The best Hacker News stories from Show from the past day
Latest posts:
Show HN: GitHub Browser Plugin for AI Contribution Blame in Pull Requests
Show HN: Ghidra MCP Server – 110 tools for AI-assisted reverse engineering
Show HN: Ghidra MCP Server – 110 tools for AI-assisted reverse engineering
Show HN: Ghidra MCP Server – 110 tools for AI-assisted reverse engineering
Show HN: Craftplan – I built my wife a production management tool for her bakery
My wife was planning to open a micro-bakery. We looked at production management software and it was all either expensive or way too generic. The actual workflows for a small-batch manufacturer aren't that complex, so I built one and open-sourced it.<p>Craftplan handles recipes (versioned BOMs with cost rollups), inventory (lot traceability, demand forecasting, allergen tracking), orders, production batch planning, and purchasing. Built with Elixir, Ash Framework, Phoenix LiveView, and PostgreSQL.<p>Live demo: <a href="https://craftplan.fly.dev" rel="nofollow">https://craftplan.fly.dev</a> (test@test.com / Aa123123123123)<p>GitHub: <a href="https://github.com/puemos/craftplan" rel="nofollow">https://github.com/puemos/craftplan</a>
Show HN: Craftplan – I built my wife a production management tool for her bakery
My wife was planning to open a micro-bakery. We looked at production management software and it was all either expensive or way too generic. The actual workflows for a small-batch manufacturer aren't that complex, so I built one and open-sourced it.<p>Craftplan handles recipes (versioned BOMs with cost rollups), inventory (lot traceability, demand forecasting, allergen tracking), orders, production batch planning, and purchasing. Built with Elixir, Ash Framework, Phoenix LiveView, and PostgreSQL.<p>Live demo: <a href="https://craftplan.fly.dev" rel="nofollow">https://craftplan.fly.dev</a> (test@test.com / Aa123123123123)<p>GitHub: <a href="https://github.com/puemos/craftplan" rel="nofollow">https://github.com/puemos/craftplan</a>
Show HN: Craftplan – I built my wife a production management tool for her bakery
My wife was planning to open a micro-bakery. We looked at production management software and it was all either expensive or way too generic. The actual workflows for a small-batch manufacturer aren't that complex, so I built one and open-sourced it.<p>Craftplan handles recipes (versioned BOMs with cost rollups), inventory (lot traceability, demand forecasting, allergen tracking), orders, production batch planning, and purchasing. Built with Elixir, Ash Framework, Phoenix LiveView, and PostgreSQL.<p>Live demo: <a href="https://craftplan.fly.dev" rel="nofollow">https://craftplan.fly.dev</a> (test@test.com / Aa123123123123)<p>GitHub: <a href="https://github.com/puemos/craftplan" rel="nofollow">https://github.com/puemos/craftplan</a>
Show HN: Octosphere, a tool to decentralise scientific publishing
Hey HN! I went to an ATProto meetup last week, and as a burnt-out semi-academic who hates academic publishing, I thought there might be a cool opportunity to build on Octopus (<a href="https://www.octopus.ac/" rel="nofollow">https://www.octopus.ac/</a>), so I got a bit excited over the weekend and built Octosphere.<p>Hopefully some of you find it interesting! Blog post here: <a href="https://andreasthinks.me/posts/octosphere/octosphere.html" rel="nofollow">https://andreasthinks.me/posts/octosphere/octosphere.html</a>
Show HN: Octosphere, a tool to decentralise scientific publishing
Hey HN! I went to an ATProto meetup last week, and as a burnt-out semi-academic who hates academic publishing, I thought there might be a cool opportunity to build on Octopus (<a href="https://www.octopus.ac/" rel="nofollow">https://www.octopus.ac/</a>), so I got a bit excited over the weekend and built Octosphere.<p>Hopefully some of you find it interesting! Blog post here: <a href="https://andreasthinks.me/posts/octosphere/octosphere.html" rel="nofollow">https://andreasthinks.me/posts/octosphere/octosphere.html</a>
Show HN: difi – A Git diff TUI with Neovim integration (written in Go)
Show HN: Sandboxing untrusted code using WebAssembly
Hi everyone,<p>I built a runtime to isolate untrusted code using wasm sandboxes.<p>Basically, it protects your host system from problems that untrusted code can cause. We’ve had a great discussion about sandboxing in Python lately that elaborates a bit more on the problem [1]. In TypeScript, wasm integration is even more natural thanks to the close proximity between both ecosystems.<p>The core is built in Rust. On top of that, I use WASI 0.2 via wasmtime and the component model, along with custom SDKs that keep things as idiomatic as possible.<p>For example, in Python we have a simple decorator:<p><pre><code> from capsule import task
@task(
name="analyze_data",
compute="MEDIUM",
ram="512mb",
allowed_files=["./authorized-folder/"],
timeout="30s",
max_retries=1
)
def analyze_data(dataset: list) -> dict:
"""Process data in an isolated, resource-controlled environment."""
