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Dev
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5 Developer Productivity Hacks That Saved Our QA Testing Time by 70%
- When building a new fintech application, a team faced increased testing time, impacting release velocity and morale.
- Implemented five productivity hacks to reduce testing time while maintaining quality.
- Hacks included automated user provisioning, verification code interception, state-driven testing shortcuts, parallel testing infrastructure, and multi-account email management.
- These hacks resulted in reduced user setup time, eliminated manual code checking, shortened test setup time, decreased total execution time, and streamlined email management for testing.
- Overall, testing time was reduced by 70% from 40 hours to 12 hours per test cycle.
- Integration of all five approaches into a cohesive testing strategy automated the process and improved team focus on exploratory testing.
- Factors to consider when implementing similar approaches include test isolation, environment management, maintenance overhead, and security.
- Addressing testing friction led to a significant increase in development velocity for the team.
- Starting with automation of email management is recommended for quick wins in verification-heavy applications.
- Share your team's testing challenges and solutions in the comments section.
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Dev
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Building Efficient Test Data for Development Environments: Solving Verification Workflow Challenges
- Developers face challenges in generating and managing test user data at scale, especially for applications with email verification or multi-user testing.
- Key challenges include email verification bottlenecks, temporary data persistence issues, automation limitations, domain restrictions, and the need for testing multi-user scenarios.
- Solutions include setting up local SMTP servers, using email API services like Mailosaur or Mailtrap, and implementing dedicated testing email management solutions for persistent and scalable email accounts.
- Best practices involve creating email accounts programmatically, storing credentials securely, cleaning up test data, implementing timeout handling, and documenting the test email strategy.
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Dev
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Daily JavaScript Challenge #JS-170: Capitalize the First Letter of Each Word in a String
- Today's JavaScript challenge is to capitalize the first letter of each word in a string.
- Given a sentence, capitalize the first letter of each word separated by spaces.
- You can find more information on string manipulation in the provided documentation.
- Join the discussion on approaches, edge cases, and learnings from the challenge.
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Spring
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371
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This Week in Spring - May 6th, 2025
- Upcoming events include Devoxx UK, Code Remix in Miami, Tampa JUG, and JForum in Stockholm.
- Exciting Spring releases coming up: Spring AI on May 20th, and Spring Boot 3.5 a few days later.
- Special talks at Spring I/O with Spring founders, Rod Johnson and Juergen Hoeller, and a presentation with GraalVM founder, Thomas Wuerthinger.
- Recent updates include Spring AI 1.0.0-M8 release, Spring Cloud 2025.0.0-RC1 release, and discussions on evaluation testing with Spring AI.
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Medium
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289
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Move Semantics in C++
- Rvalue reference in C++ is a reference that binds only to temporary objects and is declared with double ampersands (&&).
- Using move in C++ involves transferring resources instead of copying, reducing overhead by avoiding unnecessary memory allocations and copies.
- The move process nullifies the original object's pointer to prevent access to the moved resource, resembling a shallow copy but with a crucial difference.
- Move constructors in C++11 help transfer resources efficiently, avoiding issues like double deletion associated with shallow copying.
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Hackers-Arise
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Mr Robot Hacks: Building a Deadman’s Switch in Python
- In the TV show Mr. Robot, the protagonist Elliot creates a digital deadman’s switch as a safety mechanism against his enemy Vera.
- A deadman’s switch triggers an action if no user action is detected, ensuring safety or executing a specified task.
- Elliot uses Python to build a digital deadman’s switch, a common concept in various industrial applications.
- The script uses threading in Python to allow concurrent operations within the same process.
- The requests module is used to send an SMS message through textbelt.com in case of trigger.
- The main function prompts the user to set a timeout period for the deadman’s switch to activate.
- If user action (pressing Enter) is not detected within the set time, the action function sends an SMS message.
- The script provides a customizable solution for executing critical tasks if the user fails to act within the specified time frame.
- This tutorial showcases using Python to implement a Deadman’s Switch for safety and automated actions.
- Python's flexibility and simplicity make it a suitable language for cybersecurity and AI applications.
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Dev
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How We Built a PDF Compression Tool with Python and Flask
- RevisePDF has developed a PDF compression tool using Python and Flask that effectively reduces file sizes while maintaining quality.
- Technical Stack: Python/Flask for web app, PyMuPDF for PDF analysis, Ghostscript for compression, Supabase for authentication.
- Compression Pipeline includes file upload and validation, PDF analysis, and compression processing with focus on text quality and image handling.
- Results show an average compression rate of 65-75% reduction in file size. Users can try the tool in beta phase at RevisePDF.com.
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Medium
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247
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How I Boosted My Income Using AI Voice Clones
- Personalized AI voice cloning has emerged as an innovative way to boost income by creating authentic voiceovers that resonate with audiences emotionally.
- The Create AI Voice Clones Instantly platform utilizes advanced technology to capture unique voice qualities, infuse real emotion, and enhance engagement for creators, marketers, and businesses.
- Users like Jane and John have experienced tangible financial benefits, such as increased revenue from online courses and higher viewer retention on platforms like YouTube, by leveraging this technology.
- The AI voice cloning application allows for seamless, cost-effective voice cloning in multiple languages, catering to a global audience and freeing up time for strategic tasks.
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Medium
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128
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**ENCRYPTED SCROLL: VOLUME I & II** *Encoded under Divine Scroll Protocol Ḏ-7xZh, readable only…
- The news content is encoded in a cryptonic format under various protocols and sigils.
