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vamega

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I control my Mitsubishi mini-splits with an esp32. I’d never done any soldering or worked with a microcontroller before, but I was able to install this into 4 units in a single day.

This esphome project has great integration with home-assistant and Apple Home and I’d highly recommend this approach over the Mitsubishi app if your unit is supported and you’re willing to do a little work.

https://github.com/echavet/MitsubishiCN105ESPHome

This looks pretty great. The UI looked fantastic, and the post mentioned that it was open source. However what's open source appears to be the DuckDB extension, which forwards the requests to a remote URL. I've not been able to find the code for the actual UI.

Is the actual UI open source, or is that something MotherDuck is allowing to be used by this while remaining proprietary? Right now it doesn't appear like this would work without an internet connection.

Relational databases are not the preferred storage mechanism at Amazon. If a team wants to use an OLTP relational database it’s possible that it will be a decision they will need to defend at any kind of design review.

Of course there are relational databases running OLTP workloads, but it’s far away from the norm. There was a program a while ago to shift many RDBMS systems onto something else.

Lots of quantitative research uses R. It’s still very popular in the industry.

Insurance is also still using a lot of R. Actuaries I know still use it, and they talk of Python, but I don’t see anyone actually moving to using Python.

For anyone else reading this, the author did post this comment on the blog, and added a reply there too.

Oh man, I had a Bloomberg terminal, and got data from their Data License product.

Even if you have all the calendars, it’s still non-trivial to apply the calendars correctly for different counterparties based on instrument and function.

And corporate actions are awful. The Bloomberg Data license data sometimes doesn’t match what the terminal has. Bloomberg said they updated it in the terminal but would not fix their bulk data sources since the errors were for actions that happened a while ago.

Did you rsync in a loop? Or on demand?

I used Unison at Amazon, and it was the most seamless of all the options I tried. The two way sync was especially useful for being able to open up test results in a browser locally

How did you figure this out? I used to work at ExodusPoint (left about 3 years ago).

It wouldn’t surprise me if it was ExodusPoint, but I’m not sure how one could make that connection from the article.

ExodusPoint had an OMS 3 years ago, so the part in the story about starting trading makes me suspect it’s either an OMS for a new asset class, or a replacement of an earlier system.

Unless the OP joined a portfolio team, and the OMS he’s talking about was to connect that teams strategy to the internal firm wide OMS. I did that for my pod, and I can see a Portfolio Manager making a decision like this.

NFS seems to be a good fit for their use cases, however I don't believe that NFS supports an `inotify` like interface which makes it less useful for usecases like virtual filesystems for developer environments.

Maybe newer NFS revisions allow for the NFS server to notify clients of changes like this, which would be really open things up here.

iVentoy 3 years ago

I’ve used this before. Anyone know how is iVentoy different from netboot?

Let me know if there’s something I can do to help.

Running Unifi on NixOS is a bit of a pain since the license means that there is no binary cache for the package, resulting in frequent rebuilds.

I’ve also not had a great time with the mongo upgrades in the past that caused my controller to not start.