Design (LLD) a music recognition system using audio fingerprinting - Machine CodingSubhahu Jain·Jul 15, 2023·7 min readTable of contentsIssues in Above Design🔥 Problem 1: Singleton DatabaseManager = Global Throughput Killer❌ What we Did❌ Why This Is DangerousSolution🔥 Problem 2: Fingerprint Used as a HashMap Key (Design Bug)❌ What we Did❌ Why This Is a Big DealSolution🔥 Problem 3: Recognition Pipeline Is Synchronous (Latency Disaster)❌ What we Did❌ Why This Fails in ProductionSolution🔥 Problem 4: Observer Pattern Causes Hidden Memory Leaks❌ What we Did❌ What’s MissingSolution🔥 Problem 5: Decorator Pattern on Audio Processing Is Misleading❌ Claimed Design❌ RealitySolution🔥 Problem 6: No Concurrency Model for Matching Requests❌ Missing CompletelySolution🔥 Problem 7: Scale Is Claimed, Not Designed❌ Claimed Feature❌ Actual DesignSolutionPythonProgramming BlogsGeneral ProgrammingJavaScriptNode.js
