Management Challenges and Evolution

2025-07-12
Reverse Proxy Deep Dive: Connection Management Challenges and Evolution

This article delves into the inner workings of a reverse proxy and the complexities of connection management. From single-threaded to multi-threaded, multi-process, and event-driven architectures with socket sharding, reverse proxies have evolved significantly to handle high concurrency. The article details the advantages and disadvantages of various techniques, such as the efficiency of epoll in I/O multiplexing and the challenges of multi-threaded models with multi-core processors, and points out further complexities in supporting TLS and protocol diversity.

(medium.com)
Development connection management

Modularizing a Monolith with Elixir's Hot Code Reloading

2025-07-12

Alzo, an Elixir monolith deployed as one instance per client, leverages Elixir and Erlang VM's hot code loading for client-specific features. This avoids microservices' cascading failures and complex testing. Client-specific LiveView apps reside in `/alzo/lib/clients/apps`, dynamically loaded at startup. Client code is removed during the build process, preventing the main app from depending on runtime apps. Hot code upgrades are avoided for simplicity. This approach provides efficient development, maintainability, scalability, and the ability to easily refactor common functionalities from dynamic apps into the main codebase.

(lucassifoni.info)
Development Hot Code Loading Monolithic Application

Jank: Seamless C++ Interop in Clojure, Achieved by a Solo Dev

2025-07-12
Jank: Seamless C++ Interop in Clojure, Achieved by a Solo Dev

Jank, a Clojure runtime, has made significant strides in achieving seamless interoperability with C++. Through manual memory management, enhanced type systems, and opaque boxes, the developer enables direct C++ code calls within Clojure. Real-world examples showcased include printing "Hello, world!" via C++ streams and parsing JSON files using the JSON for Modern C++ library. Future work focuses on packaging, distribution, bug fixes, and ultimately, an alpha release.

(jank-lang.org)
Development Interop

Simple Sonos Control for a 5-Year-Old using ESP32

2025-07-12
Simple Sonos Control for a 5-Year-Old using ESP32

A father built a simple Sonos Play:1 speaker control system for his 5-year-old child. Using an M5Stack CardPuter v1.1 (ESP32S3) as a controller and Go for backend logic, the child can play or restart their favorite playlist with a button press. A green light indicates operational status. This is a fun, easy-to-use project highlighting simplicity and playful interaction.

(github.com)
Development Kids Project

Fighting Back Against Abusive Web Crawlers with Fake JPEGs

2025-07-12
Fighting Back Against Abusive Web Crawlers with Fake JPEGs

The author developed a small web application called Spigot that generates fake web pages to confuse malicious web crawlers. Recently, a crawler called ImageSiftBot aggressively targeted it for images, despite Spigot lacking them. To counter this, the author cleverly exploits the structure of JPEG files, generating fake JPEGs filled with random data. This effectively wastes the crawler's resources while minimizing CPU load on the server. The approach is simple and efficient, requiring minimal code, and the generated images display correctly in most browsers.

(www.ty-penguin.org.uk)
Development malicious crawlers

Near-Catastrophic OpenZFS Bug Highlights the Power of Rust's Type System

2025-07-11
Near-Catastrophic OpenZFS Bug Highlights the Power of Rust's Type System

A subtle yet devastating bug in OpenZFS's core disk allocation function was recently discovered. The bug, a simple type error resulting in the wrong size being returned, could silently overwrite data. It took nearly two days to track down. While the bug wasn't present in any released version, it spurred reflection on the limitations of static analysis in C and the advantages of Rust's type system. Rust's ability to define custom types (like `PhysicalSize` and `AllocatedSize`) would have prevented this. The author argues that relying solely on programmer perfection is flawed; leveraging tools and language features to improve code quality and mitigate hard-to-detect, high-impact bugs is key.

