nebari
unsafe-code-guidelines
nebari | unsafe-code-guidelines | |
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11 | 74 | |
260 | 644 | |
2.3% | 1.9% | |
4.6 | 6.9 | |
7 months ago | 2 months ago | |
Rust | ||
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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nebari
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Some key-value storage engines in Rust
Or, you could also look at Nebari, which underlies BonsaiDB https://github.com/khonsulabs/nebari/
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Are there a demand for management system of embedded storage like RocksDB? I plan to build one in Rust as the language becoming a core of many popular databases but wonder if there’s a demand. Can’t find any similar project even in other languages.
There is Nebari which is the KV part of BonsaiDB I've used both successfully (and that is currently in production)
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redb 0.4.0: 2x faster commits with 1PC+C instead of 2PC
This looks like it could have been inspired by BonsaiDB's recent problems. I think the authors are now trying to achieve something similar to your project with a new storage layer called Sediment (which will become a part of Nebari if successful).
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File read performance comparison
I ran my benchmark suite on my 2017 i7 MacBook Pro (Filevault enabled), and I was able to perform a random "get" operation out of a 1 million record dataset in an average of 18us (microseconds).
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Announcing BonsaiDb v0.2.0: Custom Primary Keys, LZ4 Compression
I haven't spent much time documenting the low-level structures outside of the code itself.
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Announcing BonsaiDb v0.1.0: A Rust NoSQL database that grows with you
Nebari, the underlying storage layer, also has its own coverage report.
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Benchmarking relational data in BonsaiDb, a Rust-native NoSQL database
Quite well, but Sled doesn't support the same feature set. I've benchmarked our low-level storage layer against Sled in its own repostiory: Nebari Benchmark README. There are two links two criterion reports on that page.
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Are there any big projects written in Rust without any use of unsafe code?
I maintain several large codebases that have #![forbid(unsafe)] annotations, which prevent unsafe code from being written in those codebases directly. BonsaiDb clocks in at just shy of 30k LOC, and depends on Nebari which is another 12k LOC. Those two crates make up the bulk of a networked database implementation.
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What is the best key-value store for Rust 2021
I have, and there's a set of microbenchmarks in the repository. There are two links to reports on that page -- one that's executed on GitHub Actions, which can have quite widely varying performance, and one that's executed on a "dedicated" VPS instance from Scaleway -- exact specs are on that page. I've kicked off another run on that VPS, since it hasn't been run since October. It takes a while to run, so if it still says October, try hitting refresh a little later.
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What's everyone working on this week (40/2021)?
I replaced Sled in BonsaiDb with a new storage layer I wrote: Nebari. I just wrote a post this morning recalling my struggles over the last month to feel comfortable sharing this project outside of a smaller group of people.
unsafe-code-guidelines
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Passing nothing is surprisingly difficult
Useful context on the Rust side is this issue [1]. It sounds like some of the author's concerns are addressed already.
[1]: https://github.com/rust-lang/unsafe-code-guidelines/issues/4...
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Blog Post: Non-Send Futures When?
Is this captured by one of the known soundness conflicts? If not then should consider adding it to the list.
- Are crates like vcell and volatile cell still unsound?
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Question: Are there things for Unsafe Rust learn from Zig?
There are some competing proposals for different memory models. Stacked borrows is the current proposal, but there are more work in the approproate WG.
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Let's thank who have helped us in the Rust Community together!
Thank you /u/RalfJung for bringing formal methods to Rust, both through models like Stacked Borrows, by developing miri, and by working on unsafe-code-guidelines which aims to specify exactly what is and isn't allowed in unsafe code (surprisingly, it's an open question as 2023!)
- Questions about ownership rule
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Noob Here: Why doesn't this work?
You could imagine some way to make this safe for example automatically convert &'short &'long mut T to &'short &'short T, but it's non-trivial to prove they are safe at all, not to mention ensuring this is correctly implemented in the compiler. If you're interested there's also a discussion on whether the opposite (& & T to & &mut T) is sound here.
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When Zig is safer and faster than (unsafe) Rust
Agreed! MIRI is so good, it still feels like magic to me. It also comforts me that the Rust team takes improving unsafe semantics seriously, with the past Unsafe Code Guidelines WG and today's operational semantics team (t-opsem).
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Safety and Soundness in Rust
I think there are some aspects of this rule that are still undecided. See for example:
- https://github.com/rust-lang/unsafe-code-guidelines/issues/8...
- https://github.com/rust-lang/miri/issues/2732
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I wanna be a crab.
C is much better specified than unsafe Rust. Some things are just not worked out yet in Rust. This may sometimes even bite very experienced devs, such as this issue with Box's aliasing semantics, which tripped up the author of left-right.
What are some alternatives?
glow - GL on Whatever: a set of bindings to run GL anywhere and avoid target-specific code
tokio - A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...
forbidden - An auth system/library for Rust applications
rust - Empowering everyone to build reliable and efficient software.
sled - the champagne of beta embedded databases
rfcs - RFCs for changes to Rust
redb - An embedded key-value database in pure Rust
x11rb - X11 bindings for the rust programming language, similar to xcb being the X11 C bindings
PickleDB - PickleDB-rs is a lightweight and simple key-value store. It is a Rust version for Python's PickleDB
bevy - A refreshingly simple data-driven game engine built in Rust
bonsaidb - A developer-friendly document database that grows with you, written in Rust
miri - An interpreter for Rust's mid-level intermediate representation