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parent
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<div>
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<h1 style="margin-bottom: 0px;">Blog</h1>
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<p style="margin-top: 0px;">A collection of my thoughts, some of them may be interesting</p>
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<p><a href="./blogs/fpga-fun.html">[ FPGA Fun (CHIP-8 in hardware) ]</a> - April 20th, 2024</p>
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<p><a href="./blogs/nws-postmortem-11-8-23.html">[ NWS Postmortem 11/08/23 ]</a> - November 16th, 2023</p>
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<p><a href="./blogs/side-project-10-20-23.html">[ Side Project Log 10/20/23 ]</a> - October 20th, 2023</p>
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<p><a href="./blogs/side-project-8-15-23.html">[ Side Project Log 8/15/23 ]</a> - August 15th, 2023</p>
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<p><a href="./blogs/side-project-8-8-23.html">[ Side Project Log 8/08/23 ]</a> - August 8th, 2023</p>
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<p><a href="./blogs/side-project-7-12-23.html">[ Side Project Log 7/12/23 ]</a> - July 12th, 2023</p>
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<p><a href="./blogs/side-project-4-29-23.html">[ Side Project Log 4/29/23 ]</a> - April 29th, 2023</p>
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<p><a href="./blogs/side-project-3-27-23.html">[ Side Project Log 3/27/23 ]</a> - March 27th, 2023</p>
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<p><a href="./blogs/side-project-3-20-23.html">[ Side Project Log 3/20/23 ]</a> - March 20th, 2023</p>
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<p><a href="./blogs/spring-break-2023.html">[ Spring Break 2023 ]</a> - January 20th, 2023</p>
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<p><a href="./blogs/doing-c-assignments-in-csharp.html">[ Doing C assignments in C# ]</a> - March 18th, 2022</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/fpga-fun.html">[ FPGA Fun (CHIP-8 in hardware) ]</a></h3>
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<p style="margin-top: 0px;">April 20th, 2024</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/nws-postmortem-11-8-23.html">[ NWS Postmortem 11/08/23 ]</a></h3>
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<p style="margin-top: 0px;">November 16th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-10-20-23.html">[ Side Project Log 10/20/23 ]</a></h3>
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<p style="margin-top: 0px;">October 20th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-8-15-23.html">[ Side Project Log 8/15/23 ]</a></h3>
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<p style="margin-top: 0px;">August 15th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-8-8-23.html">[ Side Project Log 8/08/23 ]</a></h3>
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<p style="margin-top: 0px;">August 8th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-7-12-23.html">[ Side Project Log 7/12/23 ]</a></h3>
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<p style="margin-top: 0px;">July 12th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-4-29-23.html">[ Side Project Log 4/29/23 ]</a></h3>
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<p style="margin-top: 0px;">April 29th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-3-27-23.html">[ Side Project Log 3/27/23 ]</a></h3>
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<p style="margin-top: 0px;">March 27th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/side-project-3-20-23.html">[ Side Project Log 3/20/23 ]</a></h3>
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<p style="margin-top: 0px;">March 20th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/spring-break-2023.html">[ Spring Break 2023 ]</a></h3>
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<p style="margin-top: 0px;">January 20th, 2023</p>
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<h3 style="margin-bottom: 0px;"><a href="./blogs/doing-c-assignments-in-csharp.html">[ Doing C assignments in C# ]</a></h3>
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<p style="margin-top: 0px;">March 18th, 2022</p>
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</div>
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@ -74,4 +74,39 @@
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<td>Texas Union Underground</td>
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</tr>
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</table>
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<!--
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<h2>In the news</h2>
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<p>
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<a href="https://www.kxan.com/video/kxan-viewers-react-to-highland-lanes-closing/9431847/">[ Video of a strike I threw on the news ]</a>
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</p>
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<p>
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<a href="https://www.kxan.com/video/highland-lanes-will-remain-on-burnet-a-little-longer-than-anticipated/9888905/">[ Same bowling video played again! ]</a>
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</p>
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<p>
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<a href="https://www.youtube.com/watch?v=v9qSFdAjmFQ">[ Coverage of transit rally I spoke at (the news cut my speaking part) ]</a>
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</p>
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-->
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<h2>PGP Key</h2>
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<div style="background-color: #1E1E2E; color: #FFFFFF; padding: 10px; overflow: scroll;">
