Daniel Chatfield

New car keys should stop emitting the keyless entry signal after 10 minutes without movement. Cars without this should default to disabling keyless entry between 11pm and 6am with an opt out in settings.

@GergelyOrosz What regulations?

Just to be clear it’s still not official details what is hosted in US East. Unlikely it would be data (that would go against UK regulations!) Also unclear if eg IAM control plane is there? Another single region AWS service?

No way the UK's tax authority (HMRC) was running their operations off of a US data center ... but they were! AWS us-east-1 outage knocked them offline, and exposed relying on US infra to serve the British public Ironic from a government with ample home grown DCs + talent

@t_blom I’m in SF in a couple of weeks and really want to try a Waymo, do you still need an invite code?

I took a self-driving Waymo to work this morning and got a ride home in a friend’s Tesla, using full self driving the whole way. He didn’t touch the wheel once. It feels like living in a science fiction future.

@_josephwoodward Permanently runs at sufficient scale for 100% of payment processing. To direct all app traffic to it we need to scale it which typically takes a couple of minutes. And yes, engineers are on call for it just like the primary system.

@danielchatfield A deep dive would be great and thanks for taking your time to reply. So I presume engineers go on call for the stand by platform too? Does it run scaled down then you scale out in when you need to fail over to it? Sorry for bombarding you with all of these questions 🙂

I was part of a small team that built a completely independent backup Monzo that runs on a different cloud provider. This ensures that even in extreme incidents we can still provide core payment processing. You can read more here: monzo.com/blog/toleratin…

@_josephwoodward This is naturally complemented by lots of unit tests, acceptance tests etc. – but the only way to be sure it will work when you need it is to actually exercise it regularly in production so that's what we do.

@_josephwoodward 3) Multiple times a week we run an automated test where stand-in directly connects to payment schemes and actually processes payments for a short space of time and then disables itself.

@jonas Mortgage will be close to impossible and will make it hard to sell. It is very hard to get rid of, every time you think you’ve done it, it will come back. If it means you are getting a ridiculous deal and have no intent to sell anytime soon then might still be ok.

The house we are trying to buy has Japanese knotweed! Internet: how bad is this?!

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@lauriewired I think “stability” would be a better description than quality. There is a lot of decades old software that is very stable but objectively terrible quality.

The half-life of code is an interesting predictor of project quality. Linux, has one of the longest code half-life’s at 6.6 years. WordPress, less than 2. Every software change induces some risk. Repos with numerous "change bursts" have the highest incidence of defects.

@mhudack I don’t disagree with that - but you still have to compare the magnitude of it. Is the avg cost of US health insurance a similar cost to UK tax burden from NHS? If not the “out of pocket cost” is a rather meaningless comparator.

@danielchatfield I think the best way to think about premiums is that they’re either paid by your employer or like a tax. I think that even when accounting for them Americans come out ahead in terms of income.

US out of pocket spending on healthcare is only 0.1 percentage points higher than UK out of pocket spending.

@mhudack From the comments on the linked thread I don’t think that’s accurate. It doesn’t include insurance premiums.

@danielchatfield It’s the amount that the average person pays for their healthcare as a percentage of their income. Surely that’s the most important comparative metric?

@FarmerGracy why is the “someone just bought” popup on your website completely fake? Pretty sure that’s not legal…

@t_blom For the NPS example it needs to sum to 100 right. E.g. if you have 1000 promoters and 100 detractors your NPS isn’t 900, it needs to be normalised as a percentage. In the example it sums to 125.

After last month's video on B2B metrics, here's the next episode focussing on metrics for consumer companies. Feedback welcome! youtu.be/8FFucsZhyxU

@GergelyOrosz @kitsunde They’d prefer to make a deal to take a slice of as revenue all while claiming that _they_ don’t do Ads.

@GergelyOrosz @kitsunde For MS it’s worth it even if you only have 3% market share because that’s still meaningful ad revenue. But for Apple that doesn’t want to do Ads, it’s only worth it if it can actually credibly replace Google which is much harder to achieve.

Most companies in the situation of Microsoft would have closed down a product that was so distant second from the market leader from birth onwards as Bing was with Google. Microsoft kept operating and investing in it for 14 years. And now they can pull off this: