skysight-inc/HackerNews huggingface dataset:
Well you cant call it caching. By definition, that means data is written to both drives at the same time.

Writing data to both the cache and the main store is not a fundamental property of caches. Consider, for example, the caches on the microprocessor of an x86 chip. The only time both the cache and main memory will contain the same data is if the trait is set to 'WT', which is very rare.

It's true that (coherent) caches behave in such a way that you can't tell that the data isn't duplicated at each level, but that's achieved by writing back the data when, for example, an external device requests some particular cached data.

If the cache is persistent, and external devices can access the cache as easily as the main store, there's no particular reason to write data back, other than evictions [1], i.e., you should expect the cache to basically be "a software which moves files around"

[1] This isn't strictly true -- depending on the access patterns and the characteristics of the cache and the bus, you might want to opportunistically write data back to avoid having to write back on an eviction. Disclaimer: I've only worked on microprocessor caches and not disk caches, so I'm not intimately familiar with performance traces for disk caches. However, based on simple back-of-the envelope reasoning, it seems to make sense to make disk caches the type of cache you consider not to be a cache at all.
While you don't provide consulting services surely this would fall under "troubleshooting WordPress", no? This is taken straight from your website[1]:

The Most WordPress Experts Per 1000 Customers…

Great support? Many hosting companies claim this. But when you’re hosting WordPress, you need specific support. If a plugin breaks, or a theme file doesn’t work, and you’re hosted with a typical hosting company, they’ll throw up their hands and say “Not responsible! We just provide the server and the bandwidth, buddy.”

Not so at WP Engine. Our staff consists entirely of WordPress experts, so we can help you track down and troubleshoot WordPress issues.

[1] http://wpengine.com/wordpress-experts/
I think everyone who announces that their hardware is "fully open-source" should answer the "Stallman test".

That is, answer the question "Would Stallman use this?".
Facebook, I want my friends back
Over 60 Barnes & Noble locations victims of PIN pad tampering
I've been waiting for this! I'd love to volunteer in order to get trails around my town on the map. Even better would be to accept user-submitted street-view data, and open the backpack design. Maybe a backpack rental program even?
I think you mean centenarians. Centurions were Roman foot soldiers.
Further confirmation that search is completely broken in the App Store. Read about this app on my work computer, fire up the App Store on my phone, search 'Letterpress', Apple's Cards app, and a Letterpress Handbook about actual letterpresses.
I am not a registered non-profit. I am a developer with a day job who'd like to host my side-projects on an inexpensive VPS using Passenger Enterprise.

As things stand, Ruby hackers can either host their pet projects on Heroku or come up with a DIY solution to manage virtual hosts and graceful restarts on a VPS.

In my opinion, the convenience of mass deployment and rolling restarts is worth $99 for projects that do not make money, but it becomes a questionable annual expense at $249. From the upvotes on my initial comment, I think that others in my position may feel the same. And it seems like a good way to encourage people who build things for fun to look to Passenger Enterprise for their bigger, paid projects too.
They could set up the itinerary for him to purchase quickly.
At one time DKIM and SPF were good indicators that an email was spam because spammers adopted it so that their mail looked more legit.

I never look at DKIM or SPF. If I really care about who a message comes from I use PGP. It's a handy input for learning spam filters that use it as one piece of information, but it has about a 10% failure rate (legit mail where the signature fails to verify because of message manipulation in transit). It's most useful if the domain it's matching against is also trusted in some way. For example, a good signature against google.com is likely to mean the mail is good; a good signature against frohfuwehfwo.biz is not very helpful unless we know that that domain always sends spam.

Also, the most important piece of mail I ever received (from the Prime Minister's office) came without SPF or DKIM and I authenticated it by calling the office. In general, external authentication like that tends to reassure me.
No problem! Thanks for circling back and letting us know it arrived.
"The (strong) implication being that any WordPress configuration will perform better on WPEngine than on an alternative hosting platform."