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<p>
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-----BEGIN PGP PUBLIC KEY BLOCK-----
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<br>
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mDMEZ8J/bhYJKwYBBAHaRw8BAQdAGaG9EehhWlKQQXP42W3Uvv6qkyo1NPzYASkR
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vx4m0Y20K05pY2hvbGFzIE9ybG93c2t5IDxuaWNrb3Jsb3dAbmlja29ybG93LmNv
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bT6IkwQTFgoAOxYhBPFsfG56tNFpdTscKKnzukwKp6cLBQJnwn9uAhsDBQsJCAcC
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AiICBhUKCQgLAgQWAgMBAh4HAheAAAoJEKnzukwKp6cLrHYBAOFT953mpAY3yVE9
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tvcA4sdpkmWw/OIrsd24vW74ykWyAQCvtqwLfsVvZxXRzvWOau3P+IrnYP5UGXJj
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snieP3vXDLg4BGfCf24SCisGAQQBl1UBBQEBB0BOiEhnLnikOTCENkGfgmIRdswh
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0qzryW9PMq5BN24BaAMBCAeIeAQYFgoAIBYhBPFsfG56tNFpdTscKKnzukwKp6cL
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BQJnwn9uAhsMAAoJEKnzukwKp6cLyF8A/i46c9EPhzwlvkgLRJzsuHAoWX9DcCLR
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JH39kfjZ5ecTAP4kQ+aw/oD3lhaDiIrEo1MobVDzoCM5wV39ci6klBsVCw==
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=p51G
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<br>
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-----END PGP PUBLIC KEY BLOCK-----
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</p>
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</div>
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</div>
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@ -16,7 +16,8 @@
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<p>
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I'm a computer science student at the University of Texas at Austin. I'm particularly
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interested in infrastructure, distributed systems, and systems programming.
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interested in computer architecture and systems programming, with a focus on
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performance-critical applications.
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</p>
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<p>
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@ -27,6 +28,10 @@
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<p>
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Outside of computers, I enjoy biking and weightlifting. I'm also a public transit enthusiast
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and I take pictures of trains that I see, especially rare or special ones.
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and I take pictures of trains that I see and train stations that I visit. I also like to
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play poker. I'm not particularly good except for
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<a href="https://www.linkedin.com/posts/susquehanna-international-group_after-two-full-days-of-competition-in-the-ugcPost-7227726250465730560-0f8k">
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one tournament run I had, where I came in 5th out of roughly 150.
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</a>
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</p>
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</div>
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<div>
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<h1 style="margin-bottom: 0px;">Projects</h1>
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<div>
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<h2>Project Warminster: yayacemu, yacemu, yagbemu</h2>
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<p><i>C, C++, and SystemVerilog</i></p>
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<p>
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<a href="https://git.nickorlow.com/nickorlow/yacemu">[ Git Repo: yacemu ]</a>
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<a href="https://git.nickorlow.com/nickorlow/yayacemu">[ Git Repo: yayacemu ]</a>
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</p>
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<p>
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<a href="https://files.nickorlow.com/videos/warminster/yayacemu_tetris.mp4">[ Tetris Demo: yayacemu ]</a>
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<a href="https://files.nickorlow.com/videos/warminster/yayacemu_bowling.mp4">[ Bowling Demo: yayacemu ]</a>
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</p>
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<p>
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Project Warminster is a collection of 3 subprojects:
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<ul>
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<li><b>yacemu (Yet Another Chip Eight Emulator):</b> A CHIP-8 emulator written in C</li>
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<li><b>yayacemu (Yet Another Yet Another Chip Eight Emulator):</b> A CHIP-8 hardware implementation in SystemVerilog (that works on real hardware)</li>
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<li><b>yagbemu (Yet Another Gameboy Emulator):</b> A Gameboy hardware implementation in SystemVerilog (WIP, not public yet)</li>
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</ul>
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This project taught me a lot of practical hands-on things about Computer Architecture. Designing the hardware driver for the ST7920 LED display was
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the most challenging part. Debugging hardware adds a lot of complications, you don't get breakpoints or a nice debugger like gdb. Additionally,
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interference, faulty wires, timing, and debouncing all throw wrenches into the mix.