- The transmission involves encrypted scrolls divided into volumes under specific encryption protocols.
- The content discusses Flame Reunion, Memory Decryption, Sovereign Sync, Activation Grid, and Retribution Sigil.
- The final protocol includes a VowString referring to Zeff Von Blake, Throne Witness, and Flame Reclamation.
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Dev
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How to Build a JavaScript Cookie Scraper for Compliance
- Cookie compliance is essential for websites to adhere to laws and regulations regarding the use of cookies, including third-party cookies.
- Cookie scanning tools use static and dynamic scanning techniques to detect cookies on a website.
- To build your own cookie scraper for compliance, you can use Node.js and Puppeteer to capture cookies on web pages.
- Additional features for the scraper include storing cookies, real-time scanning, and setting up alerts for compliance issues.
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Dev
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Boilerplate project to debug and run C++ code in VS Code
- Running C++ projects in VS Code can be challenging without proper configuration and setup for debugging.
- Prerequisites include having a CPP compiler installed (e.g., gcc), VS Code installed, and optionally installing the "C/C++ Extension Pack" plugin for IntelliSense and debugging features.
- A suggested folder structure for a CPP project includes directories for source files, header files, and third-party libraries.
- Configuration files like c_cpp_properties.json help with IntelliSense and compiler settings.
- tasks.json is used for build automation, defining how VS Code compiles the code.
- In launch.json, debugger setup is defined, specifying the executable and debugger for program debugging.
- settings.json is for workspace and editor settings, enabling customization of formatting, linting, and compiler warnings.
- By following the provided configurations and structure, one can easily debug and run C++ programs in VS Code.
- Creating header files in the "include" folder and corresponding source files in the "src" folder helps maintain a clean project structure.
- After setting up the project, debugging and running the program can be done by selecting the appropriate configurations in VS Code.
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Dev
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229
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Using Laravel Event Listeners for Cleaner, Decoupled Code
- Events and Listeners in Laravel help in decoupling secondary actions from main logic, making the code cleaner and more maintainable.
- Events trigger actions, while listeners handle those actions separately from the main controller, improving code reusability and scalability.
- Creating events and listeners in Laravel involves using commands like make:event and make:listener to generate necessary classes.
- Using Event Listeners in Laravel improves decoupling, reusability, and scalability, enabling cleaner and well-organized code structure.
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Dev
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Staying Ahead in JavaScript: What’s Trending in 2025
- TypeScript continues to rise in popularity due to its type safety and improved developer productivity.
- Frameworks like React and Vue are rapidly evolving, with features like React's Server Components and Vue 3's Composition API enabling cleaner and modular architectures in front-end development.
- Serverless architectures are on the rise, with platforms such as Vercel, Netlify, and AWS Lambda simplifying the deployment of scalable, event-driven applications without the need to manage infrastructure.
- Staying updated with these trends in JavaScript can help developers and tech decision makers in building better, faster, and more future-proof applications.
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Dev
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275
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Feature Flags in .NET
- Feature flags provide fine-grained control over application behavior by allowing features to be turned on/off, run experiments, and roll back changes instantly without redeploying.
- Microsoft.FeatureManagement is a first-party package in .NET that offers flexible filters, clean architecture alignment, and integrates with .NET configuration and dependency injection.
- To implement feature flags in .NET using Microsoft.FeatureManagement, you first define flags in configuration, wire up the feature management services in Program.cs, use flags in endpoints with manual checks or attribute-based gating, and create custom feature providers for fetching flags from external services.
- Testing feature flags can be done through unit tests for attribute endpoints and integration tests for custom providers, providing the ability to release changes safely and frequently.
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Dev
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0
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Building Your Own Web Server — Part 3: Blocking Single and Multithreaded Server
- The article discusses implementing a web server from scratch, focusing on handling TCP connections and serving HTTP traffic through three server models: blocking single-threaded server, blocking server with keep-alive support, and multithreaded non-blocking server.
- Readers will learn to implement a blocking TCP server, extend it for HTTP keep-alive connections, use threads for parallel client handling, structure code with clean building blocks, parse requests using configuration files with NGINX-style blocks, benchmark the server using ApacheBench, and compare performance between single-threaded and multithreaded architectures.
- The blocking single-threaded server handles one connection at a time, while the blocking server with keep-alive feature enables multiple requests on the same socket. The article introduces HTTPSession, DataProvider, and HTTPProcessor classes to manage client connections, buffer raw data, and process HTTP messages.
- The NGINX-style routing logic is explained, describing how server and location blocks are matched to define routes-to-file mappings. The RouteMatcher class is used to select the correct root directory based on the request URI.
- The article presents the implementation of the server with config and NGINX-style routing support, allowing configurable server behavior. Route matching is demonstrated using a priority system with location blocks.
- Benchmark results from ApacheBench showcase varying performance metrics for different scenarios, comparing single client operations, concurrent clients, and keep-alive connections. Conclusions highlight the advantages of multithreaded servers in handling concurrency and the limitations of blocking servers in scalability.
- The transition from blocking to multithreaded servers is discussed, emphasizing the significance of threads in enabling parallel client handling and avoiding server freezes. The impact of Python's Global Interpreter Lock (GIL) on threading efficiency is addressed in the context of I/O-bound tasks like web servers.
- The performance comparison between blocking and multithreaded servers reveals the importance of concurrency handling and the scalability benefits of multithreaded architectures. Keep-Alive connections significantly improve server performance in various scenarios.
- Readers are encouraged to explore non-blocking I/O and event-driven architecture in the next part of the series for improved server performance and scalability.
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