No, there's no inference or implication that any (ie regardless of how its built) WordPress configuration will scale on WP Engine. As I wrote in my prior comment, scalability is a partnership between infrastructure and code. That's the case irregardless of framework and PaaS provider.

We like car analogies at WP Engine - if I sell you a racing car and you're only a moderately good driver then you're going to crash when you approach the corner at 200mph. There's little I can do about that other than teach you to drive, and I'm in the business of building the cars. There are plenty of folks who can help you improve your race-craft out there.

To say that we've missled someone is an unfair assertion.

If I analyze the suggestions you're making in your comment here...

* Jacques complained about lack of 24/7 support, but I shouldn't have tried to reply and explain the reason for that because 'there's no crying in business'. ?????

* The WP Engine website shouldn't mention scaling WordPress because it's not technically possible to scale all WordPress code regardless of how it's written. (What should our site say? What should any scale-orientated PaaS website say given the same issues apply to anyone in this space)

* WP Engine should vet and screen it's customers so that they must prove their code can scale before we sell them an account? ?????

I'm sorry, but if that's the advice you're offering then, with respect, I don't agree.
Stale DNS, most likely.
I'm not convinced a public forum is the best place for customer support - witness Ben's very reasonable statement above which is still accruing negative responses, in spite of going well beyond the call of duty in refunding money paid to a completely different service. It's quite hard to interact with a crowd baying for blood - emotions run high, and people tend to pick sides and pick holes in any argument. One response to that is to ignore the crowd and try to deal with the particular customers - that's what I take the tweets to mean.

It's fair to criticise those tweets and I don't feel they are appropriate really, but I don't think they should be classified as disgusting - misguided and inappropriate at this particular time, perhaps, but not disgusting. Isn't it better to deal with situations like this without escalating emotions further and degenerating into both sides insulting each other?
Well, on food - Tesco and Sainsburys will deliver from their websites, and ocado.com for waitrose has been mentioned.

Pro - food comes to you and you only get what you want (not random hungry puchases).
Con - you have to be in when they arrive, unsure what the windows are.

Laundry - I was living in NE London at the time (about 3 years ago) so I used http://www.theironingboard.com/
There must be more of these around in other parts of town.

Pro - somebody washes, dries, folds and (optionally) irons your clothes.
Con - ????
(OK so it costs money instead of time, what you think is good value in this department is probably very subjective, and you have to be there to accept delivery, but they did deliver in the evenings :)

Cleaners are an odd one because you're allowing someone access to your property, often when you're not there. It may be best to find a trustworthy cleaner by word of mouth.
>whether aquaponics can create higher quality food than organic produce

Why single out the organic market?
The JVM ate my variable!
The big thing I notice about this list is what's not on it: Google and Facebook. Imagine if you could pay $5/month to Google for search services and not have to worry about the long-term consequences of the ad-supported business model.
Games can be won. Zynga mostly makes toys.
We really need a robust version of Matchmaking that games like Halo have so that you're never without an opponent and a good connection.
In fairness to you, and I said this, the 24/7 thing is on me. I just assumed you had it. I should've checked.

Edit: and Wordpress is a monster. But that's why I wanted to pay you guys in the first place.
A Ponzi scheme inolves paying returns to investors out of the investment capital of subsequent investors. That's the definition.

The executives and VCs of Zynga built up a product and took their returns from the public by selling the public shares, which is a right to the future profits of the company[1]. Only, it turns out that those with the best knowledge of the inner working of the company probably knew there were no profits to be had, nor any on the horizon. This is made evident by the inside selling and relatively fast decline of the the company's share price.

So, while I don't go around claiming Zynga (or any such bust up) is akin to Madoff, I don't think the difference is as large as you think. It's all about intent, and we'll never really know. The rest of the pieces are there.

By the way, I'm long Zynga January 2014 calls. They may have been the recipient of loose SV money, and as such got lazy, but there is demand for this product if they can get it together. There's a real business here, so I guess I'm in the non-Ponzi crowd.

