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donpark

572 karma · joined June 22, 2010

https://twitter.com/donpark http://blog.docuverse.com

[ my public key: https://keybase.io/superdon; my proof: https://keybase.io/superdon/sigs/x8N-xeM2DR6Qs9kHK_Sjoc0fGeYUZZpbtGwj1f4GzXg ]

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donpark··on Costs of running a Python webapp for 55k monthly users
Cost of servers and DB don't match DO's current pricing.

4 vCPUs, 8GB RAM, 80GB disk costs $40/month now so two servers alone cost $80 which is higher than $69.

Either DO raised pricing or they got some special discount.

donpark··on Show HN: Audino – Open-Source Audio and Speech Annotation Tool
README.md file could use an image. I recommend the one from this page: https://github.com/midas-research/audino/blob/master/docs/tu...
donpark··on Ask HN: Has anybody shipped a web app at scale with 1 DB per account?
There is an alternative solution: account-specific set of tables. Just add account id to table names like 'id_12345_posts' and 'id_12345_invoices'. To scale, shard them by account ID.
donpark··on Show HN: Online Town – A better way to gather online
> Has anyone ever tried this approach of a virtual real-life emulating community with video calls?

Yes, in stealth mode around 5yrs ago but couldn't get funding for launch. It was too early and too general. High battery drain didn't help either.

donpark··on Building a walkie-talkie for remote work
While I don't think Walkie-Talkie metaphor works for remote teams in general due to becoming an open invite to interruption, it may work for teams that need to work in tight collaboration, like in rapid emergency response and battle management even when everyone is in the same building.
donpark··on The Automated Dungeon Master
I think there are other forms of dungeon mastering that use little or no AI while delivering the same if not better experience.
donpark··on Nototo – Build a unified mental map of notes
Re 1. The template is a nice 'developer' solution but I think the best is freeing users from the burden of learning unnecessary abstractions.

Re 2. I mean the gesture of pressing mouse or finger down on an island/hill then drag to another island/hill then releasing to gesture that the two are related. The line I mentioned is just a feedback mechanism. You can also use an outline of the first island/hill. The ideal reaction to such a gesture is bringing the two notes/topics closer which is where my comment about changing location and/or scale of island/hill while keeping the relative direction (angle) constant. I think relative direction more sticky than the other two.

donpark··on Nototo – Build a unified mental map of notes
Suggestions from an old side-project: automate land management.

- Placing a note automatically creates an island around it with a recognizable landmark nearby. Add a tree after each addition. Add or enlarge a pond after each deletion.

- Dragging a line between two islands/hills either merges the two or moves them closer, depending on the size of the islands/hills involved and the population of the area. Locations, distance, and scale can change but the relative direction should not.

donpark··on Problems with TypeScript
Worth it at component level. Hassle at application level.

I use TS to write components and JS to write the app using those components.

donpark··on KeyV2: A Parametric Mechanical Keycap Library
Very cool although I don't think this will be more usable than normal ortholinear keyboards. Key problem is that we don't precisely know where our hands are relative to the keyboard so sculpting keycap surfaces to be close to finger tip will create more confusion than help.
donpark··on If the universe is 13.8B years old, how can we see 46B light years away? (2018)
My two cents worth: One is a measure of time. The other is a measure of distance. The two are unrelated.
donpark··on BRL-CAD: Open-Source Solid Modeling
screenshots at http://brlcad.org/gallery/index.php?/category/12
donpark··on A mathematician's way of converting miles to kilometers
lazy me: cmd+L 5mi = ?km <enter>
donpark··on SATNet: Bridging deep learning and logical reasoning with differentiable SAT
code: https://github.com/locuslab/satnet
donpark··on Foreign Minister Taro Kono to ask media to switch order of Japanese names
Same for Koreans. Capitalizing the first character of the 'generational' name and lowercase for given name could work.

But I think emphasizing the given name offers better UX so given name should be all caps and family name should be all lowercase like this: YUNG Kam soh or soh Kam YUNG.

donpark··on Breakfast is a relatively modern invention
True although I've been having traditional Korean meals (mostly rice and lightly cooked vegetables) in America for decades. Having Korean supermarkets within driving distance is one of the hidden benefits of living in California.
donpark··on Breakfast is a relatively modern invention
So breakfast is an American invention? I ask because Korean words for breakfast and brunch existed even before America was founded.
donpark··on South Korean government to switch to Linux: ministry
I think SK government will not see problems in migration to Linux as blockers but as a major opportunity to help its IT businesses grow, particularly in the e-gov market. Net result: more choice and more business for all.
donpark··on South Korean students flock to Japan
Much of it can be blamed on propaganda driven by economic decline and political scapegoating. While Korean music, drama, and movies are popular in Japan, consumers are mostly women. Among small but growing and very vocal population of Japanese men, Korea-bashing books and manga are popular. Later trend is not unrelated to continuing economic decline of Japan. And Japanese politicians are leveraging and fueling that trend to divert the blame.
donpark··on Madoko – a fast markdown processor for writing professional documents
https://github.com/koka-lang/madoko
donpark··on Ask HN: Favorite note-taking software?
nvALT on Mac. Open source but brittle and needs a rewrite. Crashes occasionally.
donpark··on Scooter startup Bird is seeking a $2B valuation
Two issues worth mentioning IMO:

- daily loss rate could escalate as thieves get better & friends join in.

- personal injury - you're encouraging people to ride scooter without a helmet.

donpark··on Open-sourcing Sonar, a new extensible debugging tool
I think he meant appending "for mobile apps" in the title instead of burying key constraint in midst of wordy paragraphs. There is quite a distance between clarity and fine prints.
donpark··on Self-Awareness for Introverts [pdf]
IMO it's not self-awareness that most people lack but lack of willingness to self-control fueled by the notion that 'being natural' is a good thing.

Given that the will is there, the best way to influence your behavior is mental modeling because how you see things will affect not only your mind but your body and imagination is a way to see what you want to see.

Whether the model is correct or not doesn't matter. Half-believing it is sufficient. That's how superstition works. Beware that models, not unlike drugs, not only can but often do have side-effects.

donpark··on Salsify – A New Architecture for Real-time Internet Video
I don't see anything in what they did that won't work with HEVC or AV1. They just hacked VP8 to be able to save and restore codec state per frame so they can generate multiple versions of the next frame, choosing smaller when network condition is bad. Their innovation is in preventing congestion rather than reacting to the aftermath of congestion.
donpark··on Show HN: Convert screenshots of equations to LaTeX
Add code generator to complete the product. ;-p
donpark··on Why Is Bitcoin Valuable?
It had potentials but none of that matters with lack of protection against overhyped valuation. It's not a currency if it what you paid for a cup of coffee could've bought a Ferrari the next day. And blockchain is more like plumbing than some star-fangled magic. Last time I got excited about plumbing is...never mind.
donpark··on Fermented Shark, Anyone?
Well, it's an acquired taste and pretty expensive. Goes well with alcohol and will clear your sinuses. Definitely memorable.
donpark··on Why we never thank open source maintainers
Thanking is beneficial mentally to the thanker. Do it for yourself.
donpark··on Show HN: Free Math, an offline React app for managing digital math homework
Looks great. Aside from ideation and execution, presentation was great too.
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