Follow Slashdot blog updates by subscribing to our blog RSS feed

 



Forgot your password?
typodupeerror

Comment Re: Obligatory (Score 1) 155

I assume you mean because water evaporates more quickly than pads are wetted, leading to reduced functionality. This is an implementation problem, not a limitation of the concept itself. Better wetting, materials, and/or using multi-stage evaporative coolers can overcome the limit of older systems typically found in homes.

Comment 25MPH (Score 3, Insightful) 96

It's easy to get great efficiency when you're traveling at 25MPH, where drag is a minimal contributor. Most modern EVs can manage close to 5 mi/kWh at those speeds. Range is then just a question of battery capacity, so is the improvement in energy density, or just packing more batteries into the vehicle?

Comment State level identification (Score 1) 59

Technologies like OAUTH 2.0 have been around for a long, long time, and their purpose is to provide a verifiable audit-trail for users.

And it works! Although there have been (and will always be) security issues, the reality is that technologies like SAML and OAUTH do provide a very useful level of trust.

Except that, although these technologies do allow for a useful transfer of identity, the agents widely used to provide this identity (the IDP) is never an entity that provides a uniformly useful level of identity.

Here I am: Bill Jones (not my real name) citizen of the UK (not my real country, either) and I have no way to properly assert that to, say, Bank of the West (not my real bank, either) or Northern Airlines. (not my real airline)

If I have to assert my true identity, I have a state-issued driver's license or passport. Why do I have no way to assert either of these identification documents electronically?

Why can't I use my passport ID to assert myself to the bank, or the airline?

Seems to me that it would be HIGHLY USEFUL if I could. And it seems to be self-evident and proper that the agencies that issue drivers licenses or passports could offer electronic identification, even if it's sourced out to a tech company with a good reputation.

In the US, it's now become increasingly common to have a unified electronic ID to interact with agencies: see id.me. This is a start, and I know government agencies work GLACIALLY SLOWLY so maybe by the time my grandkids are having babies this could be a thing.

Comment Eh? (Score 4, Interesting) 67

Eh?

> At some point you have to ask why you're using RAID at all. If it's for always-on, avoiding data loss due to hardware failures, and speed, then RAID 6 isn't really am great solution for avoiding data loss when disks get to these kinds of sizes, the chances of getting more than one disk fail simultaneously is approaching one, and obviously it was never great for speed.

If you're at this point, then using drives at all is probably already off the table. But I think this position is probably ridiculous.

I have many years of experience managing file clusters in scopes ranging from SOHO to serving up to 15,000 people at a time in a single cluster. In a cluster of 24 drives under these constant, enterprise-level loads, I saw maybe 1 drive fail in a year.

I've heard this trope about "failure rate approaching 1" since 500GB drives were new. From my own experience, it wasn't really true then, any more than it's true now.

Yes, HDDs have failure rates to keep in mind, but outside the occasional "bad batch", they are still shockingly reliable. Failure rates per unit haven't changed much, even though with rising capacities, that makes the failure rate per GB rise. It still doesn't matter as much as you think.

You can have a great time if you follow a few rules, in my experience:

1) Engineer your system so that any drive cluster going truly offline is survivable. AKA "DR" or "Disaster Recovery". What happens if your data center gets flooded or burns to the ground? And once you have solid DR plans, TRUMPET THE HECK OUT OF IT and tell all your customers. Let them know that they really are safe! It can be a HUGE selling point.

2) Engineer your system so that likely failures are casually survivable. For me, this was ZFS/RAIDZ2, with 6 or 8 drive vdevs, on "white box" 24 bay SuperMicro servers with redundant power.

3) If 24x7x36* uptime is really critical, have 3 levels of redundancy, so even in a failure condition, you fail to a redundant state. For me engineering at "enterprise" level, we used application-layer logic so there were always at least 2 independent drive clusters containing full copies of all data. We had 3 drive clusters using different filesystem technologies (ZFS, XFS/LVM) and sometimes we chose to take one offline to do filesystem level processing or analysis.

