Saturday, August 31, 2024
Friday, August 30, 2024
Show HN: Website with coding puzzles from job interviews https://ift.tt/19FlDGW
Show HN: Website with coding puzzles from job interviews Hi Friends! As I run another site with more general programming exercises for years - I always felt they are different from puzzles and test projects proposed at job interviews. So recently I started this new place and am slowly adding problems here. Of course the number of such challenges I encountered in interviews myself is quite limited. So if you may recollect something of the kind which could be converted to a puzzle - please, kindly share it to me (e.g. with "rodiongork" at gmail). Puzzles of algorithmic nature or system-oriented and language-specific - are all welcome. Currently I'm working to add a few postgresql exercises and executor for them. https://ca4pro.com August 30, 2024 at 06:27PM
Thursday, August 29, 2024
Show HN: Open-source alternative to Loom that only requires S3 https://ift.tt/QBDd7Es
Show HN: Open-source alternative to Loom that only requires S3 https://ift.tt/i0G4ZaN August 25, 2024 at 06:10PM
Wednesday, August 28, 2024
Show HN: Warehouse OpenAI requests to your own database https://ift.tt/9CwBm2e
Show HN: Warehouse OpenAI requests to your own database Today we’re launching Velvet, an AI gateway for warehousing OpenAI and Anthropic requests to your PostgreSQL instance. We originally built an AI SQL editor, but realized that customers were using it to monitor their AI requests in production. We had already built an AI request warehousing tool internally to debug our SQL editor and gave some customers access. A few days into testing this idea, our pilot customer launched [1] and we began warehousing 1,500 requests per second. We worked closely with their engineering team in the following weeks, completely re-architecting Velvet for scale and additional features (such as Batch support). Along the way, other companies began seeking out Velvet to get visibility into their own LLM requests. We’re launching our AI gateway as a self-serve product today, but our pilot customers are already warehousing over 3 million requests per week - so the system is stable and performant. What makes Velvet unique is that you own the data in your own database. Also, we’re the first proxy that gives visibility into OpenAI batch calls - so you can observe and monitor async calls that save you money. Some technical notes: - Supports OpenAI and Anthropic endpoints - Data is formatted as JSON and logged to your own PostgreSQL instance (can add support for other databases for paying customers). - You can include queryable metadata in the header, such as user ID, org ID, model ID, and version ID. - Built on Cloudflare workers, which keeps latency minimal (using our caching feature will reduce latency overall) - Built for security + starting process of SOC II soon Why warehouse your requests? - Understand where money is spent. Use custom headers to calculate the cost per customer, model, or service. - Download real request/response data, so you can evaluate new models (e.g., re-running requests with a cheaper mini model) - Monitor time to completion of batch jobs. (e.g., OpenAI says 24 hours, but our customers average 3-4 hours) - Export a subset of example requests for fine-tuning It’s just a 2 line code change to get started. Try a sandbox demoing the logging proxy here: https://ift.tt/MyvalIx More details in our docs https://ift.tt/KuyHtqP [1] https://ift.tt/YVrL4Dj https://ift.tt/7hqzYng August 28, 2024 at 08:51PM
Tuesday, August 27, 2024
Monday, August 26, 2024
Show HN: Fix or Skip? https://ift.tt/Y8SofpD
Show HN: Fix or Skip? A small tool designed to help you determine whether implementing a fix for a slow process is worthwhile or if skipping the fix is more time-efficient. Inspired by a LinkedIn post made by Raymond Xu, related to https://xkcd.com/1205/ . https://fixorskip.com August 26, 2024 at 11:50PM
Show HN: Find out if your area could be affected by a nuclear event https://ift.tt/65ZNdFi
Show HN: Find out if your area could be affected by a nuclear event Hey, HN! I feel like lately a lot more people are trying to keep up with geopolitics. So we've collected data from different sources and put together this map with potential targets in nuclear warfare. Please let me know if it helps you and if you have other suggestions. Thanks a lot! https://ift.tt/rfkolUP August 26, 2024 at 10:38PM
Sunday, August 25, 2024
Show HN: Aos – Alias on Steroids https://ift.tt/8GUZtwd
Show HN: Aos – Alias on Steroids A simple golang cli to run complex command lines in a simpler way https://ift.tt/1ehmnxt August 25, 2024 at 11:24PM
Saturday, August 24, 2024
Show HN: High school robotics code/CAD/design binder release https://ift.tt/TlA8rgP
