Ferawi Mabla🔌🇨🇩

15 Must-Know Software Design Patterns: 1. Singleton 2. Factory Method 3. Builder 4. Adapter 5. Decorator 6. Facade 7. Proxy 8. Composite 9. Observer 10. Strategy 11. Command 12. Iterator 13. State 14. Template Method 15. Chain of Responsibility ♻️ Repost to help others in your network

"मौत और जिंदगी के बीच बस कुछ ही सेकंड्स का फासला था, और उस फासले को इस वफादार दोस्त ने खत्म कर दिया।" ❤️🩹

Très bons échanges ce mardi 12/05/26 à #Bruxelles avec @JozefSikela Commissaire européen en charge des Partenariats internationaux. Dialogue franc et sincère pour promouvoir des projets structurants susceptibles de replacer la #RDC dans la nouvelle configuration de l’économie mondiale.

Node JS Backend Project Ideas • Authentication API → JWT, hashing, middleware • User CRUD API → REST APIs, DB models • Blog REST API → Relations, authorization • URL Shortener API → Hashing, Redis cache • Search & Pagination API → Query optimization • File Upload API → Streams, cloud storage • Rate Limiter Service → Redis, throttling • Realtime Chat Backend → WebSockets • Role-Based Access API → RBAC, permissions • OAuth2 Auth Service → OAuth flows • Job Queue Service → Background workers • Recommendation API → Data aggregation • Video Streaming API → HTTP streaming • High-Performance API → Caching strategies • Distributed Storage Service → Microservices

which localhost port do you use the most for backend development? • localhost:3000 • localhost:5173 • localhost:8080 • localhost:8000

How to design a terrible API: - Return 200 OK with "{ success: false }" in the response A better solution? Return Problem Details for API errors. At the very least, agree on a standard error response as a team. I've seen APIs returning 200 OK with an error in the envelope (sorry, GraphQL devs). Problem Details is a standard for specifying errors in HTTP API responses. HTTP status codes don't contain enough details about errors to be helpful. Implementing Problem Details in .NET is actually straightforward. Here's a simple guide: milanjovanovic.tech/blog/problem-d… How do you return error responses in your APIs? P.S. If you want to learn how to build production-ready REST APIs using the latest ASPNET Core features and best practices, this is for you: milanjovanovic.tech/pragmatic-rest…

Ngaliema devant regideso a suka mûr non loin de l’entrée du camp colonel tshatshi embouteillages de ce matin . Il est temps de stopper l’importance des motos taxis en #RDC.

@LwambaTeddy Prof

#Kinshasa : La #SNEL, pilier de la modernisation de l’éclairage public Ce lundi 4 mai 2026, j’ai eu l’honneur de prendre part à une séance de travail de haut niveau avec le Gouverneur de la ville de Kinshasa, #Daniel_Bumba, autour d’un enjeu majeur pour notre capitale : la modernisation de l’éclairage public. À cette occasion, j’ai réaffirmé l’engagement de la Société Nationale d’Électricité #SNEL_SA à accompagner durablement le Gouvernement provincial dans la mise en œuvre de solutions énergétiques fiables, innovantes et adaptées aux besoins croissants de Kinshasa. @Presidence_RDC @SuminwaJudith @daniel_bumba_01 @ted_lwamba @molendosakombi @IsralMutombo11 @TopCongo @actualitecd @GouvernoratK @Snel_Officiel

Man jumps into garbage can to escape charging bull😭

How the job market be : Hiring for an unpaid intern frontend developer Must haves skills : Python C C++ Java HTML CSS JavaScript TypeScript React Next.js Vue Angular Svelte Node.js Express Django Flask FastAPI Spring Boot PHP Laravel Ruby Ruby on Rails Go Rust Kotlin Swift C# .NET SQL MySQL PostgreSQL MongoDB Redis Firebase Supabase Prisma Docker Kubernetes Nginx Linux Git GitHub Gitflow VS Code IntelliJ Cloud Computing AWS Azure GCP DevOps CI/CD Jest PyTest Selenium REST APIs GraphQL WebSockets JWT OAuth Microservices System Design Data Structures & Algorithms Operating Systems DBMS Computer Networks Compilers Computer Architecture Machine Learning Deep Learning NLP Computer Vision Artificial Intelligence PyTorch TensorFlow Scikit-learn Hugging Face LLMs OpenAI APIs RAG Data Engineering ETL Hadoop Spark Snowflake Pandas NumPy Matplotlib Power BI Tableau Cybersecurity Ethical Hacking Penetration Testing Cryptography Blockchain Solidity Web3 UI/UX Figma Tailwind CSS Bootstrap Three.js WebGL Android Development (Java/Kotlin) iOS Development (Swift) Flutter React Native Unity Unreal Engine Game Development AR / VR Agile Scrum Jira Elixir Zig Assembly

インド軍のパレード。 高度人材が豊富な国の軍隊がこれ。

Vue du ciel, Kinshasa dévoile toute son énergie : une ville immense, vibrante, où chaque quartier raconte une histoire 🌆

Après avoir installé le « filet de protection pour enfants » sur le balcon au 28e étage, l'ouvrier démontre au client la solidité du filet

Vital Kamerhe vient de trancher Quand nous étions Zairois , Monsieur Kabila était-il zaïrois comme nous ? Ou était il ? On va tout faire sortir .... Ce n'est pas moi mais KAMERHE

