Visiontech Brand$ @VisiontechBrand

@md_raza3737 send me a copy, please.

20 Backend Engineering concepts every developer should know :- 1. REST APIs — build standardized web services 2. GraphQL — flexible API query language 3. Authentication — verify user identity securely 4. Authorization — control access to resources 5. JWT — stateless authentication using tokens 6. CRUD Operations — create, read, update, and delete data 7. SQL Databases — structured relational data storage 8. NoSQL Databases — flexible document and key-value storage 9. Database Indexing — speed up query performance 10. Caching — reduce latency with Redis or Memcached 11. Message Queues — asynchronous communication between services 12. Microservices — build applications as independent services 13. API Rate Limiting — prevent abuse and overload 14. Load Balancing — distribute traffic across servers 15. WebSockets — enable real-time bidirectional communication 16. Logging — record application events for debugging 17. Monitoring — track application health and performance 18. Docker — containerize backend applications 19. CI/CD — automate testing and deployment pipelines 20. Reverse Proxy — route and secure incoming traffic with tools like Nginx or HAProxy

Everyone is chasing self-improving models. The bigger opportunity is self-improving products. Your users generate the best learning signal every single day. I think that's where the real competitive advantage will come from.

Atai Barkai @ataiiam

a month ago

x.com/i/article/2069…

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SECRETS TO MASTERING TIME MANAGEMENT...

Master The Art of Learning How to Remember and Retain Knowledge.

RULES FOR TRADING &TRAINING:

@kevin_parker_ai All

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MASTER SYSTEM DESIGN SYSTEM DESIGN MASTER TREE │ ├── 1. Fundamentals │ ├── What is System Design │ ├── Functional Requirements │ ├── Non-Functional Requirements │ │ ├── Scalability │ │ ├── Reliability │ │ ├── Availability │ │ ├── Consistency │ │ └── Performance │ └── Trade-offs │ ├── 2. Architecture Basics │ ├── Monolithic Architecture │ ├── Microservices Architecture │ ├── Service-Oriented Architecture (SOA) │ ├── Layered Architecture │ └── Event-Driven Architecture │ ├── 3. Networking Basics │ ├── HTTP / HTTPS │ ├── TCP / IP │ ├── DNS │ ├── Load Balancing Concepts │ └── Latency vs Throughput │ ├── 4. Load Balancing │ ├── Types (L4 / L7) │ ├── Algorithms │ │ ├── Round Robin │ │ ├── Least Connections │ │ └── IP Hash │ ├── Reverse Proxy │ └── Failover Strategies │ ├── 5. Databases │ ├── SQL vs NoSQL │ ├── Relational Databases │ ├── NoSQL Types │ │ ├── Key-Value │ │ ├── Document │ │ ├── Column │ │ └── Graph │ ├── CAP Theorem │ └── ACID vs BASE │ ├── 6. Caching │ ├── Why Caching │ ├── Cache Layers │ │ ├── Client-side │ │ ├── CDN │ │ ├── Server-side │ ├── Cache Strategies │ │ ├── Write-through │ │ ├── Write-back │ │ └── Cache-aside │ └── Cache Invalidation │ ├── 7. Data Partitioning │ ├── Vertical Partitioning │ ├── Horizontal Partitioning (Sharding) │ ├── Consistent Hashing │ └── Rebalancing │ ├── 8. Replication │ ├── Master-Slave │ ├── Master-Master │ ├── Synchronous Replication │ └── Asynchronous Replication │ ├── 9. Consistency Models │ ├── Strong Consistency │ ├── Eventual Consistency │ ├── Causal Consistency │ └── Read-after-Write Consistency │ ├── 10. Messaging Systems │ ├── Message Queues │ ├── Pub/Sub Systems │ ├── Kafka / RabbitMQ │ ├── Event Streaming │ └── Exactly-once / At-least-once Delivery │ ├── 11. API Design │ ├── REST │ ├── GraphQL │ ├── gRPC │ ├── Rate Limiting │ └── API Gateway │ ├── 12. Storage Systems │ ├── File Storage │ ├── Object Storage (S3) │ ├── Block Storage │ └── CDN (Content Delivery Network) │ ├── 13. Security │ ├── Authentication │ ├── Authorization │ ├── Encryption (SSL/TLS) │ ├── Firewalls │ └── DDoS Protection │ ├── 14. Scalability │ ├── Vertical Scaling │ ├── Horizontal Scaling │ ├── Auto Scaling │ └── Stateless Services │ ├── 15. Fault Tolerance │ ├── Redundancy │ ├── Circuit Breaker │ ├── Retries & Backoff │ └── Graceful Degradation │ ├── 16. Observability │ ├── Logging │ ├── Monitoring │ ├── Metrics │ ├── Alerting │ └── Distributed Tracing │ ├── 17. Deployment & DevOps │ ├── CI/CD │ ├── Docker │ ├── Kubernetes │ ├── Blue-Green Deployment │ └── Canary Releases │ └── 18. Real-World System Design ├── URL Shortener (like Bitly) ├── Chat System (like WhatsApp) ├── Video Streaming (like YouTube) ├── Ride Sharing (like Uber) └── Social Media Feed (like Twitter/X)