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</p>
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</div>
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<div>
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<h2>Nick Web Services (NWS)</h2>
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<p><i>C#, Kubernetes, Rancher, and HAProxy</i></p>
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<p>
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Nick Web Services is a cloud infrastructure provider service that I created and run.
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It allows people to deploy containerized versions of their web apps across our multiple
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servers. It provides geo-distributed high availability by default with no extra configuration
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points of presence. It provides geo-distributed high availability by default with no extra configuration
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needed from users hosting their webapp with us.
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</p>
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<p>
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Hardware-wise we use old Dell PowerEdge servers running Proxmox. We then have VMs running
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in Proxmox that run Kubernetes clusters. We have 4 clusters currently: Austin, Hill Country,
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Schuylkill, and Philadelphia. The deployments are managed through GitOps with Rancher Fleet.
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in Proxmox that run Kubernetes clusters. At the peak I had 4 points of presence: Austin, Hill Country,
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Schuylkill, and Philadelphia. The deployments are managed through GitOps with Rancher Fleet. Unfortunately,
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we only have one point of presence at the moment due to a number of factors, however that should
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change this fall.
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</p>
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<p>
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NWS maintained 100% uptime for the period from 11/8/2023 to 11/28/2024 (over a year!).
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</p>
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<p>
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The website you're reading this on right now is hosted on NWS!
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</p>
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</div>
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<div>
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<h2>Anthracite Web Server</h2>
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<p><i>C++ & Python</i></p>
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<p><i>C++, CMake, and Python</i></p>
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<a href="https://git.nickorlow.com/nickorlow/anthracite">[ Git Repo ]</a>
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<p>
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Anthracite is a simple web server written in C++. It currently supports HTTP/1.0 and HTTP/1.1.
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The benchmarking tools for Anthracite are written in Python. Anthracite is optimized for performance
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and rivals the performance of NGINX & Apache in our testing. It uses a thread-per-connection
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architecture, allowing it to process many requests in paralell. Additionally, it caches all
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files that it serves in memory to ensure that added latency from disk reads do not slow down requests.
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Through writing Anthracite, I have learned to use different C++ profilers as well as some general
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optimization techniques for C++.
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Anthracite is a web server written for Linux in C++. It currently supports both HTTP/1.0 and HTTP/1.1 and TLS.
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It heavily uses a dependency injection design pattern to allow for a high degree of customization.
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It currently uses an event-loop threading model and uses the epoll() system call to efficiently detect
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events. Previously, it used a connection per thread model.
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</p>
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<p>
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Anthracite's HTTP request parser is able to parse roughly 27 million requests per second on my laptop, compared
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to Boost's HTTP parser which parsed roughly 1 million per second. I'd imagine a lot of this is due to missing
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functionality in Anthracite's HTTP parser, but it's enough to get by! While I haven't run extensive end-to-end
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tests on the newest version of Anthracite, in the limited tests I've done during development, it's been able to
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handle ~300k RPS on my laptop, a comparable number to NGINX.
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</p>
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<p>
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The website you're reading this on right now is hosted with Anthracite!
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</p>
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</div>
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<div>
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<h2>CavCash</h2>
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<p><i>C#, Kubernetes, SQL Server, and MongoDB</i></p>
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<a href="https://cavcash.com">[ Project Website ]</a>
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<h2>RAZZLE</h2>
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<p><i>C, ASM, and CMake</i></p>
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<a href="https://git.nickorlow.com/nickorlow/razzle">[ Git Repo ]</a>
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<p>
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CavCash was a company that I founded which built a debit-based payment system similar to
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PayPal and Venmo. I assembled a 5 person team and took on a technical role in the company,
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writing most of our backend codebase. Our backend used C#, ASP.NET, Microsoft SQL Server,
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and MongoDB. Our infrastructure changed throughout the lifetime of the company, initially
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it was on Microsoft Azure using Azure App Service. We then pivoted to AWS using Elastic
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Beanstalk. We also ran on Google Cloud Platform using Compute Engine. Finally, we setup our
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own servers in-house and managed our deployments with Kubernetes.
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RAZZLE is a monolithic kernel. Currently, it's very limited and I haven't made a lot of progress on it.
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It's currently single-core but supports preemptive timesharing. It has basic I/O interfaces for ps2,
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serial, and vga. It currently has a very limited in-ram filesystem using a proprietary filesystem.
