Showing 1451 open source projects for "qr code system"

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  • 1
    guide-rpc-framework

    guide-rpc-framework

    A custom RPC framework implemented by Netty+Kyro+Zookeeper

    The guide-rpc-framework is a Java implementation of a Remote Procedure Call (RPC) framework built on Netty, Kyro (for serialization), and Zookeeper (for service discovery and coordination). It’s aimed primarily at learners and practitioners of distributed systems who want to see how you might build an RPC system from first principles rather than just use an existing library. The project provides code for client-side stubs, server-side skeletons, method dispatching, serialization, load balancing, and node management via Zookeeper. Since RPC remains a foundational building block in microservices, server architectures, and high-performance systems, this codebase helps you trace how requests are framed, routed, serialized, and executed across nodes. ...
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  • 2
    iOS Interview Questions

    iOS Interview Questions

    iOS interview questions

    ...Topics range from language fundamentals (memory management, ARC, value vs. reference types), to UIKit/SwiftUI, concurrency, Grand Central Dispatch, background execution, networking, design patterns, system frameworks, and architecture decisions. Each question is usually backed by sample explanations or code snippets, helping candidates understand not just what to answer but why it matters and how to reason about tradeoffs. Because the repo is maintained, it evolves to reflect changes in the iOS ecosystem: for example, newer Swift concurrency, Combine, SwiftUI, structured concurrency, or recent platform APIs. ...
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  • 3
    Koa

    Koa

    Expressive middleware for node.js using ES2017 async functions

    ...This design encourages readable middleware, robust error handling, and straightforward composition for tasks like authentication, logging, and body parsing. In production, Koa’s simplicity and async-first approach translate to predictable performance and maintainable server code.
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  • 4
    Floem

    Floem

    A native Rust UI library with fine-grained reactivity

    Floem is a cross-platform GUI framework for Rust. It aims to be extremely performant while providing world-class developer ergonomics. Supporting both GPU and CPU rendering, Floem gives you performance that's closest to bare metal. Also primitives are provided to help the developer to write performant UI code without too much effect.
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  • 5
    OTOMI

    OTOMI

    Self-hosted DevOps Platform for Kubernetes

    Otomi is an open source self-hosted PaaS to run on top of any Kubernetes cluster and is placed in the CNCF landscape under the PaaS/Container Service section. A PaaS attempts to connect many of the technologies found in the CNCF landscape in a way to provide direct value. Deploy containerized apps with a few click without writing any K8s YAML manifests. Get access to logs and metrics of deployed apps. Store charts and images in a private registry. Build and run custom CI pipelines. Enable...
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  • 6
    Cursor Cookbook

    Cursor Cookbook

    This repo contains small examples for building with Cursor

    ...It provides practical recipes that demonstrate how to integrate AI into development workflows effectively. The repository focuses on real-world use cases such as automation, code generation, and system design. It helps developers understand how to structure prompts and workflows for consistent results. The examples are designed to be easily adaptable to different projects and environments. It emphasizes productivity and clarity in AI-driven development. Overall, it acts as a reference guide for maximizing the value of AI coding assistants.
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  • 7
    Symfony ErrorHandler

    Symfony ErrorHandler

    Provides tools to manage errors and ease debugging PHP code

    Symfony ErrorHandler is a component that handles and logs PHP errors and exceptions in a structured way. It replaces PHP's default error handling with a more user-friendly and informative system. The component provides detailed error pages for development environments while ensuring minimal disruption in production. It integrates seamlessly with Symfony applications and supports custom error pages.
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  • 8
    tapjs

    tapjs

    Test Anything Protocol tools for node

    ...An easily extensible TAP test framework, with outstanding TypeScript support, a CLI, plenty of assertion methods, snapshots, object/method spies, module mocking, file system fixtures, lifecycle hooks, test filtering, comprehensive code coverage analysis, color-accessible test reporters, and more. Software testing is a software and user experience design challenge that balances on the intersection of many conflicting demands.
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  • 9
    Sensu Go

    Sensu Go

    Simple. Scalable. Multi-cloud monitoring

    ...The shift from static to dynamic infrastructure requires a change in approach to monitoring, from host-based to functional role-based. Connectivity moves from remote polling to publish-subscribe, the control plane moves from point-and-click interfaces to infrastructure as code workflows and self-service developer APIs.
    Downloads: 1 This Week
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  • 10
    ArrayFire

