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Thread-safe in-memory key-value store.

License: Apache License 2.0

Rust 100.00%

memdb's Introduction

memdb

Thread-safe in-memory key-value store. Ideal for development and prototyping. Does not persist to disk.

Usage

let mut db = Memdb::open().await?;
db.set("beep", "boop").await?;
let val = db.get("beep").await?;
assert_eq!(val, Some("boop".as_bytes().to_owned()));
Ok(())

Installation

$ cargo add memdb

License

MIT OR Apache-2.0

memdb's People

Contributors

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alminer06 alejandrosocorro k-nasa johntitor nethunterslabs correabuscar

memdb's Issues

Swapping RwLock<HashMap> to DHashMap from ccl

Feature request and tracking issue.

Currently the datastore is behind a RwLock'ed map. This is very slow.

The difference this improvement brings is swapping RwLock<HashMap> to DHashMap from ccl. ccl is a crate with the fastest general purpose concurrent map and is a drop-in replacement.

This is useful because it speeds up the code significantly without additional complexity.

If this is accepted I can perform the change and submit a PR.

New release needed

Any chance of making a new release containing the latest changes, specially this commit?

With the latest versions of the compiler it won't compile if imported the usual way

memdb = "1.0.0"

At the moment I'm importing this crate as below which isn't ideal

memdb = { git = "https://github.com/yoshuawuyts/memdb", rev = "cdad31e5bf3bd4f95174a269ae6d581a9a44203a" }

error: no such subcommand: `add`

Choose one: is this a 🐛 bug report

Expected Behavior

Current Behavior

The readme says:

Installation
$ cargo add memdb

but cargo says:

error: no such subcommand: `add`

	Did you mean `doc`?

$ cargo -vV
cargo 1.39.0-nightly (ab6fa8908 2019-09-25)
release: 1.39.0
commit-hash: ab6fa8908c9b6c8f7e2249231c395eebfbc49891
commit-date: 2019-09-25

Possible Solution

cargo install memdb ?

error: specified package `memdb v1.0.0` has no binaries

nope, guess that's not it.
Manually adding it to [dependencies] in Cargo.toml ?

Your Environment

Software	Version(s)
Package	?
Runtime	?
Package Manager	pacman
Operating System	Arch Linux 64bit

[Q] How to print gotten value?

Choose one: this is a 🔦 question?

What's another way to do this assert_eq!(val, Some("boop".as_bytes().to_owned()));
by converting the val to the same/similar type that "boop" has? That line is from usage.

Or, in other words, how do you println! the gotten val?

let val = db.get("beep").await?;
//how to println! `val` here?