Adarsh Rai

Competitive Coder | Proficient in C, C++, Java, SQL

[Adarsh Rai @Adarshrai002]

Built Smart Contact Manager 💻 from a real-life problem!
During exams in Amritsar, I forgot my friend’s number 😅 — so I made a web app to store & manage contacts safely, anytime, anywhere.
💡 Auto-save feature coming soon!
🔗 https://t.co/Jk65U5l9Lp

#Java #SpringBoot #WebApp

[Adarsh Rai @Adarshrai002]

Spring Security Integration Done ✅
Faced issues with authentication flow, 405 errors & logout setup — but finally got everything working!
Each bug made me understand Spring Security much better

#SpringBoot #Java #backenddevloper #buildinpublic

[Adarsh Rai @Adarshrai002]

40% done with Smart Contact Manager! Late-night coding, countless tiny bugs, and some validation nightmares, but every fix teaches me something new and keeps me motivated 😄💻
@java @springcentral
#BuildInPublic #CodingJourney

[Adarsh Rai @Adarshrai002]

No sleep? No problem! 🌙💻

Turned my restless night into productivity by building a mini To-Do App with Spring Boot + Thymeleaf.

#CodeLife #SpringBoot #Thymeleaf #MiniProject #nightowl

[Adarsh Rai @Adarshrai002]

Every project starts with an idea — today mine takes shape: an AI-Based Fitness Tracker 🛠️

Sketched the system design:
🔹 API Gateway
🔹 Kafka (async comms)
🔹 Keycloak (auth)
🔹 Eureka + Config Server
🔹 DBs for persistence
🔹 AI via Gemini API
@springboot @reactjs
@striver_79

[Adarsh Rai @Adarshrai002]

Not all databases are built the same

Here’s a simple breakdown for system design 👇

[Adarsh Rai @Adarshrai002]

🚀 Just finished building an AI Resume Builder!

🛠️ Built with React + Tailwind (frontend) and Spring Boot (backend) + ollama(deepseek) .
✨ Generates clean, customizable resumes powered by AI.

Check out the code here: https://t.co/ibzBSRddNU

[Adarsh Rai @Adarshrai002]

🏢 Availability Zones – Multiple fault-tolerant data centers in each region
📍 Local Zones – Ultra-low latency AWS services near users
🏠 AWS Outposts – AWS infrastructure on-premises
📡 AWS Wavelength – AWS + 5G for next-gen low-latency apps

[Adarsh Rai @Adarshrai002]

"AWS Handles Millions of Users Every Day—What’s Its Secret?
AWS isn’t just a cloud provider—it’s a global powerhouse built for speed, reliability, and scalability. Here’s how it works:

🌍 Regions – Independent AWS hubs worldwide

[Adarsh Rai @Adarshrai002]

AWS’s global reach is what makes it so powerful & resilient. What’s your favorite AWS service? Let’s discuss! 👇

#AWS #CloudComputing #Tech #AWSInfrastructure

[Adarsh Rai @Adarshrai002]

AWS Handles Millions of Users Every Day—What’s Its Secret?

AWS isn’t just a cloud provider—it’s a global powerhouse built for speed, reliability, and scalability. Here’s how it works:

🌍 Regions – Independent AWS hubs worldwide

[Adarsh Rai @Adarshrai002]

🏢 Availability Zones – Multiple fault-tolerant data centers in each region
📍 Local Zones – Ultra-low latency AWS services near users
🏠 AWS Outposts – AWS infrastructure on-premises
📡 AWS Wavelength – AWS + 5G for next-gen low-latency apps

[Adarsh Rai @Adarshrai002]

AI is making real-world applications more accessible than ever! Excited for what’s next. 🚀

#MachineLearning #AI #ComputerVision #DeepLearning #TeachableMachine #LandingAI #ImageProcessing #MLWorkshop #HandsOnAI

[Adarsh Rai @Adarshrai002]

🚀 Attended a hands-on Machine Learning workshop today!

🔹 Trained a Teachable Machine model to detect face orientation (front, left, right) – useful for tracking student attentiveness! 🎯

[Adarsh Rai @Adarshrai002]

🔹 Explored AI in image processing – facial expressions, sign gestures, object detection & quality inspection.
🔹 Built a hand gesture recognition model using Landing AI – dataset labeling, training & deployment
🔹 Ran real-time AI inference on Google Colab with Landing AI’s API.

[Adarsh Rai @Adarshrai002]

🚀 Just started my Cloud Computing journey with AWS!
Today, I learned:
☁️ What cloud computing is
🔹 Types of cloud models (Public, Private, Hybrid, Multi-Cloud)
✅ Why cloud is the future (scalability, cost-saving, security)
💠 Cloud service models (IaaS, PaaS, SaaS)

#AWS

[Adarsh Rai @Adarshrai002]

Gained hands-on experience in data analysis & business insights. Excited to keep learning! 🙌
#SQL #DataAnalysis #RetailSales #BusinessIntelligence #LearningSQL #DataAnalytics #SQLProject

[Adarsh Rai @Adarshrai002]

🚀 Just completed a Retail Sales Analysis project using SQL! 🎉

Cleaned data, explored sales trends, and answered key business questions using SQL queries like:Top customers 💰
Best-selling categories 📊
Peak sales months 🗓️

[Adarsh Rai @Adarshrai002]

Sorting also works, but it's O(n log n) time complexity. Then, I found a much simpler and faster way: Boyer-Moore Voting Algorithm. It works in O(n) time and O(1) space, making it the best approach for this problem.

[Adarsh Rai @Adarshrai002]

Today, I faced an issue while solving a LeetCode problem... 🤔

The problem was simple: Find the majority element—the number that appears more than n/2 times in an array.
At first, I thought of using a hashmap to count occurrences, but that takes extra space (O(n)).