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The GPS for your API. Path Params? Query Params? Versioning? If your web apps are confusing you, master routing first! Full guide on web routing here! 👇 https://t.co/zSABq1hOgL #API #WebDev #Routing #WebDevelopment #python

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The GPS for your API. Path Params? Query Params? Versioning? If your web apps are confusing you, master routing first! Full guide on web routing here! 👇 https://t.co/zSABq1hOgL #API #WebDev #Routing #WebDevelopment #python

Ever wondered what really happens when you click a button on Instagram? Just dropped a blog breaking down how backends actually work, from browser - DNS - server - database, using simple language and real-world flow. Read here: https://t.co/20ujHqd1xR #WebDevelopment #AWS

Ever wondered what really happens when you click a button on Instagram? Just dropped a blog breaking down how backends actually work, from browser - DNS - server - database, using simple language and real-world flow. Read here: https://t.co/20ujHqd1xR #WebDevelopment #AWS

AI agents are more than chatbots,they reason, use tools, and act like digital teammates. Here’s a simple breakdown of how they actually work. Read the blog 👇 https://t.co/jaXNEHSyBz #LLM #AI #AgenticAI

AI agents are more than chatbots,they reason, use tools, and act like digital teammates. Here’s a simple breakdown of how they actually work. Read the blog 👇 https://t.co/jaXNEHSyBz #LLM #AI #AgenticAI

If your load balancer goes down, your users don’t care why — they just feel the outage. Here’s a simple blog explaining real causes + real fixes for LB failures. Blog link:  https://t.co/woY69hDlle #aws #cloudcomputing #devops #architecture #backend #systemdesign #nginx #Web3

If your load balancer goes down, your users don’t care why — they just feel the outage. Here’s a simple blog explaining real causes + real fixes for LB failures. Blog link:  https://t.co/woY69hDlle #aws #cloudcomputing #devops #architecture #backend #systemdesign #nginx #Web3

Just set up my first FastAPI project and it’s insanely smooth. Install, create an app, run uvicorn… boom, your API is live. Wrote a simple breakdown of the whole setup in a beginner-friendly way. Check it out 👇 #FastAPI #Python #Backend #WebDev #APIs https://t.co/7j7fZfrFuD

If JWTs ever felt confusing, this post breaks them down in clean, beginner-friendly language, how they work, what’s inside them, and why the signature matters. Perfect for anyone building APIs or learning backend development. Give it a read! https://t.co/GYOdwKo65F

💡 JWT Login Flow in One Line Credentials → Token → Token in Header → Server Verifies → Access That’s it. JWTs are simple once you understand how they work.

🧠 Key Takeaways ◉ JWTs are not encrypted ◉ Don’t store sensitive info inside ◉ The signature ensures data integrity ◉ JWT is stateless (server stores nothing) ◉ Always send the token in the Authorization header

🔥 The server verifies tokens by: Rebuilding the signature using its secret key Comparing with the signature inside the token If both match → token is legit If not → token is rejected

🛑 Why Signature Matters If someone tries to modify the token (e.g., change role from “user” → “admin”), the signature becomes INVALID. They would need your SECRET KEY to create a valid signature. And they don’t have it. Result? 🚫 Access denied.

🔸 Signature = the most important part Signature = Header + Payload + Secret Key → hashed. This ensures nobody has changed anything inside the token. Only your server knows the secret key.

🔸 Payload = the actual data inside the token ⚠️ Important: JWTs are NOT encrypted. Anyone can decode & see the payload. So DO NOT put passwords, bank details, etc. You can safely put things like: ◆︎ user_id ◆︎ role (admin/user) ◆︎ expiration time

🔸 Header = metadata Contains info like algorithm and token type. { "alg": "HS256", "typ": "JWT" } You usually never touch this.

🤯 What is a JWT exactly? A JWT has 3 parts: 1⃣ Header 2⃣ Payload 3⃣ Signature Example token looks like this: eyJh...bGciOiJIUzI1Ni... Just looks like gibberish, but it’s structured.

📝 Login Flow With JWT: ➥ User sends email + password ➥ Server verifies ➥ Server creates a JWT token ➥ Token is sent back to the user ➥ User stores it (localStorage/cookie) ➥ User sends token in headers for protected routes ➥ Server checks token → allows or denies

🔐 JWT-Based Auth (Token-Based) This one is stateless. The server doesn’t store anything. Instead, it gives you a token (a long string), and YOU keep it. You send this token every time you need access.