[jamra]

Honestly, add another machine and the problem is solved. youll be able to afford a team of programmers to rewrite your app in any language of your choosing by the time you feel the slow down.

I'm using .NET core for a production app now. Team of 16. It's working beautifully. The data access is the bottleneck in 99% of what I have ever worked on, not the web framework. That is why Rails is so popular.

[unoti]

> Honestly, add another machine and the problem is solved. youll be able to afford a team of programmers to rewrite your app in any language of your choosing by the time you feel the slow down.

I understand your point, but your statement isn't true in all circumstances. It depends on your business model. Performance begins to matter more when the economics demand it. Say you're working on a game that has a free tier, or a service that offers some things for free and some things paid. Every customer hour costs you a certain amount, and you can expect a certain amount of revenue per customer hour on average. With this kind of a balance, a 20x performance difference can mean a fundamental shift in what kinds of business models can be profitable.

So for something like enterprise software, yeah, add another server. But for something like an MMO or 4Chan performance can be make or break. It's all about cost per user hour vs. revenue per user hour.

[jamra]

The benchmark linked appears to be a 4x speedup that can potentially be attributed to the view engines used. It's really ridiculous to argue for 20x speedups without evidence of the deficit being in the web framework.

So lets take your hypothetical game example... What are your requests doing exactly? Are they returning cached content? If so, the caching policy is more important. If you're running a game, game state is probably changing constantly so you will need to connect to a database. Are you indexing things correctly, sharding, etc? Are you aware that Eve online runs python code?

You can point to any hypothetical scenario where you get a million users on a free tier, but then you will either have to get some funding or start charging for your services. In the case of the chat app Discord, they wrote their server architecture in Elixir, which runs on the Erlang VM called BEAM, which destroys .NET core at scale. Does that mean my team should stop using .NET core? No. I have to consider the knowledge base of the people I currently have as well as familiarity with deployment. The cost of the servers are a lot less important in the real world for 99% of applications any of us will write. I would even argue that it would be better to get to market faster with a product that scales poorly and to scale it as needed. Facebook was and still is written in PHP.

[unoti]

There's very little persistent storage involved with what MMO's and many other kinds of game servers do. Unlike web apps and many business apps, they are definitely not data bound.

I am aware that much of Eve Onlike is written in Python. But they are very premium: $15/mo. Would they be able to support their infrastructure for say $3 from 1 out of every 10 users once every 3 months?

I'm also aware that Facebook was originally written in PHP. Their business model is different, but they are also world leaders in PHP performance and compiling. There's a reason they invested so much in the performance.