SurrealDB in-memory database in Rust

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Using the in-memory database can be very useful, especially in short-lived examples like we have but in other cases as well. It does not need any additional server component.

In this example we only setup the database connection without doing anything.

examples/surrealdb/in-memory-setup/Cargo.toml

[package]
name = "in-memory-setup"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
serde = { version = "1.0", features = ["derive"] }
surrealdb = { version = "2.0", features = ["kv-mem"] }
tokio = { version = "1.35", features = ["macros", "rt-multi-thread"] }

examples/surrealdb/in-memory-setup/src/main.rs

use surrealdb::engine::local::Mem;
use surrealdb::Surreal;

#[tokio::main]
async fn main() -> surrealdb::Result<()> {
    let db = Surreal::new::<Mem>(()).await?;

    db.use_ns("namespace").use_db("database").await?;

    Ok(())
}