roaring
sled
| roaring | sled | |
|---|---|---|
| 5 | 37 | |
| 2,349 | 7,758 | |
| 0.9% | - | |
| 7.6 | 1.8 | |
| 14 days ago | 17 days ago | |
| Go | Rust | |
| Apache License 2.0 | Apache License 2.0 |
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roaring
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I have some questions about defining a series of bits in Golang
For (3), and if you’re interested in checking if specific bits are set or not, take a look at https://github.com/bits-and-blooms/bitset and https://github.com/RoaringBitmap/roaring.
- Bitmasks - how and why to use?
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Skipfilter
Each topic has a roaring bitmap. Each bit corresponds to a subscriber in the skip list. For each topic, head and tail cursors are also maintained to ensure that newly added subscriptions are always tested and deleted subscriptions are always evicted. Roaring bitmaps are compressed and discontinuous so memory usage again remains bounded as subscribers come and go.
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Bit shifting blew my mind
Definitely take a look at a roaring bitmap. https://github.com/RoaringBitmap/roaring
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Protocol buffers database, a Key-Value database on the wire
Roaring bitmaps + btrees are a rock solid indexing approach. Alternatively, bleve has a lot out of the box but that's introducing a new datastore, basically.
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?
skiplist - skiplist for golang
RocksDB - A library that provides an embeddable, persistent key-value store for fast storage.
boomfilters - Probabilistic data structures for processing continuous, unbounded streams.
rust-rocksdb - rust wrapper for rocksdb
bit - Bitset data structure
redis-rs - Redis library for rust
bitset - Go package implementing bitsets
sqlx - 🧰 The Rust SQL Toolkit. An async, pure Rust SQL crate featuring compile-time checked queries without a DSL. Supports PostgreSQL, MySQL, and SQLite.
hyperloglog - HyperLogLog with lots of sugar (Sparse, LogLog-Beta bias correction and TailCut space reduction) brought to you by Axiom
mini-redis - Incomplete Redis client and server implementation using Tokio - for learning purposes only
golang-set - A simple, battle-tested and generic set type for the Go language. Trusted by Docker, 1Password, Ethereum and Hashicorp.
heed - A fully typed LMDB wrapper with minimum overhead 🐦