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David 'JoelKatz' Schwartz Profile
David 'JoelKatz' Schwartz

@JoelKatz

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Replacing TradFi with decentralized, censorship-resistant blockchain tech. CTO at Ripple; one of the original architects of the XRP ledger.

San Francisco, CA
Joined April 2009
Don't wanna be here? Send us removal request.
@JoelKatz
David 'JoelKatz' Schwartz
7 months
We can fight each other or we can align against those who think people shouldn't be allowed to make their own choices. Do we want to repeat the mistake that got us into the mess Trump's getting us out of?.
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@JoelKatz
David 'JoelKatz' Schwartz
2 days
And here are the two maintenance windows. Fortunately, all is even better now and I expect to consider the hub in production very soon. 2/2
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@CPAC
CPAC
15 days
Zohran Mamdani: He votes for activists, not you
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@JoelKatz
David 'JoelKatz' Schwartz
2 days
After a week of solid operation my hub had a rough day. But it was for a very good reason -- the switch it's connected to received a massive upgrade and my bandwidth measurements are much better now. These images so the solid operation. 1/2
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@JoelKatz
David 'JoelKatz' Schwartz
3 days
Got my XRP belt on, wearing an XRP t-shirt, holding an XRP rewards credit card at XRPresso … someone pinch me?
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@JoelKatz
David 'JoelKatz' Schwartz
3 days
The triskelion gallery at Ripple's SF office.
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@JoelKatz
David 'JoelKatz' Schwartz
4 days
Is that drummer wearing a Ripple shirt? .
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@JoelKatz
David 'JoelKatz' Schwartz
7 days
I'd be a bit concerned if the 10% latency line ever hit 200ms. That still wouldn't have a real-world impact, but would be concerning. Since I restarted the server five days ago, it's never gone over 33ms.
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@am570themission
WMCA The Mission
10 days
Be sure to downlaod our app and tune in now!
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@JoelKatz
David 'JoelKatz' Schwartz
7 days
I'm puzzled (though not concerned) by the latency spikes. They only occur when outbound bandwidth usage is higher than usual (though its always well within what the system should easily handle) but do not occur every time outbound bandwidth is higher than usual.
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@JoelKatz
David 'JoelKatz' Schwartz
7 days
Last three days look good and my hub should be ready to be considered in production next week.
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@JoelKatz
David 'JoelKatz' Schwartz
7 days
Yay! I wish more State courts would robustly enforce the Eight Amendment's prohibition on excessive fines and penalties. Totally right here.
@LizMacDonaldFOX
Elizabeth MacDonald
7 days
#BREAKING New York Appellate Division tosses out penalty in NY Civil case brought against Trump by NY AG Letitia James. Penalty was $364 million + interest, since rising to approximately $500 million. The court’s disgorgement order said it was excessive fine that violates
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@JoelKatz
David 'JoelKatz' Schwartz
8 days
I have no idea what this is about but just reading this letter, it seems extremely inappropriate and borderline corrupt to me.
@AnnaBower
Anna Bower
9 days
Ed Martin’s latest stunt: pressuring someone he is criminally investigating to resign from public office “as an act of good faith.”
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@JoelKatz
David 'JoelKatz' Schwartz
11 days
I included the bandwidth chart twice and forgot the peer disconnection chart! Fortunately, it's very boring.
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@JoelKatz
David 'JoelKatz' Schwartz
11 days
Here's the past 24 hours. All good. There is one spike in latency that only affected a few links that were already poor. The tiny drop in network b/w appears to be a monitoring dropout and doesn't show on the switch port's monitoring. I think we're nearly production ready.
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@barstoolsports
Barstool Sports
7 days
RT @PardonMyTake: Tuesday night max woke Big Cat up with a flashlight at 2am because he thought we were going to get sued. @forthepeople ht….
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@JoelKatz
David 'JoelKatz' Schwartz
12 days
I think the glitch was just one minute where for some reason the monitoring system didn't gather data. I'm working on some improvements to the collector that might fix this, but it's not likely a hub issue.
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@JoelKatz
David 'JoelKatz' Schwartz
12 days
The past 24 hours of the hub's performance looks solid. There's a tiny glitch at 12:58 that might be the monitoring system. Currently it's handling 11,000 requests per second from 173 peers with about 0.006 seconds from the average request coming in to the reply going out.
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@JoelKatz
David 'JoelKatz' Schwartz
12 days
My two youngest grandkids call @McDonalds "Old McDonald's".
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@JoelKatz
David 'JoelKatz' Schwartz
12 days
This is a lie. All the court held was that physically assaulting someone to remove their Israeli flag was evidence that could help show that the assault was motivated by racial or religious animus.
@DMichaelTripi
Dominic Michael Tripi
12 days
NEW: US federal court has ruled that burning Israeli flags is now illegal, deeming it an act of “racial discrimination” not of political protest. It is still legal to burn American flags in the US.
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@JoelKatz
David 'JoelKatz' Schwartz
13 days
I have my first bit of weird data from the hub. I'm tracking peer round-trip latency at application level and there was a weird spike that shows significantly worse performance for a period of about 15 minutes. The spike starts at about 1:59 AM PDT. The thing that puzzles me
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