Show HN: High school robotics code/CAD/design binder release Hello HN! My name is Patrick, and I am a junior at my High School’s FRC robotics team FRC 341 “Miss Daisy” (yes named after the movie). Every year, during the first weekend in January, a new robotics game is released (no it’s not battlebots). The game could be about launching balls into a goal, climbing monkeybars, or placing cubes on a see-saw. This year we were challenged to build a robot that could shoot orange foam donuts into a goal about 6 feet in the air. Here is a yt video with the game animation https://www.youtube.com/watch?v=9keeDyFxzY4&t . After we received the game we then had six weeks to design, build, program, and field a robot capable of playing the game. And we did pretty well this year! I have attached a ChiefDelphi thread (robotics forum) where we have released our season materials. This being our CAD (3D model of robot), code, and design binder. I encourage you to take a look and leave any questions that you may have. Thanks a lot! https://ift.tt/epkjISN August 24, 2024 at 11:40PM
Friday, August 23, 2024
Thursday, August 22, 2024
Wednesday, August 21, 2024
Show HN: Permify 1.0 – Open-source fine-grained authorization service https://ift.tt/X6S5j3v
Show HN: Permify 1.0 – Open-source fine-grained authorization service https://ift.tt/ShGqtiv August 21, 2024 at 07:58PM
Tuesday, August 20, 2024
Monday, August 19, 2024
Sunday, August 18, 2024
Show HN: Wd-40, a static webserver with automatic hot-reloads https://ift.tt/b9YxGfN
Show HN: Wd-40, a static webserver with automatic hot-reloads It works by injecting a websocket script which listens for file changes. The filechanges are detected using the go fsnotify package, which in turn uses the different OS's equivalent to inotify. I basically got bored with alt-tabbing and refresing when developing 'vanilla-js'. The hot-reload in the modern frameworks are very nice, so figured I'd recreate it. https://ift.tt/xhcXPjs August 18, 2024 at 10:24PM
Saturday, August 17, 2024
Show HN: V2 of maestro-CLI, a command-line music player https://ift.tt/eJ4pGDQ
Show HN: V2 of maestro-CLI, a command-line music player Visualization directly in the terminal, streaming, clips, tags, and more! https://ift.tt/b9MXPQE August 17, 2024 at 09:48PM
Friday, August 16, 2024
Thursday, August 15, 2024
Show HN: Printing Chess Boards in a Terminal https://ift.tt/14HfLPb
Show HN: Printing Chess Boards in a Terminal I'm doing some fun chess-related programing during my sabbatical, and taking the opportunity to dive down rabbit holes I'd avoid for in a work setting. Found out interesting stuff from old ANSI DEC escape sequences to sixel graphics that are useful today. https://ift.tt/xentolg August 15, 2024 at 11:13PM
Wednesday, August 14, 2024
Show HN: SlateDB – An embedded storage engine built on object storage https://ift.tt/XGsPbE1
Show HN: SlateDB – An embedded storage engine built on object storage SlateDB is an embedded storage engine built as a log-structured merge-tree. Unlike traditional LSM-tree storage engines, SlateDB writes data to object storage (S3, GCS, ABS, MinIO, Tigris, and so on). Leveraging object storage allows SlateDB to provide bottomless storage capacity, high durability, and easy replication. The trade-off is that object storage has a higher latency and higher API cost than local disk. To mitigate high write API costs (PUTs), SlateDB batches writes. Rather than writing every put() call to object storage, MemTables are flushed periodically to object storage as a string-sorted table (SST). The flush interval is configurable. To mitigate write latency, SlateDB provides an async put method. Clients that prefer strong durability can await on put until the MemTable is flushed to object storage (trading latency for durability). Clients that prefer lower latency can simply ignore the future returned by put. To mitigate read latency and read API costs (GETs), SlateDB will use standard LSM-tree caching techniques: in-memory block caches, compression, bloom filters, and local SST disk caches. https://ift.tt/cGFZO4X August 14, 2024 at 11:17PM
Tuesday, August 13, 2024
Show HN: AI Bartender in a Virtual Bar https://ift.tt/PMsk31V
Show HN: AI Bartender in a Virtual Bar Note: The avatar will talk to you, so make sure you check your volume! Hello HN! I've seen a bunch of AI character type stuff online, but all of them were boring chat interfaces. I thought it would be more fun to give the characters an avatar and a 3d environment to interact with. The stack I'm using is Claude 3.5 for the LLM, OpenAI TTS, Stable Diffusion for generating drinks, and three.js for rendering. I exposed the prompt I'm using so people can play around with it by clicking the robot icon. If people find it interesting, I might add more environments, character customization options, etc. Hope you enjoy and let me know your thoughts/questions in the comments! If you want to know more, follow me on Twitter or join the Discord! https://ift.tt/kcgOv2L https://x.com/neelmango https://ift.tt/B6Rgety August 13, 2024 at 09:28PM
Monday, August 12, 2024
Sunday, August 11, 2024
Show HN: SuperRocola.com – Collaborative DJ Platform for Real-Time Music Sharing https://ift.tt/utwVRqx
