Tip 1 : Practice as much problem as possible from Graph
Tip 2 : Try to understand how web works, what are the communication protocol and when should we choose one over other.
Tip 3 : Core subjects are must.
Tip 1 : Add projects (Full-stack will preferred more)
Tip 2 : Add some works experience and describe what you did there.
What data structure we use for indexing? Can we use hashmap? What problem will occur if we use hashmap for indexing billion row table?
Tip 1 : We can use hashmap
Tip 2 : But when you will use hashmap for indexing billion row table then you might run into internall memory fragmentation issue as hashmap is contiguous.