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3amOpsGuy

535 karma · joined June 2, 2012

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3amOpsGuy··on Hat, not CAP: Introducing Highly Available Transactions
To be fair to the article, It's pretty upfront about the constraints. From the article:

'Of course, there are several guarantees that HATs cannot provide. Not even the best of marketing teams can produce a real database that “beats CAP”; HATs cannot make guarantees on data recency during partitions, although, in the absence of partitions, data may not be very stale. HATs cannot be “100% ACID compliant” as they cannot guarantee serializability'

My concern is the pitched low latency use case, if I understand correctly there's no way to avoid an extra round trip?

Could be very useful all the same.

3amOpsGuy··on Ouya Android console up for pre-order on Amazon
"Every game on OUYA is free to try. We believe you shouldn't have to buy it unless you love it"

That's pretty cool. Count me in.

3amOpsGuy··on Mini Drones: Army Deploys Tiny Helicopters
Hopefully!

Although i reckon even the common kit that's been available to consumers for the past few years could be tricky to jam without concerted effort:

http://www.futaba-rc.com/technology/fasst.html

I.e. to jam this frequency hopping requires than you either a) figure out what channels to jam at what time or b) saturate the full bandwidth.

If you can do either of those, you'd probably be better jamming the voice comms than RC helis. Not sure though.

3amOpsGuy··on Mini Drones: Army Deploys Tiny Helicopters
Begs the question though, what exactly are they doing during R&D?

About 2 years ago i was building comparable devices for around £285 GBP each. Today i can do the same (thanks to cheaper lighter parts and experience on my part) for slightly over £110, that could be reduced for bulk builds.

My R&D costs were 2 weeks worth of my evenings reading and planning.

You can buy a commercially developed equivalent with better flight stability than the model they've produced (their design is inherently more unstable - and thus agile, and possibly slightly quieter) for under £60 delivered, video reception equipment is a separate purchase at £30.

3amOpsGuy··on Iran unveils new indigenous stealth fighter “Qaher 313″
All fur coat and nae knickers as they say.

Shame because I reckon we're overdue some positive news about Iran instead of all the propaganda we've been getting drip fed in the west over the past couple of years.

3amOpsGuy··on A crazier prediction: iPhone Plus is real, and huge
All American companies litigate might be closer to the truth but i sure hope it isn't.
3amOpsGuy··on Sublime Text 3 Beta
I don't think anyone's disputing the quality of the products, Idea's ItelliJ, Microsoft's Visual Studio, ST2 - they're all quality software.

I just wanted to pick a bone with something you said though:

>> Some times there are benefits to having a small closed source, private paid team of professionals writing software

This is a comment about development methodology - the Cathedral and the Bazaar. Take out the words "closed source" (e.g. think Chromium browser) which have no baring on your statement, and then i agree.

3amOpsGuy··on Elon Musk: Boeing 787 battery fundamentally unsafe
May be worth exploring the differences between "safer" cells such as LiFe / A123 vs the riskier Li-ion & LiPo types.

I understand the charging strategy for A123 is much simpler to implement than for Li-Ion (may not even need a micro controller) but i'm not 100% confident in that statement!

3amOpsGuy··on Elon Musk: Boeing 787 battery fundamentally unsafe
I'm just surprised there isn't more damage from the fire! I use similar chemistry batteries (although much smaller) in RC planes (they are very energy dense for their weight).

When they are damaged (normally through charging incorrectly but in some cases through puncture / crash damage) they burn extremely rapidly and very violently for their size.

The damage in the photographs of the 787 is not on the scale i was expecting.

3amOpsGuy··on Sublime Text 3 Beta
>> Really? I don't see IntelliJ Idea suffering much from NOT being Open Source

Yeah definitely. Idea & Visual Studio (among others) are top quality products, and yet both nothing more than a chapter 11 filing away from being vague memories.

Contrast adoption of Idea vs Eclipse.

