Md Kamrul Hasan

20/05/2025

_মাঝে মাঝে মন খারাপের কোন কারণ পাইনা, কারণ পাইনা একাকিত্বের, শুধু বুঝতে পারি আমি ভালো নেই!💔😅

09/04/2025

Struggling with API Questions in Interviews?

Here’s What You Need to Know -

Here’s a structured roadmap covering everything from basics to advanced concepts.

⎆ Types of APIs
- REST – Most widely used, follows stateless architecture
- SOAP – XML-based, used in enterprise applications
- GraphQL – Fetches only required data, flexible queries
- gRPC – High performance, uses protocol buffers
- WebSocket APIs – Real-time data transfer
- OpenAPI (Swagger) – Standard for API documentation

⎆ API Methods
- GET – Retrieve data
- POST – Create a new resource
- PUT – Update an existing resource
- DELETE – Remove a resource
- PATCH – Partially update a resource
- HEAD – Get headers without the response body
- OPTIONS – Check supported HTTP methods

⎆ Authentication and Security
- JWT (JSON Web Tokens) – Stateless authentication
- API Keys – Simple authentication method
- OAuth 2.0 – Secure authorization for third-party access
- OpenID Connect – Extends OAuth with identity verification
- HMAC (Hash-Based Message Authentication Code) – Secure message - authentication
- SSL/TLS Encryption – Secure data transmission
- Rate Limiting & Throttling – Prevent abuse and DoS attacks
- Input Validation – Protect against injection attacks
- CSRF Protection – Prevent cross-site request forgery
- Access Control (Roles & Permissions) – Restrict access based on user roles
- IP Whitelisting – Allow requests only from trusted sources

⎆ API Design Principles
- Statelessness – Each request is independent
- Versioning – Manage API changes efficiently
- Pagination – Load large datasets efficiently
- Caching – Reduce load and improve response time
- Idempotency – Ensure repeatable requests produce the same result
- Error Handling – Provide clear and meaningful error responses

⎆ API Testing
- Unit Testing – Test individual components
- Integration Testing – Verify API interactions
- Security Testing – Identify vulnerabilities
- Performance Testing – Measure API speed and load handling
- Load Testing – Test API under heavy traffic

⎆ API Documentation
- OpenAPI (Swagger) – Standardized API documentation
- API Blueprint – Human-readable API design format
- Postman Collections – Organize and test API requests

⎆ API Versioning
- URI Versioning – /v1/users vs. /v2/users
- Header Versioning – Use custom headers for versions
- Query Parameter Versioning – Example: ?version=1
- Content Negotiation – Different versions based on request headers

⎆ Tools and Frameworks
- Postman – API testing and automation
- Swagger (OpenAPI) – API documentation and design
- Insomnia – Lightweight API testing tool
- Apigee – API management platform
- AWS API Gateway – Manage and deploy APIs
- Express.js – Build RESTful APIs with Node.js
- RAML – Define RESTful APIs with a structured approach

Happy learning !

07/04/2025

ফি লি স্তি'নে'র ভিসা free করে দেওয়া হোক and we are ready for জি হা দ!✊

ফিলিস্তিনে ইসরাইলি বর্বর আগ্রাসন ও নারকীয় হ*ত্যা'য'জ্ঞের প্রতিবাদে রাজধানীতে শিক্ষার্থীদের প্রতিবাদ সমাবেশ ‘মার্চ ফর প্যালেস্টাইন’ অনুষ্ঠিত হচ্ছে আশেপাশে কেউ থাকলে জয়েন করতে পারেন

Details Here: http://admin.localhost:8000/facebook-posts/24/show

06/04/2025

ইনশাআল্লাহ একদিন এভাবেই ফিলিস্তিনি
পতাকা উড়বে।❤️🇯🇴🇯🇴

23/03/2025

Fixing or breaking?

Cleaning up code sounds easy just delete the extra parts, right? But sometimes, what looks useless is actually holding things together.

Good developers don’t just remove things. They ask: Why is this here? What could go wrong?

Before deleting, make sure you're improving, not causing new problems.

📷 ᴹᵉᵐᵉ ᶜʳᵉᵈⁱᵗ ᵗᵒ ᵒʳⁱᵍⁱⁿᵃˡ ᶜʳᵉᵃᵗᵒʳ
♻️ 📌 🔔

23/03/2025

The Rise of Full Stack Developers in 2025

In today's fast-paced tech industry, Full Stack Developers are in high demand.

Companies are looking for professionals who can handle both frontend and backend development, manage databases, and work with DevOps technologies.

What is a Full Stack Developer?

A Full Stack Developer is proficient in:

⚡ Frontend: HTML, CSS, JavaScript, React, Vue, Angular

⚡ Backend: Python, Node.js, Java, Ruby on Rails

⚡ Databases: MySQL, PostgreSQL, MongoDB, Cassandra

⚡ DevOps: AWS, Docker, Jenkins, Kubernetes

⚡ Mobile App Development: React Native, Kotlin, Swift

Market Demand and Growth

In 2025, Full Stack Development is one of the fastest-growing IT careers.

The global demand for Full Stack Developers has grown by 35% compared to the previous year.

More than 60% of companies prefer hiring Full Stack Developers over specialized frontend or backend developers.

The average salary of a Full Stack Developer has increased by 30% in the last five years.

With businesses rapidly moving towards digital solutions, learning Full Stack Development can be a game-changer. If you are looking for a career that offers versatility, high demand, and great earning potential, Full Stack Development is the way forward.

Are you ready to become a Full Stack Developer?

10/09/2023

08/09/2023

06/09/2023

অসাধারণ এই ছবিটি এঁকেছেন ভিকারুননিসা নূন স্কুল অ্যান্ড কলেজের সাবেক শিক্ষার্থী জাহরা তাসফিয়া রেজা....

06/09/2023

ভুল ধরতে পারলে আপনি লিজেন্ড🙂

আপনারা সবাই লিজেন্ড 🙂✌️