Hacker News Reader

dvlimanon Ask HN: What Are You Working On? (April 2026)

I have been working on a few iOS apps for my own use case (stock/options trading)

Price & Volume: https://apps.apple.com/us/app/stock-price-volume/id676015355... It is often helpful to see volume supports price action. I have the price/volume change color-coded with gradients so it is easy to see if they are following or breaking trends

Options Premium: https://apps.apple.com/us/app/options-at-the-money-premiums/... See all options premium on one screen

Stock Portfolio & Watchlist: https://apps.apple.com/us/app/stock-portfolio-watchlist/id67... The idea is I'd like to group stocks by sectors and see if there is sector rotation going on. I will have an UI update soon

I get the data from my brokerage account. All apps is free but user may choose to support/donate if willing

dvlimanon Ask HN: Share your personal website

https://dvliman.com https://postwalk.org

dvlimanon Ask HN: What Are You Working On? (December 2025)

https://apps.apple.com/us/app/options-at-the-money-premiums/...

I am working on the android version of this app. It is a tiny tool for options trader to see all the premium on one screen. Here is the reddit thread where I initially launched it: https://www.reddit.com/r/Optionswheel/comments/1nlelbp/i_mad...

If you trade stock or options, would love to get your feedback! Thank you.

dvlimanon Ask HN: What are you working on? (September 2025)

I am building an Options: At-the-Money Premiums tracker to help me view all the options premiums on one screen. Here is the app: https://apps.apple.com/us/app/options-at-the-money-premiums/...

Launched on Reddit last week: https://www.reddit.com/r/Optionswheel/comments/1nlelbp/comme...

If you guys trade options (selling CSP and CC), I would love to hear your feedback.

dvlimanon Ask HN: Hire freelancer devs, or a dev shop?

I would love to help as well. My contact is on my profile.

dvlimanon Ask HN: Show me your half baked project

https://calculator2go.com/ - this project is designed to be half baked. I would add tools when I have time

dvlimanon Video streaming at scale with Kubernetes and RabbitMQ

No specific reason. It could have been built in any language. It was just the language we were using and enjoyed at that time.

dvlimanon Video streaming at scale with Kubernetes and RabbitMQ

I built a similar video pipeline, not on Kubernetes but using EC2 instances for those hungry FFMPEG encoder.

The system differ in that it was not user generated video content. It was coming from the cameras in our fitness studio.

Here is the article if anyone intereste to read about: https://dev.to/dvliman/building-a-live-streaming-app-in-cloj...

dvlimanon Ask HN: Tell us about your project that's not done yet but you want feedback on

I am working on https://calculator2go.com/?utm_source=hackernews - it is very basic. Nothing technical. I would add tool as I feel need. It is a hands-on approach for me to learn marketing, copywriting, etc.

dvlimanon Feather – open source icons

Another project by a friend of mine. Shameless promotion: https://akaricons.com/

dvlimanon Ask HN: Where can I find open source icons for my apps?

My friend made this: https://akaricons.com/

Let me know if it helps. I can forward your message to him

dvlimanon Ask HN: Open-source DB- ERD tool

How about this? https://github.com/BurntSushi/erd

dvlimanon Ask HN: Best Course to Learn Clojure?

hello, I am planning to write articles about this topic in Clojure. Anything specific in webapp/scripting that might of interest to you?

dvlimanon To ORM or Not to ORM

I personally prefer tools like https://github.com/jkk/honeysql

It helps build queries programmatically but doesn't abstract / get too much in your way.

On the "mapping" side, the resultset is just a map.

This is where languages that expose data-first shines

dvlimanon Ask HN: Who wants to be hired? (May 2019)

Los Angeles or Remote

I am a senior backend engineer with experiences building backends. Built messaging server, API services, etc. I look for simple solutions to complex problems.

Skills: Java/Kotlin, Erlang, and some clojure, Postgres, Redis, Mongo, Nginx, AWS

Email: limandavid@gmail.com

Github: https://github.com/dvliman

dvlimanon Ask HN: Freelancer? Seeking Freelancer? (May 2019)

SEEKING WORK | Software Engineer | Los Angeles or Remote

I am a senior backend engineer with experiences building backends. Built messaging server, API services, etc. I look for simple solutions to complex problems. I can take projects from concept to launch, or be part of your team

Skills: Java/Kotlin, Erlang, and some clojure, Postgres, Redis, Mongo, Nginx, AWS

Email: limandavid@gmail.com

Github: https://github.com/dvliman

dvlimanon Goodbye Joe

Thanks for sharing about Joe. I have only met Joe a couple times in Erlang BEAM conference and I can say that is how my memory of him as well.

dvlimanon Ask HN: Should I learn Erlang?

There are plenty of companies using erlang in production. The community is relatively small and almost everyone knows each other. Yes, you can find erlang jobs or elixir jobs - a lot of those these days (PM me if you are looking)

Besides, erlang definitely gives you new perspective in building large scale system; supervision tree (let it crash), the actor concept, message passing, preemptive vm, built-in distributed erlang nodes, the repl, hot code swapping - any much more

The power comes from the whole ecosystem. Concurrency is built from ground up on language & vm level.

dvlimanon The British Library Puts Over 1M Images in the Public Domain

in case if anyone interested in the mechanical curator bot source code: https://github.com/BL-Labs/embellishments

dvlimanon Show HN: Deepstream.io – A scalable server for realtime webapps

Is there a documentation of transport protocol? i.e http sse, websocket? ...peeking the source code a little bit - tcp-socket?

dvlimanon Show HN: Clojure by Example

this is exactly how intro to programming language should be (for people who already know other languages)

dvlimanon [dead]

I have been in this situation. It was exactly 30 days as well. Found a new job in few days and quick enough to transfer the work visa. You can do it!

dvlimanon Born of Reddit, Imgur now dwarfs the ‘front page of the Internet’

though I can't figure out how they monetize imgur..

dvlimanon F1: A Distributed SQL Database That Scales

This is not new by any mean...

dvlimanon You don't need a CS degree to become a web developer. Here's why.

This will lead to long debate. As for developer job: I have seen (many) incompetent CS graduate. I have also seen genius self taught developers. As for research job, it requires strong CS foundation.

dvlimanon How we screwed (almost) the whole Apple community

unrelated discussion. did anyone think this site is hard to read? the font size and color...

dvlimanon Ask HN: How does Google uses the Go Programming Language?

cloudflare.com uses go in production. http://blog.cloudflare.com/go-at-cloudflare

dvlimanon Does social media use in Indonesia predict Facebook's decline?

I am an indonesian who lives in US. You are half right.

The problem is that internet is scarce and they rely on mobile phone for almost anything, which explains why RIM is doing so well there (Blackberry Messenger package bundled in their phone services)

They are used to short messages like twitter, sms, bbm. No, facebook's decline is not the case here.

dvlimanon Since when has Craigslist asked for money when posting a job listing?

wow too bad. craigslist is just killing itself.