Consider when Windows is no longer relevant, VS will necessarily degenerate to being a niche product (even though it is arguably one of the finest IDEs available at any price today).

3amOpsGuy··on Sublime Text 3 Beta
I still can't see how on purely financial terms, open sourcing ST becomes a better outcome than keeping it closed source.

The open source avenue (awesome as it would be) is effectively stopping any future income for releases.

That means finding an alternative business model for the developer to sustain himself. Sounds like a lot of risk and hassle, if i were the developer, why should i expose myself to that?

The flip side is, for long term adoption, it pretty much has to open source itself.

3amOpsGuy··on Why Everyone Eventually Hates or Leaves Maven
I enjoyed the article but I feel it overlooks one of the biggest reasons to use something like maven:

It gives us the language to efficiently reason about and discuss build concepts with colleagues.

This is a big thing, think about the most recent new starter situation you experienced, about how communication of these common build tasks was expressed. Chances are if it was with a more composable tool, the discussions were fairly detailed, the words 'just like' frequently appeared. If it was with a more rigid tool, the conversation would have been in terms that tool commonly defines.

3amOpsGuy··on The Golden Rule of Programming
I'm not a C# coder but I understood it was possible to have non-nullable types?

Keep meaning to try C# for a project sometime. I understand it to be a more expressive, programmer friendly Java.

3amOpsGuy··on Cassandra Performance
If you don't understand the implications of eventual consistency, you're heading for a fall.

It's not a trivial topic and unfortunately "it appears to work as you'd expect" on a small dev cluster which can lead to statements like yours.

Your parent's post is actually very very accurate.

3amOpsGuy··on Naked-Image Scanners to Be Removed From U.S. Airports
As a non-american, i'm curious (& supportive). When are you going to get together and drop your TSA?

Could you band together this year and get rid of it?

3amOpsGuy··on [dead]
It's an indirect advancement. It's beneficial by expanding the circle of people engaged in the issue.

To some extent, it doesn't really matter what Linus proclaimed but he's helped here by tipping others over the edge of contributing to the discussion.

By that i mean, how many people who have great respect for Linus, previously sat quiet on the issue, absorbing the information, but now feel engaged enough to voice an opinion? I'd wager quite a few.

Good on him for not sitting quiet. A big public spotlight's exactly what's needed on this issue. Linus just helped cast the beam a little wider.

3amOpsGuy··on U.S. Attorney Carmen Ortiz Issues Statement on Aaron Swartz Case
>> From the very press release

Which occurred after the unfortunate events and as such constitutes nothing more than back-pedalling at full speed.

When Aaron was suffering through this, what information did he have to make his decisions on?

What her office said, did, failed to say or failed to do before the events is what matters.

3amOpsGuy··on U.S. Attorney Carmen Ortiz Issues Statement on Aaron Swartz Case
That's a strange line of argument.

It's obvious that the communication to Aaron was "up to 35 years", he wasn't told "up to 7 years" or "up to 3 years", the communication he received was "up to 35 years in prison".

To argue that the prosecutors didn't intend to push to maximum penalty would be to do so without any basis in fact - it would be mere speculation and of 0 value compared to the recorded facts as they stand.

3amOpsGuy··on Devops/Sysadmin Cheatsheet
I upvoted you the other day and it seems coming back today i have the upvote option again? Weird.

Either way, have an upvote!

3amOpsGuy··on Devops/Sysadmin Cheatsheet
There's a few typos in this, in case it helps:

    ps auxww -> ps auxww -H (H is hierarchy)
Faster than lsof, and only displays files - although most things in unix are files! lsof -p -> ls -l /proc/$PID/fd

Run something forever watch command

Overview of all disks du should be df.

