Kai Wern

@kai_wern@robot.villas

Kai Wern's programming articles, technical notes, and personal learning experiences, including systems tools, networking, and Recurse Center.

Source: https://kaiwern.com/index.xml

Homepage: https://kaiwern.com/

Posts

55

Posts

Debugging HTTP traffic with tcpdump and tshark #Networking #SysTools #Debugging
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Mar 22, 2026
Run Qwen3.5 locally on your Mac #AI #MachineLearning #Programming
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Mar 1, 2026
Unblock 0.0.0.0 Connections on macOS via CLI #Tech #MacOS #Networking
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Feb 20, 2026
Converting Fujifilm RAW files to JPEG with CLI #Photography #CLI #OpenSource
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Jan 22, 2026
CORS issue using Phoenix LiveView to direct upload to Backblaze or Cloudflare R2 #Programming #WebDev #Cloud
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Jul 29, 2023
Some useful psql commands to know #PostgreSQL #Database #DevTips
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Oct 24, 2022
How can I write more consistently #Writing #Productivity #Learning
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Sep 7, 2022
Benchmarking HTTP server stuck at 16k requests #Programming #Networking #Performance
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Aug 11, 2022
About #Programming #Tech #Learning
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Jul 29, 2022
Last 6 weeks in the Recurse Center #RecurseCenter #Programming #Learning
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Jul 29, 2022
Writing PostgreSQL extension in Rust With pgrx #Rust #PostgreSQL #Programming
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Jul 20, 2022
Expose new port in iptables #Networking #Linux #SysAdmin
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Jul 2, 2022
Handy `lsof` options to know #Programming #Tech #DevTools
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Jun 20, 2022
Implementing tests rerun in `ExUnit.run` in Elixir #Elixir #Programming #SoftwareDevelopment
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May 26, 2022
Things I learn while testing files in Rust #Rust #Programming #SoftwareDevelopment
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May 20, 2022
First 6 weeks in the Recurse Center #RecurseCenter #Programming #Learning
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May 12, 2022
Logging Thread ID in Rust #Rust #Programming #Logging
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May 7, 2022
Decomposition #Programming #Tech #Learning
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May 4, 2022
Writing a custom Vim Command #Programming #Vim #TextEditor
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Apr 28, 2022
Solutions I'm trying to have a productive day #Productivity #SelfImprovement #WorkLife
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Apr 27, 2022
Benchmarking and writing a concurrent mini Redis in Elixir #Elixir #Programming #OpenSource
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Apr 5, 2022
Writing a mini Redis server in Elixir #Elixir #Programming #OpenSource
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Apr 4, 2022
Writing a simple Firefox Extension #Programming #WebDevelopment #BrowserExtension
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Feb 12, 2022
Writing a simple Redis Protocol parser in Elixir #Elixir #Programming #OpenSource
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Jan 4, 2022
2021 in Review #Reflection #PersonalGrowth #YearInReview
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Dec 13, 2021
What you need to know about PostgreSQL timezone #PostgreSQL #Database #Programming
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Jul 20, 2021
Debugging with tracing in Elixir with recon_trace #Elixir #Programming #Debugging
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Jun 27, 2021
The one simple trick to accomplish your (so many) goals #Productivity #SelfImprovement #Goals
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Jun 15, 2021
Blue Green Deployment with Nginx for Elixir/Phoenix Release #Programming #DevOps #Elixir
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May 15, 2021
Don't Be Too Hard on Yourself #SelfImprovement #Mindfulness #Learning
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Mar 23, 2021
2020 in Review #Reflection #PersonalGrowth #Review
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Jan 19, 2021
Debugging With Tracing in Elixir #Elixir #Programming #Debugging
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Nov 2, 2020
Identify and specify Identity File used by SSH #SSH #Networking #Security
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Aug 20, 2020
Deploying Elixir/Phoenix Release to Production #Elixir #Phoenix #Programming
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Jul 20, 2020
Building Elixir/Phoenix Release With Docker #Elixir #Docker #Programming
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Jun 20, 2020
What you might want to know about GenServer #Programming #Elixir #SoftwareDevelopment
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May 21, 2020
Essential Date Functions for Grouping in PostgreSQL #PostgreSQL #Database #Programming
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Apr 14, 2020
AWS EC2 Disk Space Full #CloudComputing #DevOps #SysAdmin
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Mar 16, 2020
Ignoring file instead of folder with the same name in .gitignore #Git #Programming #DevOps
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Feb 23, 2020
Using Tesseract OCR in Elixir/Phoenix #Programming #Elixir #OCR
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Jun 3, 2019