[1]If you aren't investing with the intent on earning the future profits of the company, but instead are looking to sell at a higher price, you are speculating, not investing. I don't feel sorry for speculators, it's the nature of that zero sum game.
It seems to me like having a screen protector should be the best case. Isn't this the sort of thing they are for? Peal it off and stick a new one on; much easier than scrubbing down your screen.
My sweet mother, subscribe and save? Hacker News pays for all the productivity it costs, one hundred times over.
Goal-oriented design
This article definitely seems like an overkill. If you are using bcrypt or scrypt properly, what else is needed other than common sense of course.
Yeah, it feels significantly less useful in the Canadian market without support for Interac. You couldn't run a business with just this, here (unless you want to get yelled at by, and lose a lot of sales to, the 90% of your customers who are going to want to pay by debit and not credit).
It sounds more like tiered storage than cache to me, or perhaps it's both. But why let that get in the way of a sensational headline.
OK. This I can't be reasonable about.

The completely different service refund wouldn't be necessary if the not different service had been up to expectation in the first instance.

I feel absolutely justified in being refunded that amount by WPEngine.
We're really excited about this! Lots of Voxeo Labs employees have HN accounts, so feel free to ask us questions.

For technical details, visit http://voxeolabs.com/ameche/technology/
Thanks for this, I hadn't seen it before and it is very informative!
I've seen it in the same company. At a previous employer I trippled the hourly rate and was amazed at how the same customers treated me completely differently.

These customers seemed to be valuing my time by how much they paid for it.
RubyMine: RubyMotion is on Board
It's always possible of course, but from the article:

As he recalls, nine other doctors confirmed the diagnosis.

So if true, chances of a misdiagnosis are pretty slim.
It's like a chain smoker telling you that smoking is bad.
Je woning winterklaar maken doet besparen
Same here. Can't find the game at all on my iPhone.
There's a nice interview with Loren about development and design of the game here: http://www.youtube.com/watch?v=2VbqBBiEWu8
It isn't like F1 at all... F1 is a multi-datacenter, transactional datastore and SQL, that google uses to replace mysql.

This aint nothing like that.
You could do a lot with hackable HD firmware. For example recover data from bricked disks or find bugs or make sure that disk you're about to RMA is infact fully wiped, etc etc. That would be especially useful now that SSD's have "turn into brick" failure modes and frequent firmware bugs that trigger them. Other ideas: adding crypto or RAID-friendly knobs, making the filesystem and the on-SSD flash
fs aware of each other and parametrize accordingly, etc etc.
In fact sounds like Apple's latest Fusion Drive is a thing that requires disk firmware and filesystem to cooperate.

The Alphamosaic processor (branded VideoCore in its Broadcom incarnation) has also been marketed as a network and security accelerator in its previous life... It might well be useful for all kinds of stuff.
Explorar o reino do urso polar em Churchill - Canadá
Show HN should be where you show your cool personal projects and stuff like that, not a place where you advertise your company/product.
14-year-old girl builds a car
Contactos Gay
I wouldn't say their opinions are being ignored by Canonical. I don't have any insight into their processes, but I do know that things don't become popular by not listening to your target audience. And Ubuntu is popular.

Rather I think they're taking the complaints exactly as they should be: people outside of the target audience trying to convince them that they don't have a target audience. They do. It's just different from the target audience of Debian or Arch. We can draw a straight parallel to Windows 8. The target audience is demanding easier UI and a tablet-like experience. Those outside of the target audience are complaining that this audience does not exist.

In both cases (Unity and Metro), the developers put in an option for those that don't like the change. Canonical keeps an up-to-date repository of alternative desktop environments, and Microsoft left the desktop in Windows 8.
This story and comments have been flogged to death a bit already, but I do have a couple questions/concerns here.

While perhaps the issue ended up mostly being due to a Wordpress core issue, I question why this was an issue for a service that someone is expected to pay $250/month for?

