awint
sled
awint | sled | |
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2 | 37 | |
10 | 7,798 | |
- | - | |
8.8 | 1.8 | |
3 months ago | 6 days ago | |
Rust | Rust | |
GNU General Public License v3.0 or later | Apache License 2.0 |
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awint
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Introducing the Arbitrary Width Integers crate`awint`, with separated storage and reference types, no-std, no-alloc, and `const` capable computation, and other features
Additionally as far as I am aware, this is the first biginteger library to use what I think is called "separated storage and reference types". Similar to the way that Rust has storage types like [T; N], Vec , and String and reference types like [T] and str, my library has the storage types ExtAwi and InlAwi, with the common reference type being Bits. Bits uses some DST magic to achieve only single pointer indirection while being able to take advantages of Rust's mutable and immutable reference mechanics. Parts of the crate are admittedly hacks and use a lot of unsafe to achieve these things performantly, but I have a drawn on my previous numerical fuzzing experience and built a huge test suite (see `testcrate` in my repo) with purpose built tests for every function that is run under MIRI, debug mode with plenty of debug assertions, and release mode with a large number of iterations.
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Hey Rustaceans! Got an easy question? Ask here (20/2021)!
I just published my awint system of crates today. I have a no_alloc_test crate in the repository that builds and links the main crate to make sure that no dependency on an allocator is brought in (building the main crate is not enough, it seems that the checks for an allocator only occurs when linking to a building binary). When I follow the exact sequence of instructions that the `no_alloc_build` job in the `.github/workflow` file takes, it works first time on a local machine (specifically, Debian WSL 2 with a freshly downloaded rustup), but it fails with linking errors on the Actions CI run. How do I debug this issue?
sled
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SableDb – a key/value store that uses RocksDB and Redis API (written in Rust)
a few times, seems interesting. The author's also built a lot of other cool concurrency primitives for Rust as well.
[0] https://github.com/spacejam/sled
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Is Something Bugging You?
- Dropbox [3] uses a similar approach but they talk about it a bit more abstractly.
Sans-IO is more documented in Python [4], but str0m [5] and quinn-proto [6] are the best examples in Rust I’m aware of. Note that sans-IO is orthogonal to deterministic test frameworks, but it composes well with them.
With the disclaimer that my opinions are mine and mine alone, and don’t reflect the company I work at —— I do work at a rust shop that has utilized these techniques on some projects.
TigerBeetle is an amazing example and I’ve looked at it before! They are really the best example of this approach outside of FoundationDB I think.
[0]: https://risingwave.com/blog/deterministic-simulation-a-new-e...
[1]: https://risingwave.com/blog/applying-deterministic-simulatio...
[2]: https://dropbox.tech/infrastructure/-testing-our-new-sync-en...
[3]: https://github.com/spacejam/sled
[4]: https://fractalideas.com/blog/sans-io-when-rubber-meets-road...
[5]: https://github.com/algesten/str0m
[6]: https://docs.rs/quinn-proto/0.10.6/quinn_proto/struct.Connec...
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RFC: redb (embedded key-value store) nearing version 1.0
Sled uses bw-tree actually https://github.com/spacejam/sled/wiki/sled-architectural-outlook
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Production grade databases in Rust
There is a valid argument to be made for threads over async in a large percentage of use cases where async is considered the default. If this is what you are referring to however, I don't think they ever referred to async as completely useless: https://github.com/spacejam/sled/issues/1123.
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Best local database that works on all platforms including web?
Have you looked into other pure-Rust databases as well, such as sled or GlueSQL which has an SQL interface on top of sled? I wonder how those would compare to Persy.
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Are there any embedded databases that have multiple-process support?
I'm not sure what you need. Are these of any use? https://github.com/meilisearch/heed https://github.com/spacejam/sled
- Some key-value storage engines in Rust
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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 also Sled but as I understand it that is being reworked to use the author's new DB core Marble
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GreptimeDB: a new open source database designed for large-scale time-series data storage and processing, written in rust
There are some databases like sled/FlashDB designed to be embedded to other applications even bare metal microcontrollers. But I do doubt the potential bussiness value of a pure embedded database.
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Ask HN: Serverless” key value store with transactions?
https://github.com/spacejam/sled
To add transaction support, you probably need a good understanding of how the memtable works in Log Structured Merge trees:
What are some alternatives?
rust-rest
RocksDB - A library that provides an embeddable, persistent key-value store for fast storage.
bevy - A refreshingly simple data-driven game engine built in Rust
rust-rocksdb - rust wrapper for rocksdb
Amethyst - Data-oriented and data-driven game engine written in Rust
redis-rs - Redis library for rust
sqlx - 🧰 The Rust SQL Toolkit. An async, pure Rust SQL crate featuring compile-time checked queries without a DSL. Supports PostgreSQL, MySQL, and SQLite.
Rocket - A web framework for Rust.
mini-redis - Incomplete Redis client and server implementation using Tokio - for learning purposes only
heed - A fully typed LMDB wrapper with minimum overhead 🐦
tokio - A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...