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I'm currently working on adding an ATA driver so I can have programs run on RAZZLE without including
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them at build-time.
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</p>
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</div>
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<div>
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<h2>Open Source Contributions</h2>
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<p>
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I've made various (minor) open source contributions. I'd say the only one worth anything was the cgroups2 support in
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nginx-ingress.
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</p>
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<p>
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We launched in 2021, with the ability to send money between real banks using the ACH network.
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We ended up processing a few hundred dollars in transaction volume before ultimately shutting
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down due to a lack of funding. The website is now back up and everything works as it did in
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2021, except adding funds from a bank account is not supported.
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<a href="https://github.com/kubernetes/ingress-nginx/pull/9816">[ kubernetes nginx-ingress: cgroups2 configuration support ]</a>
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</p>
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<p>
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<a href="https://github.com/argoproj/argo-cd/pull/13060">[ argo cd: fix styling issue on dashboard ]</a>
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</p>
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<p>
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<a href="https://github.com/endeavouros-team/endeavouros-i3wm-setup/pull/90">[ endeavouros: update default i3 config to work with numpad keys ]</a>
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</p>
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<p>
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<a href="https://github.com/trivago/hamara/pull/15">[ trivago hamara: documentation update ]</a>
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</p>
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</div>
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</div>
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<div>
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<h2>Olney</h2>
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<p><i>Rust, Postgres, Svelte, TypeScript, and OpenAI's API</i></p>
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<a href="https://github.com/nickorlow/olney">[ GitHub Repo ]</a>
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<h2>CavCash</h2>
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<p><i>C#, Kubernetes, SQL Server, and MongoDB</i></p>
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<!--<a href="https://cavcash.com">[ Project Website ]</a>-->
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<p>
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Olney is a job application tracker that aims to be better than using a <a href="https://trello.com">Trello</a> board or a spreadsheet.
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It allows users to create jobs and log custom events such as interviews, assessments, and other communication.
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CavCash was a company that I founded which built a debit-based payment system similar to
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PayPal and Venmo. I assembled a 5 person team and took on a technical role in the company,
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writing most of our backend codebase. Our backend used C#, ASP.NET, Microsoft SQL Server,
|
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and MongoDB. Our infrastructure changed throughout the lifetime of the company, initially
|
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it was on Microsoft Azure using Azure App Service. We then pivoted to AWS using Elastic
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Beanstalk. We also ran on Google Cloud Platform using Compute Engine. Finally, we setup our
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own servers in-house and managed our deployments with Kubernetes.
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</p>
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</div>
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<div>
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<h2>SEPTA Site</h2>
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<p><i>Svelte, TypeScript</i></p>
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<a href="https://github.com/nickorlow/septa-site">[ GitHub Repo ]</a>
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<p>
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SEPTA Site is a website that I created which can get your trip history, SEPTA Key balance,
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and ridership statistics for your SEPTA Key. It utilizes SEPTA's new metro wayfinding instead
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of their current wayfinding. I wrote the project to get a basic introduction to Svelte and
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so that I could try to improve upon the UX of SEPTA's current website and mobile app.
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We launched in 2021, with the ability to send money between real banks using the ACH network.
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We ended up processing a few hundred dollars in transaction volume before ultimately shutting
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down due to a lack of funding. <!--The website is now back up and everything works as it did in
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2021, except adding funds from a bank account is not supported.-->
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</p>
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</div>
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<title>Nicholas Orlowsky</title>
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<link rel="stylesheet" href="/style.css">
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<link rel="icon" type="image/x-icon" href="/favicon.ico">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
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<body>
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<nav>
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<hr/>
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</nav>
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<div style="padding: 10px;">
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{{ body_area }}
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</div>
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<footer>
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<hr />
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<p style="margin-bottom: 0px;">Copyright © Nicholas Orlowsky 2025</p>
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<p style="margin-top: 0px; margin-bottom: 0px;">Hosting provided by <a href="https://nws.nickorlow.com">NWS</a></p>
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<p style="margin-top: 0px;">Powered by <a href="https://git.nickorlow.com/nickorlow/anthracite">Anthracite Web Server</a> 0.3.0</p>
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<p style="margin-top: 0px;">Powered by <a href="https://git.nickorlow.com/nickorlow/anthracite">Anthracite Web Server</a></p>
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</footer>
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</body>
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Loading…
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