🧠 Must-Know Concepts for Every Developer 🧰💡

❯ Data Structures & Algorithms
⦁ Arrays, Linked Lists, Stacks, Queues
⦁ Trees, Graphs, Hashmaps
⦁ Sorting & Searching algorithms
⦁ Time & Space Complexity (Big O)

❯ Operating Systems Basics
⦁ Processes vs Threads
⦁ Memory Management
⦁ File Systems
⦁ OS concepts like Deadlock, Scheduling

❯ Networking Essentials
⦁ HTTP / HTTPS
⦁ DNS, IP, TCP/IP
⦁ RESTful APIs
⦁ WebSockets for real-time apps

❯ Security Fundamentals
⦁ Encryption (SSL/TLS)
⦁ Authentication vs Authorization
⦁ OWASP Top 10
⦁ Secure coding practices

❯ System Design
⦁ Scalability & Load Balancing
⦁ Caching (Redis, CDN)
⦁ Database Sharding & Replication
⦁ Message Queues (RabbitMQ, Kafka)

❯ Version Control
⦁ Git basics: clone, commit, push, pull
⦁ Branching strategies
⦁ Merge conflicts & resolutions

❯ Debugging & Logging
⦁ Print debugging & breakpoints
⦁ Logging libraries (log4j, logging)
⦁ Error tracking tools (Sentry, Rollbar)

❯ Code Quality & Maintenance
⦁ Clean code principles
⦁ Design patterns (Singleton, Observer, etc.)
⦁ Code reviews & refactoring
⦁ Writing unit tests

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