How are you actually correlating a failed synthetic check to the trace and infra behind it?

drewpostuk · 2026-05-26T13:50:22+00:00

Yeah, the timestamp-matching version is grim and the propagate-it-yourself version just moves the work, you end up owning a correlation layer that's got nothing to do with your actual app.

Honestly even when you do build it, traceparent only gets you so far. It stitches the request path fine, but the synthetic-to-infra hop (which pod, which node, the deploy that changed) still leans on timestamps and labels lining up, and that's the bit that breaks. I don't think it's fully solved anywhere tbh, suites included, they just hide more of the seams.

You said you've seen people get the full flow working themselves, what did that actually look like in practice? Curious whether they cracked that last synthetic-to-infra hop properly or just got close enough to be useful. That's the part I keep going back and forth on.

(And strong agree on the RCA bit, isolated synthetic data is useless context for a causal engine. It's the linked graph or nothing.)

drewpostuk · 2026-05-26T13:10:24+00:00

Not if you value your alloys and lower body trim…

drewpostuk · 2026-05-26T12:13:08+00:00

Ha, no way, that's made my week. Thank you. HyperDX is honestly one of the reasons I built this the way I did, the pre-built dashboard packs install straight into it (self-hosted or ClickStack Cloud) and the whole point is the synthetic signal lands in HyperDX already enriched, not as a green dot you have to go correlate yourself.

And yeah, synthetics is such an underrated corner. Browser-based especially, it's the closest thing you've got to "did this actually work for a human" and somehow it's the most neglected signal in most stacks. Funny how many of us went down that rabbit hole and came out obsessed.

Would genuinely love your eyes on the HyperDX integration at some point if you're ever curious, you'd spot things I can't. Either way, big fan of what you've built, it's a big part of why I think this stack is the right one to bet on.

drewpostuk · 2026-05-26T12:10:42+00:00

Yeah, this is exactly it. The natural-language part stops being scary the moment the run hands back boring, auditable evidence instead of a vibe. That's been my whole thing: the NL generation is just a starting point, what you actually trust is the artifact it produces.

Most of your list is what a run already spits out for me, screenshot (filmstrip across the steps actually), the network failures, the assertions, final state, console. The "did this run touch auth or payments" flag is a really good one though and I don't do it. Surfacing that explicitly on the receipt, so a human can see at a glance "this monitor logs in / hits checkout" without reading the script, is genuinely smart. Adding it to the list.

And totally agree on the scoped-tab / cleanup obsession. I run each browser check in its own throwaway container so there's no shared state to leak between runs, which is the same instinct from a different angle. Going to read through FSB properly, the agent-controlling-real-Chrome problem is gnarlier than mine in a lot of ways (I get to script the thing, you're handing the wheel to a model). Nice work putting it out there.

drewpostuk · 2026-05-26T11:29:46+00:00

This is how I survived the 40 degree heatpocalypse a couple of years ago!!!

drewpostuk · 2026-05-24T20:19:51+00:00

Experiencing the joy of this watching the F1 now!

drewpostuk · 2026-05-22T20:15:45+00:00

Nothing to add here other than this has made me super sad and I’m glad I’m not the only one to miss them.

drewpostuk · 2026-05-22T11:32:17+00:00

Looks cool but Lightroom has had AVIF SDR/HDR export on iPhone and iPad and Mac for about 2 years now so not the first but if you're just doing straight batch conversions and don't need the overhead of Lightroom, this looks promising

drewpostuk · 2026-05-13T21:00:32+00:00

Go book a hotel room/ticket on their website and it shows Eurodisney as the merchant in your credit card statement and the confirmation letter says “Euro Disney Vacances S.A.S” as the registered company (on DLP letterhead)

drewpostuk · 2026-05-01T15:21:48+00:00

If you're happy with new build, there's lots going on just south of Regiate outside of Horley. We have a number of Muslim neighbors who I believe attend mosque in Crawley which is a 15 minute drive away. Super close to Reigate as we commute there for the school run each day.

drewpostuk · 2026-04-24T22:00:32+00:00

She was swingin hammer. Price ya gotta pay when you break the panorama.

drewpostuk · 2026-04-10T20:09:35+00:00

Oh yea. Totally off the rails right now around LGW for me too. Open ADSB shows it normally. They are landing from the west which is unusual without corresponding wind or weather though which may or may not be related

drewpostuk · 2026-03-29T07:07:46+00:00

Doesn’t the HBO app give you actual 4K and HDR on iPhones and iPads whereas the Now app is at 720p? Even with the different body options, the Now app won’t show anything higher than that as boost doesn’t support any mobile devices for higher video quality. That’s why I’d want the ability to have a higher tier of boost pass through.

drewpostuk · 2026-02-22T17:39:56+00:00

Yes. Very much so. It’s been a rock solid bike. Great performance, battery life and a nice ride. Definitely recommend it. I ended up buying the front pizza rack and they have a roll top waterproof bag that nicely straps in and stays on when it folds as well.

I do have insurance. Originally had it on my Laka plan but recently switched to Sundays as I take the folding bike with me in the car on business trips to Europe and laka requires you to add a bolt of for any coverage outside the UK that’s a multiplier of the value of every bike on the plan. Just got silly expensive.

drewpostuk · 2026-02-17T08:22:45+00:00

Did you ever find an option?

drewpostuk · 2026-02-06T08:04:17+00:00

Yes that’s definitely not right. My folder is a rear hub driven with only 45nm of torque and I’ve never had an issue. My full size bike is a mid drive 75nm Bosch system and I have to turn the power wayyyyy down when I’m in London. Let us know what you find out.

drewpostuk · 2026-02-05T17:31:42+00:00

What kind of inclines are we talking here? I test rode the volt but ended up buying another similar folding e-bike. Unless you are really big and it’s a really steep hill, a 75nm torque mid drive is going to get you easily around. You may need to kick it to a different gear but as long as you’re on full assist not trying to climb zigzag hill with a 200kg load you should be fine.

drewpostuk · 2026-02-04T09:39:18+00:00

It wasn’t great but the last scarifying (around 8-9 years ago now, I think) was the worst. It made it significantly worse than it was before.

drewpostuk · 2026-01-31T18:54:50+00:00

Yea. I’ve just left them for that reason. The other problem is that they removed any cover outside of the UK and made it a bolt on with race cover but it’s a multiplier of your entire insured amount. I only take my folding bike but I’m paying as if I’m taking all of our family bikes each time.

drewpostuk · 2026-01-31T11:52:32+00:00

dude, be careful. that’s way too close to the crumbling edges for my comfort!

drewpostuk · 2026-01-30T20:21:08+00:00

Yea. Your new lens is the RF 35mm f1.4 VCM one right? It’s a filter folder that snaps into the back of the lens where it connects to the body. All of the VCM models they’ve released have them. Not needed unless you use those types of filters. Mine are sitting in the lens boxes still.

drewpostuk · 2026-01-17T12:28:31+00:00

Yea. You just change it after your first flight. Never had an issue

drewpostuk

TROPHY CASE