4) Backups: You *do* have backups, and you do adhere to the 3-2-1 rule, right? In our case, we used ZFS replication and merged backups and DR. This combined with automated monitoring ensured that we were ready for emergencies, which did happen and were always managed in a satisfactory way.

Comment Re:No thanks (Score 1) 154

The problem here is that people cannot seem to understand that "private" and "privacy" are related but not the same thing. Private is what happens in my house that nobody outside should be privy to. Privacy is the illusion that everything we do is private. I liken this to being photographed and filmed in public and the Karen's crying "don't video me". No Karen, I can and WILL video you in public and there is nothing you can do to stop me.

One has no expectation of privacy in public. None. Social Media IS public. Everything on the internet is public. Some things offer more privacy than others, but if its on the internet, it can and likely WILL BE exposed.

Act accordingly.

Comment Re: A "Citizen Scientists" model may work elsewher (Score 1) 13

Sure, it could be done. We could all volunteer to maintain roads and bridges too. Grab those shovels comrades!

If only we had some way to collectively pay for professionals to perform services for the common wealth. Not everyone would want to pay of course, so we'd need to have some sort of rules and penalties for those who try to avoid paying their fair share. I've got it: we can send them to Mar-A-Lago!

Comment Re:Good to know (Score 1) 41

I believe that the math supports creating a biosphere that would persist on human timescales, just not geologic ones.

IE we could create an atmosphere that would last for 10K years, but would eventually be stripped in 1M years.

If that's worth the effort remains to be seen, but some do think that yes it might be.

Comment Re:The bottle was leaking for years (Score 1) 128

Unless their parents own the company, anyone in hiring has been on both sides. And within the past 10 years (at least), job seekers have had to pack their resumes with keywords in order to get through HR. Yes, people should ideally take the time to tailor their resume to the position to which they're applying, but it's a lot less effort (and usually pays off) to just throw everything at the wall and see what sticks so you can get at least a phone interview.

Also, in the time it takes to customize a resume, the position might be closed, and nobody wants to spend hours mentally reviewing their past experience to highlight parallels with the position they're applying to, especially when there's no guarantee they'll even get to submit that resume, let alone that anyone important will look at it. There's risk involved. If there's a job I really want, I'll tailor my resume. If it's a job that would be lucky to have me.... not so much.

Also, (and I can't believe I'm arguing in favor of Java devs here) if a Java dev is applying, it's likely because they're willing to do the work, not because they don't understand the difference. Many devs avoid JS because they *do* understand it, not because they don't. "I'm willing to pay you a half-million dollars to stab yourself in the eye, but it says here you've never stabbed yourself in the eye before. What makes you think you can do this job?! Idiot!"

Also worth noting that Java and JS are not mutually exclusive, and many Java projects include JS these days, so unless JS is absent from their resume, being a Java dev is probably a point in favor. Plus you mentioned C#, which is basically "Microsoft Java."

Finally, it's ironic because any dev who's been working longer than, say, 5 years has experience in technologies, frameworks, or even just parts of an API a language that are obsolete today. Everyone has had to transition to new technologies and methods, even if they stay in the same role at the same company using the same tools. Being able to pivot isn't the exception; it's the rule.

Point being, a keyword mismatch is an HR-level problem. IMO, nobody doing hiring should toss a good resume just because the experience doesn't match the requirements.

In theory, I agree that a polished resume is a good sign, and I try to present myself well on paper... but as a counterpoint, my good friend of over 30 years never put his resume in anything but plaintext format, uses keyword salad at the end, and he's also one of the best devs I know, and has always had more work than he has time for. I would be interested to learn how well a polished resume correlates with workplace success though, because I might be wasting my time.

Slashdot Top Deals

If money can't buy happiness, I guess you'll just have to rent it.

Working...