(despairlabs.com)
Development

Red Hat Style Guide: A Deep Dive into Terminology

2025-07-11

This document meticulously outlines the standardized terminology used in Red Hat technical documentation. It covers a wide range of aspects, from software names (e.g., IBM S/390, Samba) to descriptions of security (avoiding vague terms like "secure" and requiring specific details on security features). The guide also standardizes abbreviations (e.g., SSH, SSL), command-line descriptions, and clarifies the proper usage of easily confused words (e.g., "since" vs. "because"). The overall aim is to ensure consistency and accuracy, enhancing readability and professionalism.

(stylepedia.net)
Development Technical Writing Style Guide

Cactus: Cross-Platform Framework for Local LLM Deployment

2025-07-11
Cactus: Cross-Platform Framework for Local LLM Deployment

Cactus is a cross-platform framework for deploying large language models (LLMs), vision language models (VLMs), and text-to-speech (TTS) models locally within your app. Supporting Flutter and React Native, it works with any GGUF model from Hugging Face (Qwen, Gemma, Llama, etc.), handling models from FP32 down to 2-bit quantization. Cactus provides MCP tool calls for enhanced AI functionality (reminders, image search, message replies), cloud model fallback for complex tasks, Jinja2-powered chat templates, and token streaming. Example code, performance benchmarks across various devices, and C++ backend are provided.

(github.com)
Development

Btrfs Performance Boost: Chunk Allocation with Device Roles

2025-07-11

A significant performance improvement is coming to the Btrfs filesystem! A new patch introduces a performance-based chunk allocation method using device roles, addressing the current imbalance caused by allocation based solely on free space. By defining five device roles (metadata_only, metadata, none, data, data_only) and prioritizing roles alongside remaining space, the system can intelligently assign faster devices to metadata and slower devices to data, significantly boosting read/write performance. This improvement avoids complex device speed measurements, leveraging the existing on-disk format for smarter, more efficient storage management.

(lwn.net)
Development

diffsitter: Semantic Code Diff Tool

2025-07-11
diffsitter: Semantic Code Diff Tool

diffsitter is a code diff tool that generates semantically meaningful diffs by comparing the Abstract Syntax Trees (ASTs) of files, ignoring formatting differences. It supports numerous programming languages and offers features like configurable node filtering, terminal-friendly formatting, and detailed logging. Installation options include building from source, using pre-built binaries, and package managers.

(github.com)
Development code diff abstract syntax tree

eBPF and Container Runtimes: Connecting via the CRI

2025-07-11

This article explores how open-source eBPF projects connect with container runtimes (CRs) using the Container Runtime Interface (CRI) to enrich context with pod and container information. It details the connection process: locating the Unix socket file, establishing a gRPC connection using the CRI API, and querying information. Examples from Tetragon, crictl, and Tracee illustrate different approaches to connecting to the CR, including hardcoded default socket paths and runtime connection attempts. Finally, it demonstrates querying container information like cgroup paths using the CRI API, such as Tetragon's method for retrieving a container's cgroup path.

(h0x0er.github.io)
Development Container Runtime

AI Tools Slow Down Experienced Open-Source Developers: A Randomized Controlled Trial

2025-07-11
AI Tools Slow Down Experienced Open-Source Developers: A Randomized Controlled Trial

A randomized controlled trial (RCT) investigated the impact of early-2025 AI tools on the productivity of experienced open-source developers working on their own repositories. Surprisingly, developers using AI tools took 19% longer to complete tasks – AI made them slower. Researchers view this as a snapshot of current AI capabilities; they plan to continue this methodology to track AI acceleration from AI R&D automation. The study explores potential factors contributing to the slowdown and examines discrepancies between this RCT and other benchmarks and anecdotal evidence, highlighting the need for diverse evaluation methodologies to comprehensively assess AI capabilities.

(metr.org)
Development

Android's New Canary Channel: Continuous Early Access for Developers

2025-07-11
Android's New Canary Channel: Continuous Early Access for Developers

Google is replacing its Developer Preview program with a new Canary channel for Android, offering developers rolling updates throughout the year. This allows for earlier and more consistent access to experimental features and APIs. Unlike previous manual installations, Canary builds are delivered over-the-air and run concurrently with the beta program. While intended for testing and not daily use, Canary provides valuable early feedback, enabling developers to identify issues and test their apps continuously. Support is currently available for Pixel devices and the Android Studio Canary version.

(nerds.xyz)
Development Canary Channel Developer Preview

Hacker News Database Popularity: ClickHouse and DuckDB Surge

2025-07-11
Hacker News Database Popularity: ClickHouse and DuckDB Surge

An analysis of 18 years of Hacker News data reveals the surging popularity of open-source databases ClickHouse and DuckDB, while cloud-native databases see declining discussion. PostgreSQL maintains its strong presence, and SQLite stands out for high user engagement. The analysis uses headline counts and engagement metrics (comments and points) to show trends, highlighting the rise of open-source and analytical databases.

(camelai.com)
Development

AI Coding Tools: A 19% Productivity Drop for Experienced Developers

2025-07-11
AI Coding Tools: A 19% Productivity Drop for Experienced Developers

A rigorous study of experienced developers using AI coding tools reveals a surprising 19% decrease in productivity, contradicting developers' self-reported expectation of a 20% increase. The study found that AI-generated code often failed to meet the high standards of mature, large-scale projects, leading to significant time spent reviewing and correcting the AI's output. This highlights the limitations of current AI coding tools, suggesting that their effectiveness is heavily dependent on project type, developer experience, and the maturity of the tools themselves.

(secondthoughts.ai)
Development

Visual Linear Algebra Blog: A Diagrammatic Approach to Linear Algebra

2025-07-11
Visual Linear Algebra Blog: A Diagrammatic Approach to Linear Algebra

This blog explores linear algebra through a visual, diagrammatic approach. It explains complex mathematical concepts in an accessible way, using illustrations to clarify challenging topics. The content spans from basic operations to advanced concepts like matrices, homomorphisms, and relations, all explained step-by-step with diagrams. The blog also announces an Applied Category Theory Research School and related research opportunities, making it valuable for students and researchers interested in linear algebra.

(graphicallinearalgebra.net)
Development visual mathematics

FOKS: Secure Data Access via Simple Key Hierarchy

2025-07-11

FOKS secures data access using a simple key hierarchy. Base-level keys include user device keys, backup keys, and YubiKeys. Each user has multiple per-user keys (PUKs) whose seed secrets are encrypted with all available base-level keys. Removing a base-level key rotates PUKs. Team keys (PTKs) function similarly, shared among team members (users or sub-teams) and encrypted with member keys. This hierarchy ensures only authorized devices, teams, and users can access data.

(foks.pub)
Development key management

LLM Inference in Production: The Definitive Guide

2025-07-11
LLM Inference in Production: The Definitive Guide

This handbook tackles the fragmented knowledge surrounding LLM inference in production. It covers core concepts, performance metrics (like Time to First Token and Tokens per Second), optimization techniques (continuous batching, prefix caching), and operational best practices. Whether you're fine-tuning a small open model or running large-scale deployments, this guide helps make LLM inference faster, cheaper, and more reliable.

(bentoml.com)
Development inference production

Gemini API Gets a Batch Mode for High-Throughput Workloads

2025-07-11
Gemini API Gets a Batch Mode for High-Throughput Workloads

Google's Gemini API now offers a batch mode, an asynchronous endpoint ideal for high-throughput tasks where latency isn't critical. Submit large jobs, let the system handle processing, and retrieve results within 24 hours at a 50% discount compared to synchronous APIs. Perfect for pre-prepared data needing no immediate response, it offers cost savings, increased throughput, and simplified API calls. Reforged Labs uses it to process massive video ads, significantly improving efficiency and lowering costs. Get started easily with the Google GenAI Python SDK.

