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* Posts by Destroy All Monsters

8140 posts • joined 3 Jun 2008

NoSQL's CAP theorem busters: We don't drop ACID

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Boffin

CAP theorem - not a blocker in the practical world

"CAP theorem clearly poses a theoretical problem for cloud computing, where services are being founded on massively distributed servers for their compute and storage."

In Overcoming CAP with consistent soft-state replication, we read:

"The CAP theorem has been highly influential within the cloud computing community, and is widely cited as a justification for building cloud services with weak consistency or assurance properties. CAP’s impact has been especially important in the first-tier settings on which we focus in this article. Many of today’s developers believe that CAP precludes consistency in first-tier services. For example, eBay has proposed BASE (Basically Available replicated Soft state with Eventual consistency), a development methodology in which services that run in a single datacenter on a reliable network are deliberately engineered to use potentially stale or incorrect data, rejecting synchronization in favor of faster response, but running the risk of inconsistencies. Researchers at Amazon.com have also adopted BASE. They point to the self-repair mechanisms in the Dynamo key-value store as an example of how eventual consistency behaves in practice. Inconsistencies that occur in eBay and Amazon cloud applications can often be masked so that users will not notice them. The same can be said for many of today’s most popular cloud computing uses: how much consistency is really needed by YouTube or to support Web searches? However, as applications with stronger assurance needs migrate to the cloud, even minor inconsistencies could endanger users. For example, there has been considerable interest in creating cloud computing solutions for medical records management or control of the electric power grid. Does CAP represent a barrier to building such applications, or can stronger properties be achieved in the cloud?

(main part of article followed by...)

Conclusion: The CAP theorem centers on concerns that the ACID database model and the standard durable form of PAXOS introduce unavoidable delays. We have suggested that these delays are actually associated with durability, which is not a meaningful goal in the cloud’s first tier, where applications are limited to soft state. Nonetheless, an in-memory form of durability is feasible. Leveraging this, we can offer a spectrum of consistency options, ranging from none to "amnesia freedom" to strong f-durability (an update will not be lost unless more than f failures occur). It is possible to offer ordered-based consistency (state machine replication), and yet achieve high levels of scalable performance and fault tolerance. Although the term amnesia freedom is new, our basic point is made in many comparisons of virtual synchrony with Paxos. A concern is that cloud developers, unaware that scalable consistency is feasible, might weaken consistency in applications that actually need strong guarantees. Obviously, not all applications need the strongest forms of consistency, and perhaps this is the real insight. Today’s cloud systems are inconsistent by design because this design point has been relatively easy to implement, scales easily, and works well for the applications that earn the most revenue in today’s cloud. The kinds of applications that need stronger assurance properties simply have not yet wielded enough market power to shift the balance. The good news, however, is that if cloud vendors ever tackle high-assurance cloud computing, CAP will not represent a fundamental barrier to progress."

Actually the whole issue of IEEE Computer is rather interesting.

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Toshiba boffins build nuke-proof 'bot

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Terminator

Re: So...

You just need an American Robot to tell the Japanese Robot to unfuck himself. Job done.

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Pint

Re: "smaller camera-mounted robot"

Japanese robots are known to split up and merge again in action-oriented settings.

http://www.urbandictionary.com/define.php?term=Gattai

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McAfee takes time off blogging to concentrate on being chased by police

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Re: "He claims he almost sold a dolphin to an Associated Press reporter..."

There is Ig-Nobel for results that cannot and should not be reproduced.

Dabbling in Bath Salts would probably make the cut.

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CERN rushes to install new anti-matter hunter

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Well, it's not "running" continuously.

It's like an office printer. Switch it on, switch it off.

Then dismantle it for repairs for a few month.

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'Rare for tech not to be involved in child abuse cases'

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Paris Hilton

Press "submit", bitch!

> Viewing of extreme or violent pornography and discussing it during sexual assaults.

How does that actually work? Do people have discussion about their pr0nz when they are performing rape?

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Apple: Sure, here's the HTC patent pact. WITH numbers blanked out

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Devil

It's also the manufacturer of various rather important parts of the shiny-shiny.

In game theory, you don't defect in a Prisoner's Dilemma.

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Want to run your own Apple shop? Start with £70k of German chairs

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Devil

Actually you don't - it's the reseller that suffers (which is why resellers may decline and/or go out of business).

Just today, I found this citation by Murray Rothbard, which may be apposite. It concerns taxation, but it's in the same league:

"The idea that the increased cost will be passed on to the consumer by the employer is an illustration of perhaps the single most widespread fallacy on taxation: that businessmen can simply shift their higher costs forward onto the consumers in the form of higher prices. All the economic theory expounded in this book shows the error of this doctrine. For the price of a given product is set by the demand schedules of the consumers (italics added). There is nothing in higher costs or higher taxes which, per se, increases these sched­ules; hence, any change in selling prices, whether higher or lower, will decrease the revenues of the business involved. For each business, on the market, tends to be, at all times, at its “maximum profit point” in relation to the consumers. Prices are already at their point of maximum return for the business; therefore, higher taxes or other costs imposed on the firm will reduce their net incomes rather than be smoothly and easily passed on to con­sumers. We thus arrive at this significant conclusion: no tax (not just an income tax) can ever be shifted forward."

