Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL • Hacker News Board

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#31

Post by gfodor » Mon, Feb 16, 2015, 4:29 PM UTC

AFAICT, Facebook engineered their client side code around Flux in order to eliminate two-way data binding in their user interface code, which leads to all sorts of issues. I don't imagine they push the pattern into the server. Their relay stuff still relies upon a smart data tier which understands a query language called GraphQL.

I definitely don't think they considered implementing a dumb dispatcher and store layer on the database server using stored procedures. (This seems terrifying to me, I don't see the upside.)

It's an interesting experiment but I think this might be an example of being too aggressive in trying to generally apply a design pattern that was motivated by a specific problem.

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#32

Post by polskibus » Mon, Feb 16, 2015, 5:03 PM UTC

As far as I understand, this design is based on similar goals as the Meteor/MongoDB project - instead of reading oplog, you listen for notifications.

I wonder how would Meteor be better than this proposal given that both are node based.

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#33

Post by razzi » Mon, Feb 16, 2015, 5:18 PM UTC

Anybody know how to efficiently make smexy graphs like that? Did Adobe have a hand in their creation?

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#34

Post by itsbits » Mon, Feb 16, 2015, 5:31 PM UTC

jacques_chester wrote: post #17

GameRanger has six million users, tens of thousands to hundreds of thousands of whom will be active simultaneously. His chat problem involved has moderate fan-out. Scott Kevill does it on a single machine (last time I checked) with hand-rolled C++ and close attention to the details of how the Linux networking stack works.

Single Machine??...really...would love to know more about the stack..

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#35

Post by jacques_chester » Mon, Feb 16, 2015, 6:02 PM UTC

pratikch wrote: post #29

jacques_chester wrote: post #17

GameRanger has six million users, tens of thousands to hundreds of thousands of whom will be active simultaneously. His chat problem involved has moderate fan-out. Scott Kevill does it on a single machine (last time I checked) with hand-rolled C++ and close attention to the details of how the Linux networking stack works.

I am also interested to know, Do you've any links on this?

Scott gets very little press -- mostly when he picks up support for games after the publisher or matchmaking service abandons one.

I used to live in Perth and we'd sometimes hang out and mock the front page of HN.

http://www.gameranger.com/about/

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#36

Post by aantix » Mon, Feb 16, 2015, 6:42 PM UTC

remon wrote: post #27

I suppose there is some value to this as a thought experiment but pretty much every tier in that architecture has breaking flaws. The most relevant being that anything that has an audience of 1 million users cannot run on an architecture that has single points of failure.

Physically the hardware can't handle it or are you just advocating that it shouldn't?

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#37

Post by alxndr » Mon, Feb 16, 2015, 6:51 PM UTC

OT: as someone trying to learn my way around Erlang's OTP framework, I'd be interested in a walkthrough of an OTP based system compared to this.

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#38

Post by chucksmart » Mon, Feb 16, 2015, 6:52 PM UTC

remon wrote: post #27

I suppose there is some value to this as a thought experiment but pretty much every tier in that architecture has breaking flaws. The most relevant being that anything that has an audience of 1 million users cannot run on an architecture that has single points of failure.

TLDR;'thought experiment', feh, if this was actual tested result would be much more interesting.

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#39

Post by _almosnow » Mon, Feb 16, 2015, 8:37 PM UTC

chucksmart wrote: post #38

remon wrote: post #27

I suppose there is some value to this as a thought experiment but pretty much every tier in that architecture has breaking flaws. The most relevant being that anything that has an audience of 1 million users cannot run on an architecture that has single points of failure.

TLDR;'thought experiment', feh, if this was actual tested result would be much more interesting.

But if the author didn't "thought experiment" about that, how else would he bait you into clicking...

Re: Million User Webchat with Full Stack Flux, React, Redis and PostgreSQL

#40

Post by [deleted] » Mon, Feb 16, 2015, 9:28 PM UTC

megaman821 wrote: post #30

The Flux terminology is confusing to me. It looks like the Observer pattern to me. * Stores contain Observables * Components (or Views) contain Observers * Actions are Proxies So the article is basically saying the Observer pattern is scalable, but uses the buzz-phrase "Full Stack Flux" instead. To make it even worse it is only a theoretical application of this pattern.

[deleted]