The OP was able to, without a team of engineers/admins get the same content running on a VPS with no issue. I then question exactly what one gets when they pay $250/month for this service? To expect to get any sort of scaling capability out of a $8-$30/month shared hosting account is asinine and anyone running more than a small amount of traffic under such circumstances deserves what they get.

Why then if the end service was not capable of sustaining traffic/memory to the same degree that some shared providers are willing to go, would one pay $250/month? I think this is a question the creators of WP Engine genuinely need to answer...
Germany itself has some pretty lenient wage policies if you hire long-time unemployed people. But I doubt that there's a big demand for it. Germans don't like to delegate in general, even if it's with a pretty trivial matter. When Walmart first arrived, they tried to have your groceries bagged for you, just like they do in the US. Quickly dropped that, as people complained about employees touching their stuff or doing it the wrong way. Never mind that for a lot of people the ghosts of the Stasi (or even Gestapo) are still lingering, so e.g. sending people you don't know your bills and other personal data is a bit taboo.
Not out of the ordinary. It fits with what we experienced with WPE as well. My take: if more people aren't complaining, it's because they're not monitoring their sites well.

Had to move our highest traffic site back to GoDaddy (which makes me cringe, don't get me wrong). Doing the same with our other two sites.

That said, I believe in what you guys are doing, think there's space in the market for someone like WPEngine ... it's just that, in my experience, you guys are executing poorly and dropping the ball quite often.
> Short of paying a personal chef

Ding, I smell a business idea:

OurChef: You want good dinners, and you want a life. We want to sell you good dinners. OurChef is your personal caterer, with authentic quality ingredients.
You didn't get my point, probably because of my terrible english :) The browser has no way of knowing in advance if a script doesn't depend on any of the previous ones, so it cannot optimize this specific case and parse/execute the script before the other ones have been executed. You can manually tell the browser to load the scripts and execute them as soon as they're ready, in no particular order, via the async attribute. If you don't, the browser is going to assume that the order is important and load them one by one.
Yes, 128GB for $250. But excellent 128GB SSDs can be had at retail for as little as ~$90 on sale. What does that 128GB drive - purchased in huge quantities directly from the manufacturer - cost Apple?

Your Seagate hybrid isn't the only system of it's kind, it's not the comparison I had in mind.
Google Brings Street View Into the Backcountry
> You guys say right on your home page that you're "infinitely scalable."

There's a big difference between being infinitely scalable, and being infinitely foolproof. If your PaaS exposes enough power to the user, they'll find a way to shoot themselves in the foot occasionally.
I'm staying at a Hyatt right now for my job. My cell phone has faster internet than the hotel does.
Gays de españa
Anandtech's Galaxy Note 2 Review
Their English isn't much better.

"Square Register is the free app that allows anyone to safe and secure credit card payments with[...]"

That said, it isn't a big deal to me. Square is really cool and I hope it will be available in Australia at some point, though I won't be holding my breath.
But a HDD with a flash cache is still a hdd component and a flash component. Putting them in the same enclosure and using one of them as a cache for the other doesn't magically merge their combined MTBFs into a lower number.
> whom I helped manage out of the organization

I haven't heard this expression before, but it sounds like he had the guy fired. He didn't like the guy, or felt that the guy wasn't functioning well in his position at Sun.
Sure, I may have actually done better on the Putnam than he has. I've gotten top 100 and top 200 before... but that really wasn't the point I was trying to make. I was just making the correction because the original claim is, at least to me, much more impressive than what is actually stated on his resume.
I usually start at the 3rd or 4th paragraph to cut through the BS. If it sounds interesting, then I'll go back and read the beginning.
Convert Excel Workbook to PDF Format in .NET Applications
This video tutorial explains how to convert Excel workbook to PDF format using Aspose.Cells API. In this video tutorial, we shall create a windows application. Firstly user needs to Load an Excel workbook and save the Excel workbook in PDF format. Aspose.Cells is a .NET component for spreadsheet reporting without using Microsoft Excel. It supports robust formula calculation engine, pivot tables, VBA, workbook encryption, named ranges, spreadsheet formatting, drawing objects like images, OLE objects and importing or creating charts.
Had the same problem. I just went to www.atebits.com from my device and clicked on the itunes link from the site.
> You wouldn't buy stock in a company at $10 if you expected it to be worth $10 for the entire time you held the shares.