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Re: stormfront largest in the uk?

No contracts or employment rights?

I didn't know Apple was running black sites and "reeducation camps"?

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Devil

So...

Any word on the design patents that are encumbering those chairs?

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BT: Olympics cyber attackers were amateurs

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Mushroom

"what do you expect, I’m only 12?"

In a William Gibson novel, that kind of Count Zero gets brainfried remotely, then their parents' house gets visited by a missile.

THAT's security.

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Autonomy to HP: bollocks

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Re: HP = twats but Twinkies will live on...

> They will sell off the brands.

They will sell off the brands. But they won't sell off the jobs.

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Destroy All Monsters
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Re: HP = twats

Well, HP brown sauce is in the same category as Twinkies. And Twinkies are dead now.

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Sacre Bleu! US fingered for Flame attack on Élysée Palace

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Big Brother

Re: There are some problems with your post.

> he's probably on a charm offensive

It's a "she", commonly known as "Big Sister". Yes that kind of "she".

And then, the "biggest ally" for which there is "no daylight" between it and the USA is - of course - That Country With The Bombable Ghettos, because it controls quite a lot of money during elections.

France? Not so much. Remember "Freedom Fries" and all the hostile crap back when they didn't immediately toe the Iraq invasion line? Of course, thing have changed somewhat as Sarko was a far more pliant fellow, but still.

Politicans. Lie lie lie. Fuck up. Lie some more.

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World's oldest digital computer successfully reboots

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Paris Hilton

But...but....

"where it was used to process mathematical calculations for Britain's nuclear program"

This smells like numerically solving differential equations.

So, how do you apply this thing to the task at hand? Do you program it somehow? Is there a dude with a large table for which he has to fill in a column and whereby he gets the values from the WITCH?

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German city dumping OpenOffice for Microsoft

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Re: Commercially clueless as well as technically clueless

It's just the cost of an upscale house. Taxpayer's gonna pay, right?

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Devil

Oh well

Office 2010, huh? If they are running an old OpenOffice, chances that they will upgrade to Ballmer Office 2013 before most of the current employees have moved into retirement are slim indeed.

Pray they never encounter the IFKAM!

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Apple, Spotify, Amazon: All your Cloud are belong to us, says firm

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Meh

A, civil servants and the tragedy of the commons.

Looks like USPTO again shat all over everything due to overall laziness and the need to collect some cash.

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Destroy All Monsters
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Windows

Re: "are belong" Never mind, I did not understand that reference* either........

Am I now so old that I must hear about Internet People who don't know about All Your Base?

The horror. The horror.

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Apple's profits fetish could spell its DOOM

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Re: I'll take this with a bag of salt

> Who cares?

Indeed.

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Greenhouse gases break record again, says top UN weather man

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Devil

Re: "additional carbon dioxide in our atmosphere will remain there for centuries"

We will all transform into Moties. Several centuries of evolutionary pressure to survive on a planet awash in interesting chemicals? Hell yeah!

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Re: and this is a surprise?

> first world manufacturers are undercut by child labour exploiting smog making developing country factories.

> we could have just paid 10 - 20% more and had clean air and a slower slide into globalisation.

Retarded shit.

Basically, the progressive fantasy of making everyone economically prosperous with no ill effects by cashing out more on the local till. As if the economy was some kind of supermarket with a "culturally sensitive / do-gooder" section that one needs to visit more and all will be well.

Start with Henry Hazlitt's "Economics in One Lesson", then work upwards from there, please.

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Destroy All Monsters
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Re: A modest proposal to solve the increased levels of greenhouse gasses

> Hitler was a green.

This is actually correct. He was very concerned about the Aryan Gene Pool and keeping a bucolic mythical back-to-roots-and-nature lifestyle.

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Swollen SUPER-GIGANTO PLANET sighted in Andromeda

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Boffin

Re: Astronomical Dope Slap

I will be waiting for the detailed computer simulation on a Cray XK7 and the subsequent papers. Graduate students, get to it!

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Destroy All Monsters
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Paris Hilton

On homo sapiens' declining eye acquity...

"The star is so huge, it can be seen with the naked eye in the constellation Andromeda, even though it's 170 light years away."

I dunno, I see lots of stars with the naked eye, and whole lot if I'm away from the city in the dark countryside.

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HP: AUTONOMY 'misrepresented' its value by $5 BILLION, calls in SEC

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Paris Hilton

Re: Some of HP's accusations.

So who thought they could get away with that kind of circus performance?

One would believe an employee of social security was massaging the books here...

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Oprah Winfrey too late to save Microsoft's Windows 8

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Headmaster

Re: Windows 8 launch hasn't gone as expected for the world's largest software maker.

Your mum probably has no expectations about the Higgs Boson either, but so what?

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Design guru: Windows 8 is 'a monster' and 'a tortured soul'

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Devil

Re: who does that idiot work for

Seriously EL Reg., I think you are tapping into the lower classes of the readership demographic.

Are you sure this is a healthy development?

