ByteDance Backend Software Developer I interview questions

#1: One leetcode hard question followed by questions on network, os basics and some brain teasers. The interviewer was quite helpful in guiding me onto the right direction. #2: much like #1 #3: more focused on projects and experiences, got rejected after this round.

2 min self-introduction Java HashMap source code JVM and GC Network TCP time-wait / differences between TCP and UDP Database MySQL clustered index / how to prevent phantom read Algorithm find longest common substring (15min)