#day_2 Today, I took a deep dive into of my project and successfully set up all the backend APIs. It was a productive session focused on building the core server functionality and connecting it with the database. @rohit_negi9

#JaiHo! The moment you've been waiting for is finally here! Coder Army is set to unleash its biggest update yet. Mark your calendars and get ready for October 18th, because this is the Strike launch that's going to change everything.@rohit_negi9 @adityatandon02

🚀 #day_01 Just started building my own LeetCode Clone! ✅ Full-stack project (Frontend + Backend integration) ⚙️ Features: problem listings, code editor, submissions, and live test-case evaluation. 💻 Tech stack: React, Node.js, Express, MongoDB @rohit_negi9

#project_done here i used only html and css, #live_link--> https://t.co/7wTBNXOoiG @rohit_negi9 ,@adityatandon02

📚 Completed till lecture 70 of DSA playlist (Coder Army). 🔄 From today: watching new videos + revising old ones. 💻 Also started working on a major project (Frontend + Backend). #DSA #100DaysOfCode #WebDev @rohit_negi9

#day_36 I Finished my backend series! Now I’m starting a major full-stack project combining frontend + backend. 💻 Today I explored WebRTC in depth: ICE candidates (how browsers find the best path) Signaling via backend Peer-to-peer video/audio streaming @rohit_negi9

#day_35_Today i Just explored WebRTC – the tech behind real-time video/audio calls in your browser! ✅ Peer-to-Peer ✅ No plugins ✅ Powers Meet, Zoom, Teams 🔗 Handles audio, video & data in real time. Future of real-time apps = WebRTC @rohit_negi9

#day_31 Explored WebSockets today Built rooms Added broadcasting 📢 One-to-one chats 🔄 Learned multiple tabs = multiple sockets ⚡ Real-time apps feel much clearer now! 💻🔥 @rohit_negi9 @adityatandon02

#day_31 Just explored WebSockets today! 🔥 They enable real-time, two-way communication between client & server ⚡ Perfect for chats, stock updates, games & notifications. Next step: hands-on implementation 💻🚀 #WebSockets #DevJourney @rohit_negi9

#day_30 Explored AI Agents today 🤖 👉 Realized LLMs can’t directly call APIs 👉 Tools bridge the gap (reasoning → action) 👉 Built a small project using Weather API 🌦️ APIs + Agents = Smarter AI 🚀 #AI #LLM #Agents @rohit_negi9

#day_28 Backend_Journey Today I explored LLMs & why tokenization matters. LLMs don’t “understand” words – they predict the next token. Tokenization = breaking text into small units the model can handle. It’s the bridge between human language & AI processing. @rohit_negi9

#day_26_in_backend Explored the Sliding Window in backend today 🔑 Key & Score → unique requests + timestamps 🪟 Sliding vs Fixed → more accurate & dynamic ✅ Values stay unique → reliable queries ⚡ Efficient → great for rate limiting, analytics & security @rohit_negi9

#day_25_in_backend_journey Explored Rate Limiting today 🚀 Started with first principles → asked why we need it. Tried a Token Bucket (messy 🥲). Then moved to Fixed Window Rate Limiter → simple & effective ✅ Key learning: Bad solutions teach you why good ones exist.

#day_24_in_backend_journey User Clicks Logout: The frontend calls the /logout endpoint. Server Deletes Session: The server receives the request, takes the token from the cookie, and deletes the corresponding key from Redis. @rohit_negi9

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#day_22 today i explored about ✅ Add .env to .gitignore, commit .env.example instead. ✅ Use a secret manager for production. ✅ Validate env vars at startup (envalid, joi, or custom check). ✅ Keep router files focused (one resource per file). ✅ Apply authentication

#day_21 💡 Key Takeaways: JWT helps in stateless authentication. Middleware ensures secure route access. Always keep your JWT_SECRET safe and set token expiry. 🔥 This is something I explored today, and I feel it’s a must-know for every backend developer working with APIs.

#day_20 i explored about following things JWK = Public key info used to verify tokens. JWT = Secure token containing your identity/claims. Cookies = Browser’s way of keeping you logged in across requests.

#day_19 today i explored about the Digital Signature → Uses private key to sign and public key to verify, ensuring authenticity & integrity of data. Api integration , Password validation

#Day_17: Today, I explored how passwords are stored in databases. #Why_Hashing? One-way function: verifiable, not reversible. Prevents attackers from stealing raw credentials. Adding salt protects against rainbow table attacks.