lost-theory

Lumosity - http://www.lumosity.com/ - San Francisco, CA

We are looking for software engineers on the rails team and operations team (the team I'm on)!

Lumosity provides brain training games to improve the minds and lives of our 50 million users worldwide. Lumosity.com is one of the largest consumer rails apps and has a team of really smart engineers and product people building it.

If you're interested, please read the job descriptions and apply through jobvite here:

Senior Software Engineer (Rails): http://hire.jobvite.com/j/?cj=oW7PVfwx&s=SWE_HN

Senior Ops Engineer (DevOps): http://hire.jobvite.com/j/?cj=oX7PVfwy&s=DevOps_HN

Rails Performance Engineer: http://hire.jobvite.com/j/?cj=oUPGYfw7&s=PerfEng_HN

We also have a bunch of other job positions at http://www.lumosity.com/jobs for engineers (iOS, Android, Flash) and others (UX, marketing, internationalization, product management). If you have any questions at all please email slieberman@lumoslabs.com and put "Hacker News" in the subject!

Even easier way to get short descriptions of commands:

    whatis lsof
    apropos lsof

Lumosity - http://www.lumosity.com/ - San Francisco, CA

We are looking for software engineers on the rails team and operations team (the team I'm on)!

Lumosity provides brain training games to improve the minds and lives of our 50 million users worldwide. Lumosity.com is one of the largest consumer rails apps and has a team of really smart engineers and product people building it.

If you're interested, please read the job descriptions and apply through jobvite here:

Senior Software Engineer (Rails): http://hire.jobvite.com/j/?cj=oW7PVfwx&s=SWE_HN

Senior Ops Engineer (DevOps): http://hire.jobvite.com/j/?cj=oX7PVfwy&s=DevOps_HN

We also have a bunch of other job positions at http://www.lumosity.com/jobs for engineers (iOS, Android, Flash) and others (UX, marketing, internationalization, product management). If you have any questions at all please email slieberman@lumoslabs.com and put "Hacker News" in the subject!

Very fun and unique. I enjoyed it a lot! My solution (spoiler alert): https://gist.github.com/lost-theory/8412918

Ohg vfa'g vg yvxr gung va erny yvsr? V xvaqn rawblrq vg orvat gung jnl. Vg znqr zr qb n yvggyr rkgen yrtjbex gb znxr fher V qvqa'g neerfg na vaabprag zna.

Lumosity - http://www.lumosity.com/ - San Francisco, CA

We are looking for software engineers on the rails team and operations team (the team I'm on)!

Lumosity provides brain training games to improve the minds and lives of our 50 million users worldwide. Lumosity.com is one of the largest consumer rails apps and has a team of really smart engineers and product people building it.

If you're interested, please read the job descriptions and apply through jobvite here:

Senior Software Engineer (Rails): http://hire.jobvite.com/j/?cj=oW7PVfwx&s=SWE_HN

Senior Ops Engineer (DevOps): http://hire.jobvite.com/j/?cj=oX7PVfwy&s=DevOps_HN

We also have a bunch of other job positions at http://www.lumosity.com/jobs for engineers (iOS, Android, Flash) and others (UX, marketing, internationalization, product management). If you have any questions at all please email slieberman@lumoslabs.com and put "Hacker News" in the subject!

The rise of the -dens:

http://names.yafla.com/#n=Aiden,Jaden,Braden,Jayden,Kayden&s...

Hi Igor. Unfortunately no, we aren't able to do H1B or remote for this position.

Well tell her thanks!

Lumosity - http://www.lumosity.com/ - San Francisco, CA

The operations team @ Lumosity (the team I work on) is hiring 1-2 ops engineers! Our ops team currently is 3 people and we are responsible for the smooth operation of lumosity.com for our 50 million users. We use chef, nginx, HAProxy, MySQL (Percona Server), Redis, Memcached, nagios. We run on dedicated hardware at SoftLayer. Lumosity.com is one of the largest consumer rails apps and has a team of really smart engineers and product people building it.

Some things you will be working on: scaling & capacity planning; finding & removing performance bottlenecks; reducing single points of failure; implementing (semi-)automated failover for MySQL/redis/memcached; building a CI system for our chef code, investigating new technologies like Docker to help us spin up infrastructure in less time; being part of our on-call rotation.

