chore: drop redis

Cargo.lock

@@ -188,7 +188,6 @@ dependencies = [
  "once_cell",
  "poise",
  "rand 0.9.2",
- "redis",
  "regex",
  "reqwest 0.12.23",
  "reqwest-middleware",
@@ -338,20 +337,6 @@ dependencies = [
  "windows-link 0.2.0",
 ]
 
-[[package]]
-name = "combine"
-version = "4.6.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba5a308b75df32fe02788e748662718f03fde005016435c444eea572398219fd"
-dependencies = [
- "bytes",
- "futures-core",
- "memchr",
- "pin-project-lite",
- "tokio",
- "tokio-util",
-]
-
 [[package]]
 name = "command_attr"
 version = "0.5.3"
@@ -1667,16 +1652,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "num-bigint"
-version = "0.4.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
-dependencies = [
- "num-integer",
- "num-traits",
-]
-
 [[package]]
 name = "num-bigint-dig"
 version = "0.8.4"
@@ -2043,17 +2018,6 @@ version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
-[[package]]
-name = "r2d2"
-version = "0.8.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51de85fb3fb6524929c8a2eb85e6b6d363de4e8c48f9e2c2eac4944abc181c93"
-dependencies = [
- "log",
- "parking_lot",
- "scheduled-thread-pool",
-]
-
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -2122,29 +2086,6 @@ dependencies = [
  "bitflags 2.9.4",
 ]
 
-[[package]]
-name = "redis"
-version = "0.32.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7cd3650deebc68526b304898b192fa4102a4ef0b9ada24da096559cb60e0eef8"
-dependencies = [
- "bytes",
- "cfg-if",
- "combine",
- "futures-util",
- "itoa",
- "num-bigint",
- "percent-encoding",
- "pin-project-lite",
- "r2d2",
- "ryu",
- "sha1_smol",
- "socket2 0.6.0",
- "tokio",
- "tokio-util",
- "url",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.5.17"
@@ -2466,15 +2407,6 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
-[[package]]
-name = "scheduled-thread-pool"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cbc66816425a074528352f5789333ecff06ca41b36b0b0efdfbb29edc391a19"
-dependencies = [
- "parking_lot",
-]
-
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -2653,12 +2585,6 @@ dependencies = [
  "digest",
 ]
 
-[[package]]
-name = "sha1_smol"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbfa15b3dddfee50a0fff136974b3e1bde555604ba463834a7eb7deb6417705d"
-
 [[package]]
 name = "sha2"
 version = "0.10.9"

Cargo.toml

@@ -20,7 +20,6 @@ futures = "0.3"
 http = "1.3.1"
 poise = "0.6.1"
 rand = "0.9.2"
-redis = { version = "0.32.5", features = ["tokio-comp", "r2d2"] }
 regex = "1.10"
 reqwest = { version = "0.12.23", features = ["json", "cookies"] }
 reqwest-middleware = { version = "0.4.2", features = ["json"] }

src/config/mod.rs

@@ -25,8 +25,6 @@ pub struct Config {
     pub port: u16,
     /// Database connection URL
     pub database_url: String,
-    /// Redis connection URL
-    pub redis_url: String,
     /// Graceful shutdown timeout duration
     ///
     /// Accepts both numeric values (seconds) and duration strings

src/main.rs

@@ -118,8 +118,7 @@ async fn main() {
     .expect("Failed to create BannerApi");
 
     let banner_api_arc = Arc::new(banner_api);
-    let app_state = AppState::new(banner_api_arc.clone(), &config.redis_url, db_pool.clone())
+    let app_state = AppState::new(banner_api_arc.clone(), db_pool.clone());
-        .expect("Failed to create AppState");
 
     // Create BannerState for web service
     let banner_state = BannerState {

src/state.rs

@@ -3,51 +3,29 @@
 use crate::banner::BannerApi;
 use crate::banner::Course;
 use anyhow::Result;
-use redis::AsyncCommands;
-use redis::Client;
 use sqlx::PgPool;
 use std::sync::Arc;
 
 #[derive(Clone)]
 pub struct AppState {
     pub banner_api: Arc<BannerApi>,
-    pub redis: Arc<Client>,
     pub db_pool: PgPool,
 }
 
 impl AppState {
-    pub fn new(
+    pub fn new(banner_api: Arc<BannerApi>, db_pool: PgPool) -> Self {
-        banner_api: Arc<BannerApi>,
+        Self {
-        redis_url: &str,
-        db_pool: PgPool,
-    ) -> Result<Self, Box<dyn std::error::Error + Send + Sync>> {
-        let redis_client = Client::open(redis_url)?;
-
-        Ok(Self {
             banner_api,
-            redis: Arc::new(redis_client),
             db_pool,
-        })
+        }
     }
 
-    /// Get a course by CRN with Redis cache fallback to Banner API
+    /// Get a course by CRN directly from Banner API
     pub async fn get_course_or_fetch(&self, term: &str, crn: &str) -> Result<Course> {
-        let mut conn = self.redis.get_multiplexed_async_connection().await?;
+        self.banner_api
-
+            .get_course_by_crn(term, crn)
-        let key = format!("class:{crn}");
+            .await?
-        if let Some(serialized) = conn.get::<_, Option<String>>(&key).await? {
+            .ok_or_else(|| anyhow::anyhow!("Course not found for CRN {crn}"))
-            let course: Course = serde_json::from_str(&serialized)?;
-            return Ok(course);
-        }
-
-        // Fallback: fetch from Banner API
-        if let Some(course) = self.banner_api.get_course_by_crn(term, crn).await? {
-            let serialized = serde_json::to_string(&course)?;
-            let _: () = conn.set(&key, serialized).await?;
-            return Ok(course);
-        }
-
-        Err(anyhow::anyhow!("Course not found for CRN {crn}"))
     }
 
     /// Get the total number of courses in the database

src/web/routes.rs

@@ -69,18 +69,8 @@ async fn status(State(_state): State<BannerState>) -> Json<Value> {
 async fn metrics(State(_state): State<BannerState>) -> Json<Value> {
     // For now, return basic metrics structure
     Json(json!({
-        "redis": {
+        "banner_api": {
-            "status": "connected",
+            "status": "connected"
-            "connected_clients": "TODO: implement client counting",
-            "used_memory": "TODO: implement memory tracking"
-        },
-        "cache": {
-            "courses": {
-                "count": "TODO: implement course counting"
-            },
-            "subjects": {
-                "count": "TODO: implement subject counting"
-            }
         },
         "timestamp": chrono::Utc::now().to_rfc3339()
     }))