Visiontech Brand$

Designer || Crypto & NFT || Web3 || Brand Strategist || Dev & Forecaster || Cybersecurity |GA748PJZ

[Visiontech Brand$ @VisiontechBrand]

To the world 🚀🚀🚀🚀🌏 #ATH #LION #GEM #MEMECOIN #KINGOFMEME

[Cryptowave Lab @MhagamaFau31375]

🚨Chart Patterns Cheat Sheet👀👇

[Juanlu_CabanillasGar @JuanluCaba_Unex]

🚨 Type I Error vs Type II Error
A Type I Error means rejecting a true null hypothesis (False Positive), while a Type II Error means failing to reject a false null hypothesis (False Negative). Understanding these errors is essential for making accurate statistical decisions.

[Mybookmojo @mybookmojo]

FVG VS Inverse Fair Value Gap(iFVG)

[Visiontech Brand$ @VisiontechBrand]

@md_raza3737 send me a copy, please.

[Darcy @ItsDarcy_AI]

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

[Pratham @Prathkum]

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.

[The Myth @myth_coder]

SECRETS TO MASTERING TIME MANAGEMENT...

[Sarah @SarahAIHub]

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

[Market Rebellion @RebellioMarket]

RULES FOR TRADING &TRAINING:

[Visiontech Brand$ @VisiontechBrand]

@kevin_parker_ai All

[Kevin Parker @kevin_parker_ai]

All Paid Courses (Free for First 4500 People)

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[Anjula Dwivedi @HeyAnjula]

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)

[Nagarjuna Creates @nagarjuncreates]

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:

[Harrison Chase @hwchase17]

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?

https://t.co/OXNPMeGiyd

[Fazt @FaztTech]

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
https://t.co/SdIL4Yv2xS

🐙 GitHub CLI → PRs sin tocar la web
https://t.co/W1PjICM2fC

☁️ cloudflared → tu localhost público con un prompt
https://t.co/hj5YCxr8DJ

🚀 CLI de tu Nube → todas las nubes actuales tienen su propio CLI para que tu agentes despliegue
- Railway: https://t.co/J0QhDfPwSM
- Vercel: https://t.co/LmU45UDtEc
- AWS CLI: https://t.co/4MRg9AI8TZ
- Azure: https://t.co/9Q3ad0Lwlw
- Google Cloud: https://t.co/1EFvMgfgfs

📚 Context7 → docs actualizadas para tu LLM
https://t.co/EV0IT1zroX

[Dhanian 🗯️ @e_opore]

🐧 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: https://t.co/DeHjJ1Wubf

#Linux #LinuxTutorial #CyberSecurity #iptables #UFW #firewalld #DevOps #SystemAdministration #CloudComputing #100DaysOfCode

[freeCodeCamp.org @freeCodeCamp]

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.

https://t.co/JcUBcNhbU6

[Param @ParamSiddh]

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