MaxGabriel

20 ms·

61.
by MaxGabriel 6y ago
I'm the CTO at Mercury ( https://mercury.com/ ) and we have 100% of our backend written in Haskell. It's gone really well so far. Answering another commenter's question, I would say the "secret weapons&quo
62.
by MaxGabriel 6y ago
SVB, a popular bank for startups, started offering a card with no personal liability https://www.svb.com/business-banking/business-credit-card/sv... and Stripe’s card also has no personal liability https:/&#
63.
by MaxGabriel 6y ago
Several people in my company use the separate volume workaround and it's been totally painless. Nix has sharp edges but this one is less of a concern than you'd think ime
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by MaxGabriel 6y ago
One way I've seen it used is when you need to order by all or nearly all of the columns in a select statement. Sometimes select a.1, a.2, a.3, ... a.10 GROUP BY 1,2,3,4,5,6,7,8,9,10 conveys the intent more clearly than listing out all
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by MaxGabriel 6y ago
A book can be helpful for other reasons. For a programming book, beginners especially may benefit from a linear structure that covers a predefined amount of content. For example, you can go from zero rails experience to being able to build
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by MaxGabriel 7y ago
That doesn’t sound like the correct reading to me, because foldMap and foldl/foldr have different type signatures https://www.stackage.org/haddock/lts-15.4/base-4.13.0.0/Prel...
67.
by MaxGabriel 7y ago
Nice, that's a good tip. It's a little hard to test small speedups like this, but I used https://hackage.haskell.org/package/bench and got these results: 128MB ️ ~/D/M/h/mercury-web-backe
68.
by MaxGabriel 7y ago
I’m willing to accept less-than-perfect simulation of our production environment in order to speed up development, especially for settings that eg only matter in the case where the machine crashes (big deal in production—not in tests). We a
69.
by MaxGabriel 7y ago
Do you have any recommended config for speeding up tests that hit Postgres? We currently use these settings: fsync = off synchronous_commit = off full_page_writes = off And truncate all tables between each test
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by MaxGabriel 7y ago
Hopefully someone who actually knows baseball can correct me if I get this wrong, but: In baseball, the pitcher stands in the middle of a diamond-shaped field. They throw the ball towards the opposing team's batter, who tries to hit it
71.
by MaxGabriel 7y ago
For anyone else who didn’t know, synchronization rights let you use the music for TV, movies, commercials, and some more things https://entertainmentlaw.uslegal.com/music-industry/synchron...
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by MaxGabriel 7y ago
Sort of. So far most of our hires have Haskell experience. Haskell was the main reason programmers would want to join us, so they would be naturally experienced in Haskell. I’ll have a better idea of how non-Haskellers, including very junio
73.
by MaxGabriel 7y ago
> lenses, MTL, fancy concurrency are “the way” to do things in Haskell, and those require an extraordinary amount of time to learn, then Haskell may not be a good choice for production code from a sociological POV. I don’t think this is
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by MaxGabriel 7y ago
Do you have any thoughts on their mitigations? I would like to protect against attacks like this, but their mitigations seem to have big drawbacks: > Bind Sessions to IP Addresses As they admit, "IPs... change for legitimate reasons
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by MaxGabriel 7y ago
Oh, I forgot to add since many people mentioned this: we currently have nothing in place to automatically rollback migrations. So far that hasn’t been an issue, though.
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by MaxGabriel 7y ago
For our backend, we deploy it as a nix package on NixOS, so we can atomically rollback the deployed code, as well as any dependencies like system libraries. Right now this requires SSHing into each of our two backend servers and running a c
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by MaxGabriel 7y ago
Touch ID support for WebAuthn is live in the latest Chrome!
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by MaxGabriel 7y ago
GHC (Haskell) has -Weverything which is great for this. I’d much rather get all warnings and blacklist the few I don’t want
79.
by MaxGabriel 7y ago
To expand on this, it also lets them target new CPU architectures without having developers recompile code for that architecture. This lets them make incremental improvements (eg armv7), but would also let them use their own CPU architectur
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by MaxGabriel 7y ago
The trader Joe’s on 4th and market in SF does this, seems to work pretty well! They have too much traffic to handle though—the line snaked through 3 aisles the last time I went on a weekday after work.
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by MaxGabriel 7y ago
If you're in need of business banking, you can use mercury.co (my company) and enjoy unlimited length, non-paste-breaking, password manager compatible, no expiration, no character restriction passwords + non-SMS based 2FA :) Hopefully
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by MaxGabriel 7y ago
Brex, at least currently, isn’t the kind of card where you carry a balance. Instead they look at your bank account and say “you have a million dollars in there, you can spend 100K this month” (not real numbers). You pay it all back at the e
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by MaxGabriel 7y ago
https://www.thisamericanlife.org/316/the-cat-came-back/act-t... This one?
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by MaxGabriel 7y ago
Hopefully Mercury can be a success story you can cite :)
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by MaxGabriel 7y ago
0. We worked together at a previous company, Heyzap 1. Mercury is the Roman god of commerce is the etymology. Jason came up with the name, so I’m not sure of his exact thought process, though 2. The logo is inspired by Roman mosaics
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by MaxGabriel 7y ago
The .com was unbeknownst to us one of the highest selling domains of all time. I’m sure the public lists I’ve seen are inaccurate, but it ranks at around 100 after selling for a little over a million.
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by MaxGabriel 7y ago
CTO here. I do hope to support hardware keys like Yubikey in the near future though!
88.
by MaxGabriel 7y ago
Yes it's definitely a more obscure choice. But a cult classic! It's worked out really well for us; the promise of "if it compiles it works" (mostly) holds out
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by MaxGabriel 7y ago
We were a team of 3, with the CEO and myself technical, so ultimately it came down to just co-founder trust. Immad was somewhat skeptical, but after interviewing some amazing candidates who wanted to work for us to use Haskell, he's re
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by MaxGabriel 7y ago
I'm a co-founder and CTO at Mercury. We have some amazing frontend UI (the onboarding flow especially) if you'd like to check it out, and our backend is 100% Haskell. AMA

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