    ArrayFire

    ArrayFire, a general purpose GPU library

    ArrayFire is a general-purpose tensor library that simplifies the process of software development for the parallel architectures found in CPUs, GPUs, and other hardware acceleration devices. The library serves users in every technical computing market. Data structures in ArrayFire are smartly managed to avoid costly memory transfers and to take advantage of each performance feature provided by the underlying hardware. The community of ArrayFire developers invites you to build with us if...
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  • 11
    VIVE Input Utility for Unity

    VIVE Input Utility for Unity

    A toolkit that helps developing/prototyping VR apps

    ...UGUI now catches events from your Vive controllers! API to access device input/tracking by role (eg. LeftHand/RightHand), instead of device index. Binding system, able to bind device to specific role, help manage multiple tracking devices.
    Downloads: 0 This Week
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  • 12
    uni-app

    uni-app

    A cross-platform framework using Vue.js

    uni-app is a cross-platform framework that lets developers build applications with Vue syntax and deploy them to multiple targets: iOS, Android, web (H5), and a range of mini-program ecosystems. It abstracts platform differences through a unified component and API layer, so most business logic and UI code can be shared across outputs. The tooling includes a CLI, IDE support, and a plugin market that provides native integrations, UI kits, and deployment helpers. Developers can choose between...
    Downloads: 4 This Week
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  • 13
    Go Container Registry

    Go Container Registry

    Go library and CLIs for working with container registries

    ...High-level utilities like crane and gcrane offer convenient CLIs for everyday tasks—listing tags, copying images between registries, flattening, creating tarballs, and more. The library handles authentication via a pluggable keychain system that understands Docker config files, credential helpers, and environment credentials. It understands multiple on-disk layouts (tarball, OCI layout, remote) and lets you transform images in memory by adding or rebasing layers, adjusting config, and annotating manifests. Because everything is regular Go code, it’s straightforward to embed in CI/CD systems, policy engines, and bespoke supply-chain tooling.
    Downloads: 3 This Week
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  • 14
    faster_react

    faster_react

    Full Stack web framework with React + Faster

    Faster React is a full-stack web framework built on React and Faster, designed for efficient development with automatic handling of routes, frontend bundling, and server-side rendering (SSR). It is fully compatible with Deno and serverless environments like Deno Deploy. The framework automatically detects changes, reloads components, and minifies frontend code for production. With Faster React, developers can focus on building applications while the framework handles essential backend and...
    Downloads: 0 This Week
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  • 15
    Robotgo

    Robotgo

    RobotGo, Go Native cross-platform GUI automation

    Golang Desktop Automation. Control the mouse, keyboard, bitmap and image, read the screen, process, Window Handle and global event listener. RobotGo supports Mac, Windows, and Linux(X11); and robotgo supports arm64 and x86-amd64. Package robotgo Go native cross-platform system automation. Please make sure Golang, GCC is installed correctly before installing RobotGo.
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  • 16
    AngleSharp

    AngleSharp

    The ultimate angle brackets parser library parsing HTML5, MathML, SVG

    AngleSharp follows the W3C specifications and gives you the same results as state of the art browsers. Besides the official API AngleSharp adds some useful extension methods on top. This makes working with the DOM convenient. AngleSharp integrates everything you need to explore and mutate the DOM tree. Node retrieval is straight forward by using powerful CSS query selectors. The CSS queries in AngleSharp are super fast and very simple to use. AngleSharp respects the relationship of HTML with...
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  • 17
    CocoaLumberjack

    CocoaLumberjack

    A flexible logging framework for Mac and iOS

    CocoaLumberjack is a fast & simple, yet powerful & flexible logging framework for macOS, iOS, tvOS and watchOS. First, install CocoaLumberjack via CocoaPods, Carthage, Swift Package Manager or manually. Then use DDOSLogger for iOS 10 and later, or DDTTYLogger and DDASLLogger for earlier versions to begin logging messages. Carthage is a lightweight dependency manager for Swift and Objective-C. It leverages CocoaTouch modules and is less invasive than CocoaPods. As of CocoaLumberjack 3.6.0,...
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  • 18
    type-challenges

    type-challenges

    Collection of TypeScript type challenges with online judge

    ...Each challenge is a miniature kata where you implement types that transform other types—parsing strings, inferring tuples, mapping unions—without writing any runtime code. Problems are arranged from warm-ups to brain-twisters, letting developers build intuition about distributive conditional types, inference in extends, variance, and other corner cases of the type system. The repository includes tests for each puzzle so you get immediate, compiler-driven feedback when your solution is correct. As a result, it doubles as both training material and a living reference for advanced patterns used in real libraries. ...
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  • 19
    Smallpond

