JavaScript
1. Closures
2. Asynchronous programming
3. Frontend application architecture - ReactJS and state management solutions

Web application architecture optimization
1. Pagination
2. Browser storages
3. Stateless and Stateful architecture
4. JWTs

System Design
1. Spotify system design
2. web sockets
3. microservices

Question

JavaScript 
1. Closures
2. Asynchronous programming
3. Frontend application architecture - ReactJS and state management solutions

Web application architecture optimization
1. Pagination
2. Browser storages 
3. Stateless and Stateful architecture 
4. JWTs

System Design
1. Spotify system design
2. web sockets
3. microservices

Ancilar