💻✨ Popular Programming Languages & Their Creators: • 🧠 C → Dennis Ritchie (1972) • ⚙️ C++ → Bjarne Stroustrup (1985) • 🟣 C# → Anders Hejlsberg (2000) • 🚀 Go → Robert Griesemer (2009) • ☕ Java → James Gosling (1995) • 🌐 JavaScript → Brendan Eich (1995) • 🐘 PHP → Rasmus Lerdorf (1995) • 🐍 Python → Guido van Rossum (1991) • 💎 Ruby → Yukihiro Matsumoto (1995) • 🍎 Swift → Chris Lattner (2014) 🚀

MASTER DSA DATA STRUCTURES & ALGORITHMS MASTER TREE │ ├── 1. Basics │ ├── What is DSA │ ├── Time Complexity │ │ ├── Big-O Notation │ │ ├── Best / Average / Worst Case │ │ └── Common Complexities (O(1), O(n), O(log n), O(n²)) │ ├── Space Complexity │ └── Recursion Basics │ ├── 2. Arrays │ ├── Traversal │ ├── Insertion / Deletion │ ├── Prefix Sum │ ├── Kadane’s Algorithm │ └── Sliding Window │ ├── 3. Strings │ ├── String Manipulation │ ├── Pattern Matching │ │ ├── Naive │ │ ├── KMP Algorithm │ │ └── Rabin-Karp │ ├── Palindromes │ └── Anagrams │ ├── 4. Linked List │ ├── Singly Linked List │ ├── Doubly Linked List │ ├── Circular Linked List │ ├── Reverse Linked List │ └── Cycle Detection (Floyd’s Algorithm) │ ├── 5. Stack │ ├── LIFO Concept │ ├── Implementation (Array / LL) │ ├── Infix / Postfix / Prefix │ ├── Balanced Parentheses │ └── Monotonic Stack │ ├── 6. Queue │ ├── FIFO Concept │ ├── Simple Queue │ ├── Circular Queue │ ├── Deque │ └── Priority Queue (Heap) │ ├── 7. Hashing │ ├── Hash Functions │ ├── Collision Handling │ │ ├── Chaining │ │ └── Open Addressing │ ├── HashMap / HashSet │ └── Frequency Counting │ ├── 8. Trees │ ├── Binary Tree │ ├── Binary Search Tree (BST) │ ├── Tree Traversals │ │ ├── Inorder │ │ ├── Preorder │ │ └── Postorder │ ├── Height / Depth │ └── Lowest Common Ancestor (LCA) │ ├── 9. Binary Search │ ├── Classic Binary Search │ ├── Search in Rotated Array │ ├── Lower Bound / Upper Bound │ └── Binary Search on Answer │ ├── 10. Heaps │ ├── Min Heap │ ├── Max Heap │ ├── Heap Operations │ └── Top K Elements │ ├── 11. Graphs │ ├── Representation (Adj List / Matrix) │ ├── BFS (Breadth First Search) │ ├── DFS (Depth First Search) │ ├── Cycle Detection │ ├── Topological Sort │ └── Shortest Path │ ├── Dijkstra │ └── Bellman-Ford │ ├── 12. Greedy Algorithms │ ├── Activity Selection │ ├── Huffman Coding │ ├── Fractional Knapsack │ └── Interval Problems │ ├── 13. Dynamic Programming │ ├── Memoization │ ├── Tabulation │ ├── 0/1 Knapsack │ ├── Longest Common Subsequence │ ├── Longest Increasing Subsequence │ └── DP on Grids / Trees │ ├── 14. Backtracking │ ├── Subsets │ ├── Permutations │ ├── N-Queens │ └── Sudoku Solver │ ├── 15. Bit Manipulation │ ├── AND, OR, XOR │ ├── Bit Masking │ ├── Set / Unset Bits │ └── Power of Two │ ├── 16. Advanced Topics │ ├── Trie │ ├── Segment Tree │ ├── Fenwick Tree (BIT) │ ├── Disjoint Set (Union-Find) │ └── KMP / Z Algorithm │ ├── 17. Problem Solving Patterns │ ├── Two Pointers │ ├── Sliding Window │ ├── Fast & Slow Pointers │ ├── Divide & Conquer │ └── Meet in the Middle │ └── 18. Real-World Applications ├── Search Engines ├── Recommendation Systems ├── Navigation Systems (Maps) ├── Social Networks └── Game Development

In a heartbeat, he went from bystander to hero. You won't believe how the mother responded.

You see this DTO: class OrderDTO { public String userName; public String userEmail; public String userAddress; public String productName; public double price; public String paymentStatus; } This DTO is returned by 10 different APIs. What long-term design problem do you see?

One of the BEST channels for System Design: → @_hellointerview" target="_blank" rel="nofollow noopener">youtube.com/@_hellointervi… 1. API Design youtube.com/watch?v=DQ57zY… 2. Sharding youtube.com/watch?v=L521gi… 3. Caching youtube.com/watch?v=1NngTU… 4. Concurrency youtube.com/watch?v=d8rmos… 5. Data Modeling youtube.com/watch?v=TUcPS6… 6. Rate Limitter youtube.com/watch?v=TUcPS6…

What for what? 🖼️ Frontend →HTML + CSS →Javascript →React →VueJs →Angular →Svelte 🔙 Backend: →Nodejs →Python/Django →PHP/Laravel →C# →Java 💽 Database →MongoDB →MySQL →Postgres →SQLite 📱Phones: →React Native →Flutter →Swift 💻Desktop: →Electron →Tauri →C# →Swift 🖥️ System →Go →C++ →Rust Add more 💬👇