Posts
All the articles I've posted.
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LeetCode 36 Valid Sudoku
Solutions for LeetCode 36, medium, tags: array, hash table, matrix.
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System Design - How Circuit Breakers Work in Distributed Systems
How circuit breakers protect distributed systems from cascading failures: state machine design, failure detection, recovery probing, and a source code walkthrough of real implementations.
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LeetCode 25 Reverse Nodes in k-Group
Solutions for LeetCode 25, hard, tags: linked list, recursion.
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System Design - How Copy-on-Write (COW) Works
How Copy-on-Write works across operating systems, databases, and filesystems: the core mechanism behind fork(), Redis snapshots, LMDB reads, B-tree databases, and modern filesystems like Btrfs and ZFS.
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LeetCode 329 Longest Increasing Path in a Matrix
Solutions for LeetCode 329, hard, tags: array, dynamic programming, depth-first search, breadth-first search, graph, topological sort, memoization, matrix.
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LeetCode 2542 Maximum Subsequence Score
Solutions for LeetCode 2542, medium, tags: array, greedy, sorting, heap (priority queue).