Design (LLD) TrueCaller - Machine CodingSubhahu Jain·Apr 23, 2022·6 min readTable of contentsCode🔴 Key Problems & How to Fix Them1️⃣ Lack of Concurrent Access Handling (Thread Safety Issue)2️⃣ Slow Lookup for Caller ID (Inefficient Database Access)3️⃣ Inefficient Spam Detection (Blocking Needs ML & Real-Time Updates)4️⃣ No Rate Limiting (Preventing API Abuse)codingJavaScriptJavaGeneral ProgrammingProgramming Blogs
