--- title: "Geetika Vasistha (@Augustine13) | Hashnode" description: "A perpetual learner. Read the latest articles by Geetika Vasistha on Hashnode." url: "https://hashnode.com/@Augustine13" --- @Augustine13 # Geetika Vasistha @Augustine13 · Delhi NCR · Joined September 2025 A perpetual learner. ### [APIs Explained: Endpoints, Methods, and Real Examples](https://augustines-blog.hashnode.dev/apis-explained-endpoints-methods-and-real-examples?utm_source=hashnode&utm_medium=feed) An API (Application Programming Interface) allows different software systems to communicate with each other in a structured way. Instead of accessing a database or service directly, applications interact through endpoints exposed by an API. An endpoi... 2 min read · [augustines-blog.hashnode.dev](https://augustines-blog.hashnode.dev/apis-explained-endpoints-methods-and-real-examples?utm_source=hashnode&utm_medium=feed) [Feb 8](https://hashnode.com/posts/apis-explained-endpoints-methods-and-real-examples/6988d107222f50bdb5fc66c0) ### [Learning Backend Development in 2026: What’s Changing and How to Adapt](https://augustines-blog.hashnode.dev/learning-backend-development-in-2026-whats-changing-and-how-to-adapt?utm_source=hashnode&utm_medium=feed) A practical guide to learning backend development in 2026 — what’s changed, what still matters, and how to stay relevant as systems, AI, and cloud platforms 5 min read · [augustines-blog.hashnode.dev](https://augustines-blog.hashnode.dev/learning-backend-development-in-2026-whats-changing-and-how-to-adapt?utm_source=hashnode&utm_medium=feed) [Jan 10](https://hashnode.com/posts/learning-backend-development-in-2026-whats-changing-and-how-to-adapt/6961e2aac296c620608e5dc2) ### [Open Source Contribution on Kaggle: From Consumer to Contributor](https://augustines-blog.hashnode.dev/open-source-contribution-on-kaggle-from-consumer-to-contributor?utm_source=hashnode&utm_medium=feed) I joined Kaggle the same way most people do. I opened a few competitions, downloaded a dataset, ran a notebook, stared at the leaderboard… and quietly closed the tab, thinking,“Everyone here seems way ahead of me.” For a long time, I treated Kaggle a... 3 min read · [augustines-blog.hashnode.dev](https://augustines-blog.hashnode.dev/open-source-contribution-on-kaggle-from-consumer-to-contributor?utm_source=hashnode&utm_medium=feed) [Jan 5](https://hashnode.com/posts/open-source-contribution-on-kaggle-from-consumer-to-contributor/695bf1b4b89faa0f5d2f465e) ### [Advanced GitHub: Beyond Commits, Pull Requests, and Repositories](https://augustines-blog.hashnode.dev/advanced-github-beyond-commits-pull-requests-and-repositories?utm_source=hashnode&utm_medium=feed) GitHub is no longer just a place to store code. For advanced developers, it’s a collaboration engine, automation platform, security layer, and DevOps backbone. In this article, we’ll go beyond basic GitHub usage and explore advanced GitHub concepts t... 4 min read · [augustines-blog.hashnode.dev](https://augustines-blog.hashnode.dev/advanced-github-beyond-commits-pull-requests-and-repositories?utm_source=hashnode&utm_medium=feed) [Dec 25, 2025](https://hashnode.com/posts/advanced-github-beyond-commits-pull-requests-and-repositories/694d2698a5a7fc408d1c08ae) ### [RAG vs CAG: Understanding the Next Generation of Context-Aware AI Systems](https://augustines-blog.hashnode.dev/rag-vs-cag-understanding-the-next-generation-of-context-aware-ai-systems?utm_source=hashnode&utm_medium=feed) Modern AI models such as GPT, Llama, and Claude are powerful, but they still have a major limitation: they cannot access new, private, or domain-specific information on their own.To overcome this, developers created methods to provide external knowle... 4 min read · [augustines-blog.hashnode.dev](https://augustines-blog.hashnode.dev/rag-vs-cag-understanding-the-next-generation-of-context-aware-ai-systems?utm_source=hashnode&utm_medium=feed) [Nov 16, 2025](https://hashnode.com/posts/rag-vs-cag-understanding-the-next-generation-of-context-aware-ai-systems/691a15f36123646027151ad9)