dbenhur's comments

dbenhur | 7 years ago | on: At Blind, a security lapse revealed private complaints from tech employees

You can read plenty of behavioral signal from how candidates interact with interviewers while solving hard technical challenges. But many companies don't really invest much into training interviewers how to effectively interview and gather useful signal or calibrating their evaluation to the goals and standards of the organization.

dbenhur | 7 years ago | on: Amazon move off Oracle caused Prime Day outage in one of its biggest warehouses

coe.amazon.com if you're inside. Larry must have paid for this article. Some things it doesn't say: Large database migrations are hard -- especially so when there's been many years of accumulated dependency on the prior data store/model. Amazon conducts a lot of CoEs -- I suspect more than 1000/yr. Hundreds of prior CoEs implicate behavior of relational databases (and particularly Oracle) at scale -- there's a reason Amazon has an expensive multi-year program to get off Oracle.

dbenhur | 7 years ago | on: A Spectre is Haunting Unicode

Wikipedia remembers: "The Scroll Lock key was meant to lock all scrolling techniques, and is a vestige of the original IBM PC keyboard. In the original design, Scroll Lock was intended to modify the behavior of the arrow keys. When the Scroll Lock mode was on, the arrow keys would scroll the contents of a text window instead of moving the cursor. In this usage, Scroll Lock is a toggling lock key like Num Lock or Caps Lock, which have a state that persists after the key is released."

https://en.wikipedia.org/wiki/Scroll_lock#Window_scrolling

dbenhur | 7 years ago | on: The Cult of the Root Cause

Yes, root cause analysis and corrective action should only to be done with Cook's insights in mind.

"Post-accident attribution to a ‘root cause’ is nearly always wrong." "Post-accident remedies usually increase the coupling and complexity of the system. This increases the potential number of latent failures and also makes the detection and blocking of accident trajectories more difficult."

How Complex Systems Fail is short but loaded with value; if you haven't read it, go do so now!

dbenhur | 8 years ago | on: Meltdown Update Kernel doesnt boot

Most vehicle recalls are not of the form: return your vehicle, we give you a new fixed one; but rather: bring your vehicle to one of our dealers and they'll perform some action to repair the defect.

The later is pretty analogous to issuing firmware and OS patches to mitigate the flaw.

dbenhur | 8 years ago | on: Slack is offline

Yeah and they've had service degradation and availability issues long before Slack also. ;-P

dbenhur | 8 years ago | on: Wind Energy Is One of the Cheapest, and It's Getting Cheaper

You make no sense with your statement about depreciation. Depreciation is expense which lowers profit. It's the accounting mechanism we use to spread one-time capital cash outlays over the service life of an asset so as to more realistically calculate profit and loss on an ongoing basis.

dbenhur | 8 years ago | on: Ageism is forcing many to look outside Silicon Valley

> Over the last 8 weeks leading up to defense we still worked our normal FT employment and completed revision and defending our individual dissertations while averaging 5-7 hours of sleep a week.

Cool story bro, but utter bullshit. People who do that die, they don't have the mental capacity to defend a dissertation. Eight weeks at 1 hr/night is not something humans can do.

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