Hacker News story: Ask HN: How should I build a simple marketplace website today?

Ask HN: How should I build a simple marketplace website today?
I think I'm over-engineering so I could use a second opinion. Let's assume that nothing off the shelf met your needs, so you had to build the website from scratch, what programming language, frameworks, databases, hosting platform, etc would you use to build your application. Requirements: * 500 daily active users * 1,000 product listings * Very low maintenance Features * Browse items for sale * Search, filter products * In app messaging (Buyers can message sellers, sellers can respond) * CRUD interface for sellers listing products * User authentication It feels stupid asking the question, but it seems like none of the "modern" web frameworks fit such a simple use case. 0 comments on Hacker News.
I think I'm over-engineering so I could use a second opinion. Let's assume that nothing off the shelf met your needs, so you had to build the website from scratch, what programming language, frameworks, databases, hosting platform, etc would you use to build your application. Requirements: * 500 daily active users * 1,000 product listings * Very low maintenance Features * Browse items for sale * Search, filter products * In app messaging (Buyers can message sellers, sellers can respond) * CRUD interface for sellers listing products * User authentication It feels stupid asking the question, but it seems like none of the "modern" web frameworks fit such a simple use case.