Express.js implementation in golang (ongoing)

Features:

1. Custom router implementation.
2. Route Groups.
3. Local and global middleware support.
4. Query and path parameter parsing.

Key Takeways:

1. Whenever we make a HTTP request, browser also requests for favicon.ico.
2. For custom router implementation, we also have to reimplement all the functions in the http.Handler interface.
3. You can add multiple (key,value) pairs to request context, without affecting it's original structure.
4. You can use variadic parameters (e.g. func (x ...int)) for providing any no. of parameters to go functions
5. You cannot have struct(or pointer to struct) as map key.

Issues(for now):

1. Does not check for duplicate route entries across multiple route groups
2. Does not check for duplicate middleware entries from local and global middlewares