arter45

10 ms·

91.
by arter45 9mo ago
>On orbit, we fixed it by pushing an FPGA update How does that work? Do you actually VPN into an orbiting satellite? If so, how do you get a public IP for a satellite? Do you just ask an average ISP?
92.
by arter45 9mo ago
Another source says: > It "involved an attempt to disrupt communication between generating installations and grid operators across a large area of Poland". I doubt we will have all details, but I suspect this kind of communic
93.
by arter45 9mo ago
>Memory-mapping the files made things worse due to the per-file mmap/munmap overhead Could you elaborate on this?
94.
by arter45 9mo ago
I understand, but in this specific arena, because of the network effect, interoperability is important so you can hope to make a competitive product. More in general,standard protocols are important but they don't necessarily avoid loc
95.
by arter45 9mo ago
https://www.birdy.chat/terms says Latvia
96.
by arter45 9mo ago
Social networks and chat apps are mostly dominated by the network effect. Since the purpose of these apps is literally putting you in contact with other people, you tend to use the same app/social network most of your friends and famil
97.
by arter45 9mo ago
In fact, Apple is still part of the DMA list with Safari, iOS, iPad OS and App Store.
98.
by arter45 9mo ago
Interesting! I don't much about crypto or trading (much less crypto trading!), though. How long did it take for you to learn this business domain? From a more technical standpoint, did you manage to stay in business with a single EC2 m
99.
by arter45 9mo ago
"You need thick skin, you need common sense and you need to be human". Massive respect to all the people working calls after calls often with lives at stake.
100.
How WhatsApp Scaled to Billions of Users(singhajit.com)
18 points by arter45 9mo ago|3 comments
101.
by arter45 9mo ago
(Blog post not mine)
102.
by arter45 9mo ago
In the session scenario, I was talking about firewalls, not BGP routers (although, of course, you could have firewall features on a BGP router). What I'm saying is, there are ways to validate and carry out network changes in a pretty r
103.
by arter45 9mo ago
Central banks do a lot of things, including buying and selling currency with foreign partners. If you’re trading using weak or unstable currencies, gold may be a useful alternative.
104.
by arter45 9mo ago
Rollback is of course useful when things go wrong (and by the way the routers CF use natively support rollback features). What I’m questioning is flapping as a structured way to carry out network changes. Even a slow flap can cause issues d
105.
by arter45 9mo ago
Or the DNS configuration change :)
106.
by arter45 9mo ago
This specific outage is the equivalent of this scenario: You have an if/then statement with N conditions in AND. You remove one condition, leaving the rest of the statement unchanged. What happens? The answer is that if you remove one
107.
by arter45 9mo ago
Yes of course, but from a test perspective, this kind of mistake, given their configuration snippet and how they wrote the RCA, it seems to suggest they were simply diff-ing the initial and desired configs as any VCS would do (or, more like
108.
by arter45 9mo ago
I’m not sure this would be a good idea in this kind of change. Flapping is bad in the networking world. Flapping BGP routes, specifically, is bad because it can stress all BGP routers involved to the point where they can “go crazy”. Routes
109.
by arter45 9mo ago
I've had to read the RCA a couple of times to (probably) get what happened, even if I'm reasonably familiar with BGP. Basically, my understanding (simplified) is: - they originally had a Miami router advertise Bogota prefixes (=su
110.
by arter45 9mo ago
End users do all kinds of stuff, but as a developer you're supposed to gather (even elicit, at times!) requirements from users or stakeholders who act as proxies for actual users. Store something so you can read it in a year or even af
111.
by arter45 9mo ago
Thanks, I'll look into it. My current setup for this kind of use cases is pretty simple. You essentially keep an additional field (or key if you're non relational) describing state. Every time you change state, you add a new row&#
112.
by arter45 9mo ago
Sounds cool! Do you keep all data forever in the same table? I assume you need long retention, so do you keep everything in the same table for years or do you keep a master table for, let's say, the current year and then "rotate&q
113.
by arter45 9mo ago
My understanding is that Datomic uses something like Postgres as a storage backend. Am I right? Also, it doesn't support non-immutable use cases AFAIK, so if you need both you have to use two database technologies (interfaces?), which
114.
by arter45 9mo ago
So basically something like this? (timestamp, accountNumber, value, state) And then you just SELECT state FROM Table WHERE accountNumber = ... ORDER BY timestamp DESC LIMIT 1 right?
115.
by arter45 9mo ago
Friends don’t (usually?) earn money by collecting data on you and trying to influence you. Of these were completely (and actually) not for profit companies simply providing advice based on whatever knowledge base they have without other add
116.
by arter45 9mo ago
There are two dimensions to this: knowing stuff and act on stuff. On one side, you have technical knowledge. At the extremes you have people who can’t even power on a laptop and expert developers in 10 languages and SREs and everything else
117.
by arter45 9mo ago
If, for whatever reason, you want to post under an alias, you may want to keep a website for things you want people to attribute to you, and a blog for thoughts you don’t want to be directly associated to you.
118.
by arter45 9mo ago
Ok but what difference between, say, sport bets and “prediction market” is significant enough to allow people who can directly influence the result bet on it, but only in “prediction markets”?
119.
by arter45 9mo ago
I agree. What I'm saying is that, especially because way less critical applications of this "bet and act to win the bet" rule (sport, insurance,...) are notoriously illegal, I don't see why worse use cases (bet on a mili
120.
by arter45 9mo ago
Game fixing is a known crime in many jurisdictions. If you are a football/baseball/soccer player and you bet your team will lose, you have an obvious way to drastically increase your odds (especially if you are a top player) - pla

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