br
bb8-redis
cargo install bb8-redis
br

bb8-redis

Full-featured async (tokio-based) postgres connection pool (like r2d2)

by Dirkjan Ochtman

0.7.0 (see all)License:MIT
cargo install bb8-redis
Readme

bb8

Documentation Crates.io Build status codecov License: MIT

A full-featured connection pool, designed for asynchronous connections (using tokio). Originally based on r2d2.

Opening a new database connection every time one is needed is both inefficient and can lead to resource exhaustion under high traffic conditions. A connection pool maintains a set of open connections to a database, handing them out for repeated use.

bb8 is agnostic to the connection type it is managing. Implementors of the ManageConnection trait provide the database-specific logic to create and check the health of connections.

A (possibly not exhaustive) list of adapters for different backends:

BackendAdapter Crate
tokio-postgresbb8-postgres (in-tree)
redisbb8-redis (in-tree)
rsmqrsmq_async
bolt-clientbb8-bolt
dieselbb8-diesel
tiberiusbb8-tiberius
nebula-clientbb8-nebula
memcache-asyncbb8-memcached
lapinbb8-lapin

Example

Using an imaginary "foodb" database.

fn main() {
    let manager = bb8_foodb::FooConnectionManager::new("localhost:1234");
    let pool = bb8::Pool::builder()
        .max_size(15)
        .build(manager)
        .unwrap();

    for _ in 0..20 {
        let pool = pool.clone();
        tokio::spawn(move || {
            let conn = pool.get().await.unwrap();
            // use the connection
            // it will be returned to the pool when it falls out of scope.
        })
    }
}

License

Licensed under the MIT license (LICENSE).

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be licensed as above, without any additional terms or conditions.

GitHub Stars

427

LAST COMMIT

9d ago

MAINTAINERS

2

CONTRIBUTORS

29

OPEN ISSUES

12

OPEN PRs

2
VersionTagPublished
0.7.0
2yrs ago
0.6.0
2yrs ago
0.5.0
2yrs ago
0.4.0
2yrs ago
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