# Your code runs safely in a Wasm sandbox
return {"processed": len(dataset), "status": "complete"}
</code></pre>
And in TypeScript we have a wrapper:<p><pre><code> import { task } from "@capsule-run/sdk"
export const analyze = task({
name: "analyzeData",
compute: "MEDIUM",
ram: "512mb",
allowedFiles: ["./authorized-folder/"],
timeout: 30000,
maxRetries: 1
}, (dataset: number[]) => {
return {processed: dataset.length, status: "complete"}
});
</code></pre>
You can set CPU (with compute), memory, filesystem access, and retries to keep precise control over your tasks.<p>It's still quite early, but I'd love feedback. I’ll be around to answer questions.<p>GitHub: <a href="https://github.com/mavdol/capsule" rel="nofollow">https://github.com/mavdol/capsule</a><p>[1] <a href="https://news.ycombinator.com/item?id=46500510">https://news.ycombinator.com/item?id=46500510</a>
Show HN: Sandboxing untrusted code using WebAssembly
Hi everyone,<p>I built a runtime to isolate untrusted code using wasm sandboxes.<p>Basically, it protects your host system from problems that untrusted code can cause. We’ve had a great discussion about sandboxing in Python lately that elaborates a bit more on the problem [1]. In TypeScript, wasm integration is even more natural thanks to the close proximity between both ecosystems.<p>The core is built in Rust. On top of that, I use WASI 0.2 via wasmtime and the component model, along with custom SDKs that keep things as idiomatic as possible.<p>For example, in Python we have a simple decorator:<p><pre><code> from capsule import task
@task(
name="analyze_data",
compute="MEDIUM",
ram="512mb",
allowed_files=["./authorized-folder/"],
timeout="30s",
max_retries=1
)
def analyze_data(dataset: list) -> dict:
"""Process data in an isolated, resource-controlled environment."""
# Your code runs safely in a Wasm sandbox
return {"processed": len(dataset), "status": "complete"}
</code></pre>
And in TypeScript we have a wrapper:<p><pre><code> import { task } from "@capsule-run/sdk"
export const analyze = task({
name: "analyzeData",
compute: "MEDIUM",
ram: "512mb",
allowedFiles: ["./authorized-folder/"],
timeout: 30000,
maxRetries: 1
}, (dataset: number[]) => {
return {processed: dataset.length, status: "complete"}
});
</code></pre>
You can set CPU (with compute), memory, filesystem access, and retries to keep precise control over your tasks.<p>It's still quite early, but I'd love feedback. I’ll be around to answer questions.<p>GitHub: <a href="https://github.com/mavdol/capsule" rel="nofollow">https://github.com/mavdol/capsule</a><p>[1] <a href="https://news.ycombinator.com/item?id=46500510">https://news.ycombinator.com/item?id=46500510</a>
Show HN: Minikv – Distributed key-value and object store in Rust (Raft, S3 API)
Hi HN,<p>I'm Emilie, I have a literature background (which explains the well-written documentation!) and I've been learning Rust and distributed systems by building minikv over the past few months.
It recently got featured in Programmez! magazine: <a href="https://www.programmez.com/actualites/minikv-un-key-value-store-distribue-en-rust-construit-en-public-38861" rel="nofollow">https://www.programmez.com/actualites/minikv-un-key-value-st...</a><p>minikv is an open-source, distributed storage engine built for learning, experimentation, and self-hosted setups.
It combines a strongly-consistent key-value database (Raft), S3-compatible object storage, and basic multi-tenancy.<p>Features/highlights:<p>- Raft consensus with automatic failover and sharding
- S3-compatible HTTP API (plus REST/gRPC APIs)
- Pluggable storage backends: in-memory, RocksDB, Sled
- Multi-tenant: per-tenant namespaces, role-based access, quotas, and audit
- Metrics (Prometheus), TLS, JWT-based API keys
- Easy to deploy (single binary, works with Docker/Kubernetes)<p>Quick demo (single node):<p>```bash
git clone <a href="https://github.com/whispem/minikv.git" rel="nofollow">https://github.com/whispem/minikv.git</a>
cd minikv
cargo run --release -- --config config.example.toml
curl localhost:8080/health/ready<p># S3 upload + read
curl -X PUT localhost:8080/s3/mybucket/hello -d "hi HN"
curl localhost:8080/s3/mybucket/hello<p>Docs, cluster setup, and architecture details are in the repo.
