17. Stop Using Switch Case in Factories ❌ | Registry-Based Factory Pattern in JavaScript

In this video, we dive deep into the Registry-Based Factory Pattern using JavaScript and Node.js. If you are tired of writing switch-case or if-else logic inside factories, this pattern is for you. The registry-based factory helps you follow the Open/Closed Principle (OCP) by allowing new implementations to be added without modifying the factory code. What you’ll learn in this video: • What is the Registry-Based Factory Pattern • Why switch-case factories violate OCP • How registry-based factories solve scalability issues • Step-by-step JavaScript & Node.js implementation • Real-world examples (Notification & Payment systems) • When to use and when NOT to use this pattern This pattern is widely used in plugin architectures, frameworks, and enterprise applications. 📌 Perfect for: • JavaScript developers • Node.js backend engineers • Design pattern learners • SOLID principles interview preparation 👍 Like, Share & Subscribe for more clean code and design pattern tutorials. Github Link: https://github.com/leelanarasimha Instagram: https://www.instagram.com/leelawebdev/ Telegram: http://t.me/LeelaWebDev Facebook Page: https://www.facebook.com/LeelaWebDev Twitter Page: https://twitter.com/leelanarsimha Linkedin: https://www.linkedin.com/in/leela-narasimha-reddy-86517948/ GitHub: https://github.com/leelanarasimha Youtube Page: https://www.youtube.com/leelawebdev If you like my video, please subscribe to my channel. My Playlists: React Complete Course: https://www.youtube.com/watch?v=LMFAaNWmKII&list=PL_euSNU_eLbfuahgrm63xLCWfpl2MaTAr Vue Complete Course: https://www.youtube.com/watch?v=x0uc670hw_8&list=PL_euSNU_eLbedoBv-RllKj_f2Yh--91nZ Angular NGRX Complete Course: https://www.youtube.com/watch?v=3WI5BEXVkmE&list=PL_euSNU_eLbdg0gKbR8zmVJb4xLgHR7BX Angular Complete Course: https://www.youtube.com/watch?v=wI18jE_LHME&list=PL_euSNU_eLbeAJxvVdJn5lhPWX9IWHhxs TypeScript Complete Course: https://www.youtube.com/watch?v=xns0Vaip4wc&list=PL_euSNU_eLbfJEwuNa43lM89yfev537Mj ES6 Complete Course: https://www.youtube.com/watch?v=tt1SkTpHUUU&list=PL_euSNU_eLbfIr88Sgtalv4W58mTW07V4 Javascript Complete Course: https://www.youtube.com/watch?v=JZmwaniKUUc&list=PL_euSNU_eLbeHPrIcllJ1_9hdcffwGuWi GIT Complete Course: https://www.youtube.com/watch?v=vMdSqMf6BPY&list=PL_euSNU_eLbegnt7aR8I1gXfLhKZbxnYX ESLint Complete Course: https://www.youtube.com/watch?v=OYrIfgi_Ghg&list=PL_euSNU_eLbeVd_eDmWzUpEmXizWQRmEm RxJS Complete Course: https://www.youtube.com/watch?v=Q-iZ1JHA0GE&list=PL_euSNU_eLbc0HclFbirIaMXaXzQJ_K4n Declarative Reactive Programming in Angular Complete Course: https://www.youtube.com/watch?v=P38auPts2vs&list=PL_euSNU_eLberdNLX5idpheqHLjdZltJy Angular CLI Complete Course Tutorial: https://www.youtube.com/watch?v=iEPegoPPHDk&list=PL_euSNU_eLbfmSwZYA3ab3a3JGQk8pQdZ Angular UnitTesting Complete Course: https://www.youtube.com/watch?v=VnaDJOucT-4&list=PL_euSNU_eLbcqJ6_Z3FOZJ8mLZ2oMFItV My Courses Playlist Page: https://www.youtube.com/c/LeelaWebDev/playlists #leelawebdev Join this channel to get access to perks: https://www.youtube.com/channel/UC1J-YH25LCjvLnFjy7WDqGA/join