Yes, you very much would, if you had reason to expect that company to be willing and able to regularly pay out dividends - model for returns that does not depend on growth and is thus sustainable (nothing grows forever).
Instruction set is licensed, fails instantly!
I feel like this is much more about the results of high school popularity (confidence, self-assuredness, dare I say getting laid?) than the actual implementation of popularity itself
Dropbox is software, and like any software, it has bugs. One of those bugs could easily result in "delete this file and then propagate the deletion to every client". Granted, Dropbox has some rudimentary versioning, so it's pretty likely that you'd be able to recover, but still, I wouldn't advise anyone to use Dropbox sync exclusively as a backup solution.
Or even BitBucket.
Because, I play chess
Federal Budget Limits Affect Scientific Conferences
While compromized passwords are one problem, leaking your data is bad in so many other ways as well. Yet almost all focus lies in obfuscating passwords to prevent extraction in the case of a breach. We don't talk as much about securing addresses and SSNs and other sensitive data.

Well guess what, if the attacker has access to your system he can just install a password logger and all your obfuscation would be in vain.

All extra security is added value, sure, but focus on other areas wouldn't hurt.
Putting Ubuntu in the same boat as Windows 8 is not fair. Ubuntu has a much simpler UI that hasn't been split into confusing dual tablet/desktop interfaces.

Contrast this:

https://www.youtube.com/watch?v=D6z6hn6wZlg&feature=play...

with:

http://www.youtube.com/watch?v=X0fsyb-ttcw

My only gripe with Unity is that there is no single click workspace switcher instead they copied the stupid OSX two click "Spaces" UI. The single click switcher has been on linux since like 1992 and was an aspect Apple had clearly half assed when 'borrowing' the linux interface. I don't know why Unity copied the botched version.
Live code demo:
http://codepen.io/squarecat/pen/KuHsl

Edit: The article has a demo, but live code is sexy.

Edit2: Now with music, courtesy http://news.ycombinator.com/item?id=4693403
(rudimentary play/pause control at top left via partially-exposed video)
IE10 Snap Mode and Responsive Design
One of the things that bothers me is Surface getting hit for "lack of apps". I don't see much difference between 5,000 crappy apps and 250,000 crappy apps.

There needs to be more than one store. Steam doesn't accept everything that comes along, do they?
Possibly. In my experience, screen protectors are fiddly to put on, and when I had one I never wanted to have to replace it. Far too easy to get bubbles. There's also some amount of cost involved in replacing it, no matter how small. Rubbing alcohol is just something you typically have lying around your house, the marginal cost is less than a penny. A quick wipe with an alcohol-moistened tissue is all it takes.
Does anybody know how they deal with the smart chips on the credit card? Almost no retailer uses the swipe anymore.
www.codeclub.org.uk

I signed up a few weeks ago and visited my local primary school for the first time this afternoon. 9-11 year olds are smaller than I remember.
IPad Mini: From a Designer's Point of View
Startups & Miracles
The odds of a random person being misdiagnosed are quite low. The odds of a person diagnosed with a terminal disease who goes into spontaneous remission having been previously misdiagnosed are quite a lot higher.
The surface is a piece of the ecosystem. The integration between Surface, Windows Phone 8, and (what I think is most important) Xbox should be phenomenal.

I'm a pretty big Apple fanboy. I have the newest iPhone, iPad and Macbook Pro (until yesterday anyway). The one place Apple hasn't taken over is in my living room. My Xbox still rules there and I don't see Apple overtaking that.

If Microsoft can integrate their other products with the excellent living room experience provided by Xbox, I think they can really be successful.