I’d love to hear feedback, questions, ideas, or your stories running distributed infra in Rust!<p>Repo: <a href="https://github.com/whispem/minikv" rel="nofollow">https://github.com/whispem/minikv</a>
Crate: <a href="https://crates.io/crates/minikv" rel="nofollow">https://crates.io/crates/minikv</a>
Show HN: Safe-now.live – Ultra-light emergency info site (<10KB)
After reading "During Helene, I Just Wanted a Plain Text Website" on Sparkbox (<a href="https://news.ycombinator.com/item?id=46494734">https://news.ycombinator.com/item?id=46494734</a>) , I built safe-now.live – a text-first emergency info site for USA and Canada. No JavaScript, no images, under 10KB. Pulls live FEMA disasters, NWS alerts, weather, and local resources. This is my first live website ever so looking for critical feedback on the website. Please feel free to look around.<p><a href="https://safe-now.live" rel="nofollow">https://safe-now.live</a>
Show HN: Safe-now.live – Ultra-light emergency info site (<10KB)
After reading "During Helene, I Just Wanted a Plain Text Website" on Sparkbox (<a href="https://news.ycombinator.com/item?id=46494734">https://news.ycombinator.com/item?id=46494734</a>) , I built safe-now.live – a text-first emergency info site for USA and Canada. No JavaScript, no images, under 10KB. Pulls live FEMA disasters, NWS alerts, weather, and local resources. This is my first live website ever so looking for critical feedback on the website. Please feel free to look around.<p><a href="https://safe-now.live" rel="nofollow">https://safe-now.live</a>
Show HN: Apate API mocking/prototyping server and Rust unit test library
Show HN: PolliticalScience – Anonymous daily polls with 24-hour windows
I have been building a Blazor WASM enterprise app for a few years now. I wanted a break from it and had an idea for a side project that had been in the back of my mind for a few years. A daily political poll where anyone can participate and privacy is a product, not a checkbox.<p>This is how it works. One question per day about current events. Agree or Disagree. Each poll runs for 24 hours (midnight to midnight ET) and then close permanently. You do not need an account to vote. The main idea is to capture sentiment at a specific point in time, before the news cycle moves on and people's opinions drift.<p>For this app, I tried to make privacy the point and not just a feature. I originally used a browser fingerprint for anonymous voting, but recently changed it to a simple first-party functional cookie. It uses a random string and the PollId to see if your browser had voted before. The server stores a hash of the cookie to check for duplicates while the poll is live, then deletes all hashes when the poll closes. Only the aggregate counts remain. The browser fingerprint had way too many device collisions where it would show someone they voted even though they had not (an odd thing to see when you go to a poll). The HttpOnly cookie is also available during prerender, which helped eliminate loading flashes I was getting.<p>This app was built with .NET 10 Blazor with a hybrid Static SSR + Interactive Server. The static pages (about, privacy, terms, etc...) don't need SignalR connections. The interactive ones (voting, archive, results, etc...) do. Mixing these modes was a new experience for me and ended up being pretty tricky. I ended up with data-enhance-nav="false" on most links to prevent weird state issues.<p>The two biggest things I learned during building this app was how to prevent weird blazor flashes and duplicate queries during pre-render, hydration, and state changes. I used the _ready pattern from preventing the hydration flashes (gate rendering until data is loaded by setting the flag before the first await). Preventing the duplicate queries was possible by using a 2-second static caching during prerender to hydration.<p>This isn't scientific polling and these are obviously not representative samples. The 24-hour window means smaller numbers than longer surveys and it's only a survey of those who choose to participate. The Agree/Disagree binary choice basically flattens nuance (like I sort of agree), but I am okay with all of this as I think a lot of people feel they never get to participate in these sorts of polls.<p>I recently also added discussions with AI moderation (Claude Haiku 4.5 as a "first-pass" filter which flags things clearly out of the community guidelines for human review), a reaction system where counts stay hidden until the discussion closes, and news coverage from across the political spectrum shown after you vote for more perspective on the topic.<p>Thanks for checking it out and happy to dig into any of the Blazor SSR patterns or anything else that sounded interesting. I know Blazor is less frequently used and especially for a public facing website. It did have its challenges, but so far, it has been a blast to work with overall.
Show HN: Adboost – A browser extension that adds ads to every webpage
Show HN: Adboost – A browser extension that adds ads to every webpage
Show HN: Wikipedia as a doomscrollable social media feed