pastaking

For logging into slack, they just email me a link, then I click on it to sign in. This is very convenient as I don’t have to remember another password. Why don’t more websites/apps do this? Is it due to some security issue I’m not aware of?

Hi HN, there is an option to get symmetric gigabit fiber internet (same download and upload speeds) at the new building I'm moving to. I'm debating whether I actually need that kind of speed (versus, say, 250 Mbps). What interesting things do you / would you do with really fast internet?

When I browse HN, I usually pick out a few articles I want to read from the front page, then email the links to myself to read later.

This method works out pretty well for me. I’m wondering if people have other strategies that work better?

Are there are online classes one can take to become a professional data engineer? That is, become good at data modelling, data cleaning, building pipelines, monitor data quality, etc?

This question is inspired by the Google Data Engineer certification exam: https://cloud.google.com/certification/guides/google-certified-professional-data-engineer.pdf

More detail on exam here: https://cloud.google.com/blog/big-data/2017/01/registration-now-open-for-google-data-engineer-certification-exam-in-beta

### The Task

Imagine we're making a webservice called "Primes". It has 1 endpoint, something like this:

    from flask import Flask
    import random  

    app = Flask('primes')
    
    @app.route("/rand_prime")
    def rand_prime(n):
        return random.sample(primes, 1)
    
    if __name__ == "__main__":
        global primes
        # some function to load primes from a file into a set
        primes = load_primes()
        app.run()

We want the fastest webservice to serve this endpoint that handles as much QPS as possible.

### Constraints

- We have to load all the primes __into memory__, there's no database at all. - We cannot use memcache, redis, etc. - We have to use Python.

### Current Solution

The code above just serves the primes via the default webserver that comes bundled with Flask. Some ideas to improve upon this:

- Use a better webserver (eg. Tornado) - Proxy several instances of this behind an Nginx server

Can we make this even faster? We really don't need complicated routing or security... Is it possible to do better by writing a custom webserver?

I'm a software engineer with no hardware experience. Who should I seek for help? Are there hardware design firms? How much would it cost and how long does it take?

Thanks!

I'd like to design physical products that can be mass produced. I know nothing about this field, except that it's called "industrial design".

For an absolute beginner, what is the quickest way to learn enough to be productive in industrial design? Any websites, articles, or resources are greatly appreciated.

Also, any insight into what the process is would be great too. Like what kind of tools are used, what are the industry standards, what kind of file format factories accept, etc.

Thank you!

Over 7000 babyboomers retire each day since 2011. This is a staggering number. There have been a lot of places on the web saying we're losing a huge amount of knowledge from these retirees.

I'm having trouble understanding the importance of this - what are some specific examples of the knowledge lost?

I'd like to build an app to count the number of customers in a store through a phone's camera. How would I go about doing this?

I mean how to create a card that acts as a debit card that I can distribute to other people? It's like those student cards university use for on campus food, shops, and internal services. Students would deposit money in, and spend money from the card at participating locations.