LeetCode was HARD until I Learned these 15 Patterns:. 1. Prefix Sum.2. Two Pointers.3. Sliding Window.4. Fast & Slow Pointers.5. LinkedList In-place Reversal.6. Monotonic Stack.7. Top ‘K’ Elements.8. Overlapping Intervals.9. Modified Binary Search.10. Binary Tree Traversal.11.

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Top 20 Git Commands You Should Know:. 1. 𝐠𝐢𝐭 𝐢𝐧𝐢𝐭: Initializes a new Git repository.- Example: git init my-new-project. 2. 𝐠𝐢𝐭 𝐜𝐨𝐧𝐟𝐢𝐠: Set git configuration values like username/email.- Example: git config --global user .name "user123". 3. 𝐠𝐢𝐭 𝐜𝐥𝐨𝐧𝐞:

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Top 20 System Design Concepts You Should Know:. 1. 𝐂𝐥𝐢𝐞𝐧𝐭-𝐒𝐞𝐫𝐯𝐞𝐫 𝐌𝐨𝐝𝐞𝐥: Core architecture where clients request data and servers respond. 2. 𝐃𝐍𝐒 (𝐃𝐨𝐦𝐚𝐢𝐧 𝐍𝐚𝐦𝐞 𝐒𝐲𝐬𝐭𝐞𝐦): Translates human-readable domain names into IP addresses. 3.

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10 Must-Know Graph Algorithms for Coding Interviews:. 1. Depth First Search (DFS).2. Breadth First Search (BFS).3. Topological Sort.4. Union Find.5. Cycle Detection.6. Connected Components.7. Bipartite Graphs.8. Flood Fill.9. Minimum Spanning Tree.10. Shortest Path. ♻️ Repost to

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Dynamic Programming was HARD until I Learned these 20 Problems and Patterns:. 1. Fibonacci Sequence.2. Kadane's Algorithm.3. 0/1 Knapsack.4. Unbounded Knapsack.5. Longest Common Subsequence (LCS).6. Longest Increasing Subsequence (LIS).7. Palindromic Subsequence.8. Edit Distance.

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LeetCode was HARD until I Learned these 15 Patterns:. 1. Prefix Sum.2. Two Pointers.3. Sliding Window.4. Fast & Slow Pointers.5. LinkedList In-place Reversal.6. Monotonic Stack.7. Top ‘K’ Elements.8. Overlapping Intervals.9. Modified Binary Search.10. Binary Tree Traversal.11.

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Batch vs Stream Processing - What's the difference?. 🔹 𝐁𝐚𝐭𝐜𝐡 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠.- Processes data in large chunks (batches) at scheduled intervals. - Ideal for historical data processing, data warehousing, and analytics. - Examples: Payroll processing, periodic reporting,

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Top 10 Database Scaling Techniques You Should Know:. 1. 𝐈𝐧𝐝𝐞𝐱𝐢𝐧𝐠: Create indexes on frequently queried columns to speed up data retrieval. 2. 𝐕𝐞𝐫𝐭𝐢𝐜𝐚𝐥 𝐒𝐜𝐚𝐥𝐢𝐧𝐠: Upgrade your database server by adding more CPU, RAM, or storage to handle increased load. 3.

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API Gateway Explained:. As your application grows, the number of APIs increases too. Without the right tools and infrastructure, managing these APIs can quickly become a challenge. This is where API Gateway comes into play. It sits between clients (e.g., browsers, mobile apps)

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Top 6 Load Balancing Algorithms You Should Know:. 1. 𝐑𝐨𝐮𝐧𝐝 𝐑𝐨𝐛𝐢𝐧.- Distributes requests sequentially to servers in a list. - Simple, predictable, and works well when servers are roughly equal in capacity. → Best for: Uniform workloads, evenly matched servers. 2.

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S.O.L.I.D principles explained with examples:. 𝐒: 𝐒𝐢𝐧𝐠𝐥𝐞 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 𝐏𝐫𝐢𝐧𝐜𝐢𝐩𝐥𝐞 (𝐒𝐑𝐏).- A class should have one and only one reason to change. ❌ Bad: A UserManager class that handles authentication, user profiles, and email notifications. ✅