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British Ruby conference cancelled after diversity row

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Devil

Cultural Enrichment Ruby?

So what about the speakers' religious beliefs and eating habits? Jedis and Vegans want to be there, too!

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Astronauts (or other 'nauts) could find life on Mars quite healthy

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Unhappy

> fields of solar panels

> and a sufficient source of energy up and running, and the plant operational and safe

I makes me cringe that the reflex reaction after 40 years of green whaling is to forget that there are NUCLEAR POWER PLANTS.

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Apple iCloud collapse forces fanbois to shower, meet face-to-face

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Gimp

#appleyouareuseless but I will be your gimp on the next product launch anyway

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Mozilla needs to find alternatives to the Google umbilical

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Re: Echoes of

Why the hell would you want to?

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'Long Time Ago' and 'Far, Far Away' records broken by new GALAXY

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Alien

Re: Call me Stupid?

Go away.

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Destroy All Monsters
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Devil

Re: ...13.3 billion years to reach Earth

It just assumes that the light emitted by [some object] has travelled for 13.3 billion years through expanding space and was appropriately redshifted. We thus see the given redshift of [some object]. I do think that the relationship between "distance travelled" and "multiplier of the original wavelength" is linear, so does not take into account slowdown (due to self-gravity) or speedup (due to dark energy) effects, but then again, I'm a cat.

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Taliban official's email blunder leaks 400+ contacts

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Mushroom

"Oh my good how did this get there I'm not good with computers"

Sucks trying to navigate through live using only sharia, arseholes!

Seriously though the fact that Afghan people actually *still* are somehwat partial to these bottomfeeders says a lot about how utter incompetence of the US at doing anything right.

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Galapagos islands bombed with 22 tonnes of Blue Death Cornflakes

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Terminator

A good job for the MIT robot lab, allied to Lockheed-Martin

Your mission: Develop RAT-101, an autonomous system that can patrol an island-largish area in adverse weather conditions, either terrestrially or aerially for at least a week before needing pick-up. It shall identify and terminate any biological entity of the genus "Rattus" - and only those - by means to be proposed (possible means may include, but are not limited to, projectile weapons or force applied through physical contact). Reusing existing or COTS software and hardware systems is strongly encouraged. Proposal for compact nuclear energy sources are accepted.

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Destroy All Monsters
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Re: Think of the smell!

And will anyone eat the dead mammals?

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Boss wrong to demote man over anti-gay-marriage Facebook post

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Devil

Re: Outrageous

Maximum thought control! IGOR!!!

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Destroy All Monsters
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Paris Hilton

Re: The conclusion being ....

But why is he a twerp? For responding to a Facebook post A WHOLE DAY LATER? For having opinions? Or for having "not progressive" opinions?

Inquiring minds etc...

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Musk to blast right of way through California with railgun Concorde

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Trollface

Hey Musk!

You didn't build that! Now wait in line, a taxation officer will be in touch shortly!

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China's cut-price drones attract Asian and African buyers

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Megaphone

Re: So...

The USA builds its drones itself!

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Destroy All Monsters
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Terminator

"Your clothes. Give them to me. Now!"

Not so fast. I'm sure we will stay at pure "plane-on-drone" action for the next uh ... 5 years or so.

A neural network made for detecting predators in the savannah, in the loop and riding two Ljulka-AL-31FM still is no match for remotely controlled semi-autonomous small-and-cheap robots.

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Destroy All Monsters
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Stop

Re: So why are BAE wasting it's time in Wales?

Fail for not distinguishing between "Britain" (privately owned UK-situated companies putting drones on the market) and "BAE" (well-connected lobbyist faffing around with taxpayer money, and not even UK-situated anymore)

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Destroy All Monsters
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Big Brother

Re: No Drones Here

Welcome to the world of superstate.

I guess one thing that the usual suspects won't hope that "Obama will now fix" is putting drones into private hands ("private" is become a dirty word fast).

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HP PC chief: Microsoft's Surface is 'KLUDGEY'. There, I said it

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Re: Vomit Removal Service...

You better stop coming here. At least people don't upload images yet.

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Anonymous attacks Israeli websites over Gaza bombings

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Holmes

Must watch more news

I hadn't even realized they had started another "Ghettoputzen". What's the pretext this time? Looks like someone needs to gather some righteous right votes for the upcoming election with the blood of others. Again.

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Belize PM: McAfee boss is 'bonkers', should 'man up and talk to cops'

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Pint

Re: High as a kite

> foaming at the mouth and rectum

I doubt he would be foaming at the rectum unless he actually put shampoo up the oxo. Here, you just want the molecule of interest to be absorbed in the blood stream.

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Destroy All Monsters
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I see Uzbekibelizstan!

Sounds like he's salted, all right.

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Forklift fondleslab 'fellas flee with vast haul of iPad Minis at JFK

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Trollface

"They were challenged by an airport worker returning from dinner"

"What are you guys doing? Overtime? I'm calling the union rep!"

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Lawyer sues Microsoft rather than slot an SD card into his Surface

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Alien

Re: What will happen...

Oh these Americans with their Zombie Neurosis.

Please lie down...

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