    Smallpond

    A lightweight data processing framework built on DuckDB and 3FS

    smallpond is a lightweight distributed data processing framework built by DeepSeek, designed to scale DuckDB workloads over clusters using their 3FS (Fire-Flyer File System) backend. The idea is to preserve DuckDB’s fast analytics engine but lift it from single-node to multi-node settings, giving you the ability to operate on large datasets (e.g. petabyte scale) without moving to a heavyweight system like Spark. Users write Python-like code (via DataFrame APIs or SQL strings) to express their transformations; behind the scenes, tasks are scheduled (often via Ray) and pushed into DuckDB instances operating on partitioned data. ...
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  • 20
    Gitit

    Gitit

    A wiki using HAppS, pandoc, and git

    Gitit is a wiki application written in Haskell that uses Happstack for serving and Pandoc for markup conversion. Wiki content and attachments are stored in Git, Darcs, or Mercurial repositories, allowing versioning via VCS or web editing. To run gitit, you'll need git in your system path. (Or darcs or hg, if you're using darcs or mercurial to store the wiki data.) Gitit assumes that the page files (stored in the git repository) are encoded as UTF-8. Even page names may be UTF-8 if the file...
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  • 21
    Dockertest

    Dockertest

    Write better integration tests!

    Use Docker to run your Golang integration tests against third party services on Microsoft Windows, Mac OSX and Linux! When developing applications, it is often necessary to use services that talk to a database system. Unit Testing these services can be cumbersome because mocking database/DBAL is strenuous. Making slight changes to the schema implies rewriting at least some, if not all of the mocks. The same goes for API changes in the DBAL. To avoid this, it is smarter to test these specific...
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  • 22
    Werkzeug

    Werkzeug

    The comprehensive WSGI web application library

    ...It is up to the developer to choose a template engine, database adapter, and even how to handle requests. Includes an interactive debugger that allows inspecting stack traces and source code in the browser with an interactive interpreter for any frame in the stack. Includes a full-featured request object with objects to interact with headers, query args, form data, files, and cookies. Includes a response object that can wrap other WSGI applications and handle streaming data. Includes a routing system for matching URLs to endpoints and generating URLs for endpoints, with an extensible system for capturing variables from URLs. ...
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  • 23
    ElasticJob

    ElasticJob

    Distributed scheduled job framework

    ...ElasticJob-Lite is a lightweight, decentralized solution that provides distributed task sharding services. ElasticJob-Cloud uses Mesos to manage and isolate resources. It uses a unified job API for each project. Developers only need code one time and can deploy at will. Support job sharding and high availability in distributed system. Scale out for throughput and efficiency improvement. Job processing capacity is flexible and scalable with the allocation of resources. Execute job on suitable time and assigned resources. Aggregation same job to same job executor. Append resources to newly assigned jobs dynamically. ...
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  • 24
    Metrics

    Metrics

    Capturing JVM and application-level metrics

    Metrics is a Java library which gives you unparalleled insight into what your code does in production. Metrics provides a powerful toolkit of ways to measure the behavior of critical components in your production environment. With modules for common libraries like Jetty, Logback, Log4j, Apache HttpClient, Ehcache, JDBI, Jersey and reporting backends like Graphite, Metrics provides you with full-stack visibility. The central library for Metrics is metrics-core, which provides some basic...
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  • 25
    AWS SDK for PHP

    AWS SDK for PHP

    Repository of the AWS SDK for PHP

    ...To run the SDK, your system will need to meet the minimum requirements, including having PHP >= 5.5. We highly recommend having it compiled with the cURL extension and cURL 7.16.2+ compiled with a TLS backend (e.g., NSS or OpenSSL). To run the SDK, your system will need to meet the minimum requirements, including having PHP >= 5.5. We highly recommend having it compiled with the cURL extension and cURL 7.16.2+ compiled with a TLS backend (e.g., NSS or OpenSSL).
    Downloads: 1 This Week
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