Find files over 100mb find . -size +100M

Low hanging fruit for size ls -al | sort -nk5

Files created (modified) within the past 7 days: find . -mtime -7

Find files older than 14 days: find .gz -mtime +14 -type f This will break when you have more archived files in the directory than the shell's glob char can support. Use: find . -mtime +14 -type f -name '*.gz' and it will run quicker too.

TCP Sockets in use, "netstat -antp" will be faster and also lists the process id.

EDIT: formatting

3amOpsGuy··on Amazon to Provide CD Buyers With Cloud-Based MP3s For Free
I know where you're coming from and i don't cast any aspersions on the activity - some ebook implementations just suck and you're infinitely better with the pirate version even if you've already paid for the "real" version.

Wanted to mention O'Reilly though - for $5 and a note of the ISBN number off the back of your book you get the ebook in whatever format you desire, can re-download it as many times as you want in whatever formats, and it'll automatically sync to dropbox.

I've been stocking up on them - it does work really well. I get to carry about all my books (well, not quite), with notes and highlights and i only need to keep physical copies of the books i refer to most often. It's been a bit of a revelation for me.

3amOpsGuy··on Ford Releases An SDK For Their Cars
>> 5 POINTS IF YOU CHANGE TO THE FAR RIGHT LANE!

This had me in stitches, I can't help feel something of this nature is a plausible outcome.

3amOpsGuy··on Avis acquires car sharing company Zipcar for $500 million
The Daewoo Kalos wasn't Korean, it was an American (GM) parts-bin-special.

Daewoo went to the wall, with a few projects in the drawing board, what would become the Aveo was one of them. GM bought them out, then set to work homogenising the assembly of the Aveo with wider GM techniques and parts.

There is undoubtedly some Korean influence remaining I'm sure, but it's predominantly a GM car - they were quite vocal about all the improvements they introduced.

3amOpsGuy··on How multi-disk failures happen
ZFS is great, possibly the closest to perfection available at any price today.

But theres a word beginning with "O" and ending with "racle", they are so focused on the short term buck they are massacring their potential revenues with their short sighted approach of keeping Solaris out of everyone's hands.

3amOpsGuy··on Open-Source Speech Recognition: Simon 0.4.0 Released
It's trickier than just matching word sounds, the sphinx docs are first rate: http://cmusphinx.sourceforge.net/wiki/tutorialam

It is very interesting but unfortunately just appears to be too much hassle for sane people to tackle (although it'd be extremely worthwhile if someone would innovate in this space and lower the barrier to entry - most are using commercial acoustic models with the FOSS software)

3amOpsGuy··on Open-Source Speech Recognition: Simon 0.4.0 Released
Yeah there is http://www.voxforge.org/home

I have CMU Sphinx (pocket edition even though I'm running on a full blown server) and for my use case it works fairly well.

3amOpsGuy··on Bye Bye Ubuntu, a sad Christmas
Straw man.
3amOpsGuy··on Bye Bye Ubuntu, a sad Christmas
>> I don't understand your aggression.

It's easy, someone shares with you a product of their hard work, for free, and if you then choose not to use it that's entirely fine. If however you choose to snipe at hard work, you deservedly attract criticism in the strongest terms.

A much more constructive response which would attract high praise could be any of:

A) learn how to and then fix it yourself, share this improvement freely with others B) sponsor someone to fix it for you C) engage in directed discussion with those currently in a position to assist but unaware of the issue - open a bug ticket

3amOpsGuy··on Bye Bye Ubuntu, a sad Christmas
This story stinks, what an obnoxious sense of entitlement.

How dare they break YOUR webcam, and why should you invest untold hours in learning how to contribute and then fixing it.

World on a plate with no effort to give back? Meh.

3amOpsGuy··on Windows 8 Sales Disappoint in Shaky PC Market
>> failure for the ... and admin

Coupled with server 2012, it's actually a huge leap forward for the admin.

But I agree that for power users (who are one of the rarer user types in your typical office environment and notoriously hard to accomodate) it is not an improvement at this time.

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