Most people use NotebookLM like a file reader. Big mistake. It can summarize, compare, quiz, teach, research, create content, and turn messy notes into clear action plans. Here are 20 powerful NotebookLM prompts to learn faster, research smarter, and save hours:

One of the better agentic AI courses I've seen Nearly 10 hours of great content. Covers LangChain, LangGraph, RAG, deepagents, guardrails, and more Any other good Lang* resources out there for folks who are interested in learning? youtube.com/watch?v=rV3HJ4…

No importa si usas Claude Code, Codex u OpenCode. Estos 6 CLIs son los que SIEMPRE termino instalando: 🎭 Playwright CLI → la IA prueba el navegador sola github.com/microsoft/play… 🐙 GitHub CLI → PRs sin tocar la web github.com/cli/cli ☁️ cloudflared → tu localhost público con un prompt developers.cloudflare.com/tunnel/ 🚀 CLI de tu Nube → todas las nubes actuales tienen su propio CLI para que tu agentes despliegue - Railway: docs.railway.com/guides/cli - Vercel: vercel.com/docs/cli - AWS CLI: docs.aws.amazon.com/cli/ - Azure: learn.microsoft.com/cli/azure/ - Google Cloud: cloud.google.com/sdk/gcloud 📚 Context7 → docs actualizadas para tu LLM context7.com

🐧 Day 16/30 — #Linux A Linux server connected to the internet without a firewall is like a house with its doors wide open. Firewalls help control incoming and outgoing traffic, protecting systems from unauthorized access and malicious activity. Linux Firewall – Mastering iptables, ufw, and firewalld Understanding Linux firewalls is essential for system administrators, DevOps engineers, cybersecurity professionals, and cloud engineers. What is a Firewall? A firewall filters network traffic based on predefined rules. It can: → Allow trusted connections → Block unwanted traffic → Restrict access to services → Improve server security → Protect against attacks iptables – The Traditional Linux Firewall iptables is a powerful command-line firewall utility built into the Linux kernel. Example: → sudo iptables -L Displays current firewall rules. → sudo iptables -A INPUT -p tcp --dport 22 -j ACCEPT Allows incoming SSH connections on port 22. Benefits: → Extremely flexible → Highly customizable → Widely used on Linux servers However, complex rule management can become difficult as configurations grow. ufw – Uncomplicated Firewall ufw provides a simpler interface for managing firewall rules. Common on Ubuntu-based systems. Examples: → sudo ufw enable Enables the firewall. → sudo ufw allow 22/tcp Allows SSH traffic. → sudo ufw allow 80/tcp Allows HTTP traffic. → sudo ufw status Displays active firewall rules. Benefits: → Beginner-friendly → Easy rule management → Faster configuration than iptables firewalld – Dynamic Firewall Management firewalld is commonly used on Red Hat, CentOS, Rocky Linux, and Fedora systems. It introduces the concept of zones for managing trust levels. Examples: → sudo firewall-cmd --state Checks firewall status. → sudo firewall-cmd --add-service=http --permanent Allows HTTP traffic permanently. → sudo firewall-cmd --reload Applies configuration changes. Benefits: → Dynamic rule updates → Zone-based management → Enterprise-focused administration Common Ports to Know: → 22 = SSH → 80 = HTTP → 443 = HTTPS → 3306 = MySQL → 5432 = PostgreSQL Why Firewall Skills Matter: → Secure Linux servers → Protect cloud infrastructure → Control network access → Reduce attack surfaces → Meet security best practices Mastering iptables, ufw, and firewalld is a critical step toward building secure and production-ready Linux systems. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/l/hqtbxt #Linux #LinuxTutorial #CyberSecurity #iptables #UFW #firewalld #DevOps #SystemAdministration #CloudComputing #100DaysOfCode

Dhanian 🗯️ @e_opore

a month ago

🐧 Day 15/30 — #Linux Networking is what allows Linux systems to communicate with other devices, servers, and the internet. Whether you're managing cloud infrastructure, troubleshooting connectivity issues, or hosting applications, networking skills are essential. Linux

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Getting a web dev job today is more competitive than ever. You need more than just a portfolio to land a job. Here, Ilyas goes over strategy, skills prep, applications, interviews, and more so you make smarter decisions while looking for your next role. freecodecamp.org/news/the-ultim…

Best YouTube Channels To Learn AI in 2026 (No BS). Save it. 1. Fundamentals – 3Blue1Brown 2. Deep Learning – Andrej Karpathy 3. AI Research – Yannic Kilcher 4. Practical AI – AssemblyAI 5. LLMs – AI Explained 6. ML Theory – StatQuest 7. Papers Simplified – Two Minute Papers 8. GenAI – Matthew Berman 9. AI Agents – Nicholas Renotte 10. Applied ML – Krish Naik 11. PyTorch – Aladdin Persson 12. Math for ML – Serrano Academy 13. Industry Insights – Lex Fridman 14. Real-world AI – DeepLearningAI

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@_avichawla well structured 🥰

AI Agent Project Structure - Example

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