We're looking for folks with experienced in both sysadmin & development, but it's totally fine if you know one side and want to learn more about the other :)

Here is the official job description (scroll down):

http://www.lumosity.com/jobs/?nl=1&jvi=oX7PVfwy,Job&jvk=JobL...

If you're interested please contact me at steven@lumoslabs.com or apply through that jobvite page and mention HN.

We also have a bunch of other job positions at lumosity.com/jobs for engineers (iOS, Android, Rails, Flash) and others (UX, marketing, internationalization, product management).

I'm sure you can find some of the developers here: http://www.gittip.com/.

Great addition, I can finally replace my probabilistic key dumper (lua procedure that grabbed 1k RANDOMKEYs at a time and ran forever).

Until you have 27 hostnames.

The RFC seems to back me up:

    You might as well just call them "1", "2", and "3".  The only time this kind of
    naming scheme is appropriate is when you have a lot of machines and there are
    no reasons for any human to distinguish between them.  For example, a master
    computer might be controlling an array of one hundred computers.  In this case,
    it makes sense to refer to them with the array indices.

When you're starting off with your cute naming scheme, how do you know how many machines you'll manage in the end? Most places I've worked at have hundreds of servers. Using a simple, easy to follow, don't-make-me-think standard from the beginning is the only thing that makes sense IMO.

To give a server a meaningful name, use DNS.

edit: Also, to take your complaint about "i-977.. what was the rest of it?" and turn it around - imagine this scenario: provision 20 new app servers named foo40..foo59 OR provision 20 new app servers and think of 20 cool names to match our existing cool naming scheme of leonardo donatello michaelangelo raphael master-splinter shredder blah blah blah :)

Cute server naming schemes are one of my pet peeves. In my experience the only two logical choices are: sequential numbers (e.g. foo1, ..., foo100, ... if your company name is Foo Corp.), or hashes / uuids (like amazon instance IDs, e.g. i-977a24e3). If you want to give a server a memorable or cute name, use DNS or some kind of alias.

It loads 20 or so ogg audio files like this: http://mynoise.net/Data/OSMOSIS/7a.ogg

Then I'm guessing the EQ controls the volume. So no it doesn't generate / stream anything to you server-side.

Your method is sane, the problem is with RVM and rbenv, which everyone uses and depend on hacky implicit shell BS (rbenv less so, but it's still there). Build from source and use the full path to the interpreter is the only sane method IMO.

Read-only demo: https://gingkoapp.com/hyperloop

Yes, I just tried it. The first screen on the downloaded installer says it will download & install Virtualbox, and run Virtualbox + Arc upon system startup.

I see a parallel to aspect oriented programming / advice. The "filters" are equivalent to aspects and "registering" them is equivalent to advising a method. The neat thing about an AOP system is that aspects are cross-cutting and can be applied to any method. It seems like this approach requires special setup (the Pipeline object).

Comprehensions can only be used to replace map & filter, not reduce.

There's an easter egg video if you hover over the 4-color bar in the bottom right of the page. Direct link:

http://www.youtube.com/embed/Ap2yUubnw4c?rel=0&fs=1&showinfo...

I am not familiar with IPcluster. But I have used pyro and execnet. I think I will continue to use execnet, since it seems more lightweight than IPcluster. But the web interface provided by ipython notebook is really attractive..

I think it's the going rate. A wildcard cert from edgecast is similarly priced (plus a setup fee).

I've never had my linode machines taken offline, but I've received many "Instance scheduled for retirement" messages from AWS.

They are both powerful scripting languages, but I think the ruby community suffers from a monoculture around rails & web development. Python also has a strong emphasis on web development (django, flask, pyramid), but there are also large communities of people doing scientific / numeric computing (scipy, numpy), bioinformatics (biopython), games (pygame, pyglet), networking (twisted), education (MIT's 6.00 course), embedded stuff / robotics, etc.

Schema changes are not dead easy when you have hundreds of millions of rows and/or hundreds of GBs of data.

The ads:

http://www.youtube.com/watch?feature=player_embedded&v=3...

http://www.youtube.com/watch?feature=player_embedded&v=Y...