College Code @collegecodenet
On the way to Mars Joined June 2016-
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Welcome to the future 🤝
Return URLs play an important role in client-backend communication, especially in OAuth, payments, and form submissions. They tell the backend where to send users after an action, like logging in or completing a purchase. Always validate them to prevent open redirects.
OAuth is a secure way for apps to request access to user data without asking for passwords. Instead, it uses temporary tokens to grant limited access. How it works: 1. User clicks “Log in with Google” 2. Google asks for permission to share certain info 3. If approved, Google…
A key-value store is a simple, high-performance database that stores data as key-value pairs. It’s great for caching, session management, and fast lookups since data is accessed directly by its key instead of running complex queries. Store: “user:123” → “Chris” “cart:456” → “2…
Middleware acts as a bridge between requests and responses in an app. It can run before a request reaches your app or after a response is sent back. It’s used for things like authentication, logging, caching and more. ➡️ Incoming request → Middleware → App ⬅️ Outgoing…
Hashing converts data into a fixed-length, unique fingerprint. It’s commonly used for passwords, digital signatures and data integrity. Even a small change in input drastically changes the output. 🔹 "Fox" → DFCD 3454 BBEA ... 2D17 🔹 "fox" → ACBD 18DB 4CC2 ... 85CE 🔹 "Box"…
E2E (End-to-End) testing checks if your entire application works as expected by simulating real user interactions from start to finish. It ensures all components: frontend, backend, and integrations function together seamlessly. Think of it as a final run to catch any issues…
Encryption vs. Cryptography Encryption: Converts data into a secure format using algorithms & keys to restrict access (e.g., protecting emails & passwords). Cryptography: The science of securing info using encryption, hashing, digital signatures & more. It protects data in…
Advice for junior devs landing their first job: - Perfect your resume, LinkedIn, and portfolio. - Research the company & prepare thoughtful questions. - Dress professionally—first impressions matter. - Build rapport with the interviewer, people hire those they like, even if…
There are over 700 programming languages in use today, more than double the number of languages spoken in the U.S.
Here's a quick rundown of the top React 19 features: 1️⃣ React Server Components: Enables rendering parts of the app on the server, improving initial load times and reducing the amount of JavaScript sent to the client for better performance. 2️⃣ Automatic Batching: Batches state…
OpenAI slashes AI costs with high-performance GPT-4o mini developer-tech.com/news/openai-sl…
"Do not tie your identity as a professional to a particular language, technology or framework. You will outlast all those things many times over." - Laurie Voss
Container Orchestration tools like Kubernetes manage the lifecycles of containers in large and dynamic environments. Automating deployments, scaling, and operations of application containers across clusters of hosts.
The Silk Road, a dark web marketplace on Tor, facilitated over $1 billion in illegal transactions, mainly with cryptocurrencies. Its founder, "Dread Pirate Roberts," was arrested in 2013, showcasing the challenges in policing the anonymous web.
Continuous Integration/Continuous Deployment (CI/CD) is a DevOps practice that automates the integration of code changes and the deployment of applications to production, significantly speeding up the development cycle and reducing manual errors.
REST APIs are the backbone of modern applications, enabling scalable and flexible web service interactions using HTTP methods like GET, POST, PUT, and DELETE. They facilitate a stateless communication between clients and servers.
Sequential vs Parallel data fetching
In 2014, the Heartbleed bug exposed a critical vulnerability in the OpenSSL cryptographic library, affecting millions of web servers. This incident highlighted the importance of security in open-source projects and the need for comprehensive code audits. buff.ly/48BLghb
The Agile software development methodology, introduced in the early 2000s, emphasizes flexibility, customer feedback, and iterative progress. It contrasts with traditional, plan-driven approaches, enabling teams to adapt more quickly to changing requirements.

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