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Ask HN: Upskilling as a Data Engineer
> New languages like Rust/Ocaml/Nim.. if yes then which?
Completely irrelevant. DE is SQL, Python, sometimes Scala/Java.
Get really good at SQL. Learn relational fundamentals. Learn row- and column-store internals. Understand why databases are they way the are. Familiarize yourself with the differen...
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Over-engineering an emoji webcam filter with a neural network (jott.live)
I suspect calculating the average RGB of each emoji and comparing the distances between the average RGB of subsections of the image would have resulted in better emoji choices and better output (simpler, too).
I mean, I get that maybe it’s not the point of this article, but I think the end result wo...
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Ask HN: Why isn't JSON-RPC more widely adopted?
JSON-RPC / OpenRPC seems like a great option for APIs. Why isn't it adopted more widely?
Many of the APIs of projects I've worked with look like essentially like RPC style calls. The URLs are structured as action/method names to do specific things. I like many of the benefits to an RPC approach comp...
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Ask HN: What's on your home server?
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| | Ask HN: What's on your home server? | | 519 points by _moof on Jan 6, 2023 | hide | past | favorite | 456 comments | |
| It's been years (over a decade?) since I've had a server at home but I'm setting one up for media and I got to thinking: what else should I do with this box? So I was wond...
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Ask HN: What sub $200 product improved your 2022
It’s really a badly marketed product. Its real utility isn’t that it uses less oil, but that it cooks incredibly fast. Essentially an oven on steroids.
It’s made cooking so much easier. I usually toss some boneless chicken in with a light coating of soy sauce and cornflour. While the chicken cooks, ...
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Production Twitter on one machine? 100Gbps NICs and NVMe are fast (thume.ca)
I'm going to preface this criticism by saying that I think exercises like this are fun in an architectural/prototyping code-golf kinda way.
However, I think the author critically under-guesses the sizes of things (even just for storage) by a reasonably substantial amount. e.g.: Quote tweets do not g...
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The Computer Science Book (2020) (thecomputersciencebook.com)
It's nice to see the author spent a great deal of time and effort to share with others his learnings. However it's important to note his intention at writing this book: "I’ve chosen to focus on topics and concepts that I’ve encountered in my programming career – things that I know are important." Th...
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Guerrilla guide to CNC machining, mold making, and resin casting (2015) (coredump.cx)
As somebody trying to get into mechanical engineering while living in a small urban apartment, this has been an incredible resource... not that I've made much progress along the lines it describes though.
It's tough to plan a path toward growth in these skills without sustaining inordinate expenses ...
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Ask HN: Good resources to become financially literate
I would like to change my "paycheck to paycheck" way of life and am looking to learn about financial vehicles (US based) and investment basics, and anything else that "I wish I had known when I was 20 years old".
All of the comments so far have talked about mechanical things (researching investment ...
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Ask HN: What is the best source to learn Docker in 2023?
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| | Ask HN: What is the best source to learn Docker in 2023? | | 172 points by lukasfischer on Jan 29, 2023 | hide | past | favorite | 78 comments | |
| I know docker for a long time but I never used it in serious projects. I find it hard to find good and especially up to date tutorials. I’m esp...
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Show HN: Docker rollout – Zero Downtime Deployment for Docker-compose (github.com/wowu)
docker-compose is great for single node docker deployments, but it doesn't have a feature that would allow zero downtime deployments. It's not possible to deploy often if your app goes down every time, and using Kubernetes/Nomad/Swarm on a single node is an overkill.
I created this Docker plugin to ...
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Ask HN: Why did medium.com "fail"?
Medium.com is still up and running so it hasn't failed exactly, but it's not the best platform to go to anymore when it comes to blogging.
The post quality has deteriorated, and it feels like I'm reading the same posts over and over again. Not to mention the stupid paywall which is infuriating.
Why ...
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Build your own fast, persistent KV store (dinesh.wiki)
I wrote a simple dynamodb style database with a python dictionary and a Google pygtrie ("trie" data structure)
It's still a toy but I kept adding features.
I then kept working on it and added distribution with consistent hashing, rudimentary SQL joins, Cypher graph database queries and document stor...
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Show HN: Inquery (YC W23) – Real-time events for Postgres (github.com/inqueryio)
Hi HN, we're excited to share our open source tool with the community!
Inquery is a utility for Postgres that triggers webhooks when rows are inserted, updated, or deleted. It uses database triggers that send low-latency websocket messages to a Go application. This application then calls any configu...
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Show HN: Turn your Pandas dataframe into a Tableau-style UI for visual analysis (github.com/kanaries)
Hey, guys. I've just made a plugin which turns your pandas dataframe into a tableau-style component. It allows you to explore the dataframe with easy drag-and-drop UI.
You can use PyGWalker in Jupyter, Google Colab, or even Kaggle Notebook to easily explore your data and generate interactive visuali...
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IPyflow: Reactive Python Notebooks in Jupyter(Lab) (github.com/ipyflow)
Hi -- author here. I just presented this work at JupyterCon 2023 so I figured it was time to advertise more broadly. There are a few rough edges but my hope is that, by making all the reactive behavior opt-in and only enabled for in-order execution (i.e., cells above the one I execute will never rea...
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Ask HN: What 60 folks can give career and general life advice for 40 folks
I have come across several advice posts targeted towards younger individuals, and sometimes I find myself thinking, "I wish I had known these things earlier in my life."
However, there are certain pieces of advice that are applicable to people of all ages, such as maintaining clean eating habits, en...
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Ask HN: Most interesting tech you built for just yourself?
Maybe you've created your own AR program for wearables that shows the definition of a word when you highlight it IRL, or you've built a personal calendar app for your family to display on a monitor in the kitchen. Whatever it is, I'd love to hear it.
One of these years (maybe this year!) we won't ne...
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Digital clutter: Learning to let go and stop hoarding terabytes (paulstamatiou.com)
I will keep adding an /archive folder to every PC I own and copy the complete contents of my previous /home/ folder into it, including an endless amount of recursive /archive folders.
I will never look at any of those again. But Archeologists in the far future will find my data and it will revolutio...
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JupyterLab 4.0 (jupyter.org)
I keep experimenting with Jupyter in the context of telemetry/fault analysis and then hitting a wall with it where:
- I get an analysis that I like, but there isn't a good way to share it with others, so I end up just taking screenshots.
- There isn't a good way to take the same analysis and plug ne...
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