Hi there,
Answer: Can't declare "res" twice(constant)
I have 4+ years of experience in Backend Development & 2+ years of experience as Full Stack Developer. The technologies I've worked on are given below:
1: MEAN Stack(Angular 1.x)
2: MERN Stack
3: PHP (CodeIgniter, Symfony)
Databases: Mysql, MongoDB
In-Memory DB: REDIS, Memcache
I also have experience as Backend Architect and recently designed a system which enables the OTT platform(just like Netflix) to handle more than 3 million Concurrency, in short, I have experience in large-scale applications as well.
Do let me know if you have any question, I'll be happy to answer.
Regards,
Harsh