Crate replane 

Rust SDK for Replane: dynamic configuration with real-time updates.

The client keeps an SSE connection to the Replane server, holds every config of the SDK key’s project and environment in memory, and evaluates overrides locally, so reads are synchronous and the context never leaves your process.

use replane::{ConnectOptions, Context, Replane};

#[tokio::main]
async fn main() -> replane::Result<()> {
    let replane = Replane::builder()
        .default_value("rate-limit", 100)
        .connect(ConnectOptions::new("https://replane.example.com", "rp_..."))
        .await?;

    let ctx = Context::new().with("plan", "pro");
    let limit: u32 = replane.get_with("rate-limit", &ctx)?;
    println!("rate limit: {limit}");
    Ok(())
}

Structs

Config

A config as delivered by the Replane SDK API: a base value plus overrides that are evaluated locally against the caller’s context.

ConfigChange

Notification passed to subscribers when a config changes on the server.

ConnectOptions

Options for connecting to a Replane server.

Context

Properties that overrides are evaluated against, e.g. user ID, plan or region.

Override

An override replaces the base value when all of its conditions match.

Replane

Replane client.

ReplaneBuilder

Builder for Replane.

Snapshot

A serializable copy of the client’s configs, e.g. to hydrate another client.

Subscription

Handle returned by Replane::subscribe; dropping it unsubscribes.

Enums

Condition

An override condition with config references already resolved by the server.

ContextValue

A primitive value used for override evaluation.

EvaluationResult

ReplaneError

Errors returned by the Replane client.

Constants

REPLANE_CLIENT_ID_KEY

Context key holding an ID generated per client, usable for segmentation. A value provided in the client context takes precedence.

Functions

evaluate_condition

evaluate_overrides

Returns the value of the first override whose conditions all match, or base.

Type Aliases

Result