Show HN: SuperRocola.com – Collaborative DJ Platform for Real-Time Music Sharing Hi!, I've built Super Rocola, a web app that turns everyone into a DJ. Tech Stack: Built with SvelteKit, Node.Js, WebSockets and MongoDB Key Features: - Free from any kind of sign up / subscription - Create instant music sessions with a unique QR code - Integrates with YouTube and SoundCloud for vast music library - Real-time collaborative playlist management Problem It Solves: Eliminates the "aux cord fight" at parties and gatherings. Everyone can contribute to the playlist democratically. How It's Different: Unlike other music sharing apps, Super Rocola focuses on real-time collaboration and social interaction around music selection, whithout requiring to have an active subscription to any service. Future plans: - I would like to integrate more platforms (Apple music, Spotify, Deezer) I'd love to get feedback from the HN community on the concept, implementation, and any ideas for improvement. You can try it out at superrocola.com. Looking forward to your thoughts and suggestions! https://ift.tt/m69CedV August 11, 2024 at 07:55PM
Saturday, August 10, 2024
Show HN: Midsommer" or a way to create self-organizing maps in JavaScript https://ift.tt/NdnVr60
Show HN: Midsommer" or a way to create self-organizing maps in JavaScript I've been obsessed with self-organizing maps (or Kohonen maps) for a few years now, and I made a library that implements a bare-bones SOM algorithm in JavaScript. A SOM is basically a kinda-old school—but effective—way to do dimensionality reduction and clustering. Midsommer, my library, also comes with a Svelte component to visualize the resulting SOM, and it uses a force-directed graph to display the underlying shape of the map (cosine similarity between adjacent neurons informs the edge weights, basically). You can see the code here, as well as a couple examples, including one that represents the ~300-odd books I've read since the start of the pandemic. I'm really curious what people think. https://ift.tt/ogl9dt3 August 10, 2024 at 10:50PM
Friday, August 9, 2024
Thursday, August 8, 2024
Show HN: The First Non-Smart AI Pendant (NotFriend) https://ift.tt/YxubFKH
Show HN: The First Non-Smart AI Pendant (NotFriend) https://notfriend.org/ August 8, 2024 at 11:29PM
Show HN: One status page to rule them all (aggregating 3k status pages) https://ift.tt/D7uEjWY
Show HN: One status page to rule them all (aggregating 3k status pages) I recently got tired of subscribing to dozens of status pages (Cloudflare, Vercel, Twilio, GitHub, OpenAI) just to stay ahead of the outages that seem to happen almost every week. So I decided to build https://ift.tt/PfIkM0U - essentially it's an aggregator that crawls 3,000 status pages every minute, so I can see the status of all services and infrastructure in one central place. I also added the capability to create a custom dashboard so that you can monitor specifically the services that you use. I built StatusSight using Next.js, with the frontend being deployed to Vercel, and the status page monitor deployed to Hetzner with Coolify. Let me know your thoughts! https://statussight.com August 8, 2024 at 09:11PM
Wednesday, August 7, 2024
Tuesday, August 6, 2024
Monday, August 5, 2024
Show HN: Run Mutahunter.ai LLM powered software testing on your code in browser https://ift.tt/la93Ycr
Show HN: Run Mutahunter.ai LLM powered software testing on your code in browser https://ift.tt/zFH4cmU August 5, 2024 at 11:10PM
Sunday, August 4, 2024
Saturday, August 3, 2024
Show HN: Plain Vanilla – a tutorial website for vanilla web development https://ift.tt/M6uBVEc
Show HN: Plain Vanilla – a tutorial website for vanilla web development This site explains how to do web development without any tools or frameworks, relying only on the browser and web standards. I made it because I couldn’t find a single place online that put together all the right information in the way that I liked. The site itself is of course also vanilla and open sourced on github. https://ift.tt/buiFhnr August 3, 2024 at 09:15PM
Friday, August 2, 2024
Thursday, August 1, 2024
Show HN: Trayce – Network tab for your local Docker containers https://ift.tt/QLg04yo
Show HN: Trayce – Network tab for your local Docker containers Trayce is an open source desktop application which monitors HTTP(S) traffic to Docker containers on your machine. It uses eBPF to achieve automatic instrumentation and sniffing of TLS-encrypted traffic. As a backend developer I wanted something which was similar to Wireshark or the Chrome network tab, but which intercepted requests & responses to my containers for debugging in a local dev environment. Wireshark is a great tool but it seems more geared towards lower level networking tasks. When I'm developing REST APIs I dont care about packets, checksums, bit flags etc. I'm only concerned with HTTP requests and their responses. I also didn't want to have to configure a pre master key to intercept TLS, I wanted it to work out-of-the-box. Trayce is in beta phase so feedback is very welcome, bug reports too. The frontend GUI is written in Python with the QT framework. The TrayceAgent which is what does the intercepting of traffic is written in Go and eBPF. https://trayce.dev July 30, 2024 at 10:58PM
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