feat: add moka backend and config

Cargo.toml

@@ -6,9 +6,13 @@ edition = "2021"
 
 [dependencies]
 confy = "0.6"
+serde = { version = "1", features = ["derive"]}
 anyhow = "1.0"
 tracing = "0.1"
 tracing-subscriber = "0.3"
 axum = {version="0.7", default-features= false, features= ["tokio", "http2"] }
 tokio = {version="1", default-features=false, features= ["rt-multi-thread", "sync"] }
 reqwest = {version="0.12", default-features=false, features=["rustls-tls", "http2"]}
+url = {version="2.5.0", features=["serde"]}
+moka = {version="0.12", features=["future"]}
+ahash = "0.8"

src/config.rs

@@ -0,0 +1,25 @@
+use std::time::Duration;
+
+use reqwest::Url;
+use serde::{Deserialize, Serialize};
+/// configuration struct.
+/// Example:
+/// listen_port: 9834,
+/// endpoints: [("/api1", "127.0.0.1:3998")]
+#[derive(Serialize, Deserialize, Default)]
+pub struct Config {
+    /// port to which Mnemosyne will listen for incoming requests.
+    pub listen_port: u16,
+    /// String is the path mnemosyne will accept request and redirect them to Url
+    pub endpoints: Vec<(String, Url)>,
+    /// cache backend configuration
+    pub cache: CacheConfig,
+}
+
+#[derive(Serialize, Deserialize, Default)]
+pub struct CacheConfig {
+    /// cache expiration after last request
+    pub expiration: Duration,
+    /// maximum cache entry
+    pub max_entry: u64,
+}