(developers.googleblog.com)
Development Asynchronous Processing

Pangolin: Self-Hosted Zero Trust Tunneled Reverse Proxy

2025-07-11
Pangolin: Self-Hosted Zero Trust Tunneled Reverse Proxy

Pangolin is a self-hosted, tunneled reverse proxy server with identity and access control, designed to securely expose private resources across distributed networks. It acts as a central hub, connecting isolated networks – even those behind restrictive firewalls – via encrypted tunnels, enabling easy access to remote services without opening ports. Leveraging WireGuard, Pangolin offers robust features including centralized authentication (SSO, TOTP), role-based access control, and flexible deployment options. Extend its functionality with Traefik plugins. Use cases include bypassing port restrictions, deploying business applications, and managing IoT networks. A self-hosted alternative to Cloudflare Tunnels.

(github.com)
Development zero trust

Google DeepMind Open-Sources GenAI Processors: Simplifying LLM Application Development

2025-07-11
Google DeepMind Open-Sources GenAI Processors: Simplifying LLM Application Development

Google DeepMind has released GenAI Processors, an open-source Python library designed to simplify the development of complex Large Language Model (LLM) applications. The library uses a Processor interface to abstract various data processing steps and handles multimodal input via asynchronous stream processing, enabling concurrent execution for improved responsiveness and efficiency. GenAI Processors integrates with the Gemini API and provides examples for building real-time applications such as live transcription and conversational agents.

(developers.googleblog.com)
Development Open Source Library

AI-Powered Form Builder with Unlimited Submissions

2025-07-10
AI-Powered Form Builder with Unlimited Submissions

This AI-powered form builder offers unlimited submissions and features an AI form builder, CSV/JSON export, priority support, and mobile building. It also includes advanced analytics, AI-powered analytics, and upcoming features such as team collaboration, custom domains, response flagging, integrations, enhanced webhook support, a logic builder, API data fetching, time input fields, file uploads, and advanced form customization.

(www.ikiform.com)
Development AI form builder form analytics unlimited submissions

Red Hat Launches Free RHEL for Business Developers

2025-07-10
Red Hat Launches Free RHEL for Business Developers

Red Hat has released Red Hat Enterprise Linux for Business Developers, a free enterprise-grade Linux distribution designed to give developers fast, easy access to the same OS used in production environments for business development and testing. Developers get direct, self-serve access, bypassing IT approval, with up to 25 instance deployments. This aims to reduce friction between development and operations teams and address growing software supply chain security threats. It includes signed and curated developer content such as programming languages, open source tools, and databases, as well as Red Hat's container development tool, Podman Desktop.

(nerds.xyz)
Development

Tududi: Task Management, Simplified

2025-07-10
Tududi: Task Management, Simplified

Most task apps are dashboards of endless controls and micro-options. Creating a new task often involves navigating a maze of color pickers, priority levels, and repeat settings. Tududi offers a different approach: streamlined workflow. It prioritizes getting the task written, focusing on flow over features. Instead of presenting a toolkit, tududi offers efficiency.

(medium.com)
Development

Extreme Optimization of a Rust Math Expression Parser: From 43 Seconds to 0.98 Seconds

2025-07-10
Extreme Optimization of a Rust Math Expression Parser: From 43 Seconds to 0.98 Seconds

This article details the author's journey in optimizing a Rust-based math expression parser's runtime from 43 seconds to a blazing 0.98 seconds. Through a series of optimizations, including avoiding unnecessary memory allocations, directly processing byte streams, removing the `Peekable` iterator, utilizing multithreading and SIMD instructions, and employing memory-mapped files, a dramatic performance improvement was achieved. The article thoroughly explains the principles and implementation methods of each optimization step, supported by flame graphs and performance data. This is a compelling case study on performance optimization, showcasing meticulous programming and clever use of Rust's features.

(rpallas.xyz)
Development Math Expression Parser
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