diff --git a/crates/url_shortner/src/common/mod.rs b/crates/url_shortner/src/common/mod.rs
index e044668..b15aec6 100644
--- a/crates/url_shortner/src/common/mod.rs
+++ b/crates/url_shortner/src/common/mod.rs
@@ -6,4 +6,4 @@
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 pub mod types;
-pub mod utils;
\ No newline at end of file
+pub mod utils;
diff --git a/crates/url_shortner/src/common/types.rs b/crates/url_shortner/src/common/types.rs
index d15470c..501c366 100644
--- a/crates/url_shortner/src/common/types.rs
+++ b/crates/url_shortner/src/common/types.rs
@@ -11,4 +11,4 @@ use serde::{Deserialize, Serialize};
 #[derive(Deserialize, Serialize, Clone, Copy, Debug, Eq, PartialEq, PartialOrd)]
 pub struct TimeStamp(pub DateTime<Utc>);
 #[derive(Serialize, Deserialize, Clone, Debug, Eq, Hash, PartialEq)]
-pub struct UrlShortCode (pub String);
+pub struct UrlShortCode(pub String);
diff --git a/crates/url_shortner/src/common/utils.rs b/crates/url_shortner/src/common/utils.rs
index 1ea6aff..9d16762 100644
--- a/crates/url_shortner/src/common/utils.rs
+++ b/crates/url_shortner/src/common/utils.rs
@@ -11,4 +11,4 @@ pub fn from_maybe<T>(maybe_value: Option<T>, default: T) -> T {
         Some(value) => value,
         None => default,
     }
-}
\ No newline at end of file
+}
diff --git a/crates/url_shortner/src/domain/action/internal/crud.rs b/crates/url_shortner/src/domain/action/internal/crud.rs
index fe4a292..4d6f906 100644
--- a/crates/url_shortner/src/domain/action/internal/crud.rs
+++ b/crates/url_shortner/src/domain/action/internal/crud.rs
@@ -8,16 +8,16 @@ the GNU Affero General Public License along with this program. If not, see <http
 
 use crate::{
     common::{
-        types::{TimeStamp, UrlShortCode}, 
-        utils::from_maybe
-    }, 
-    domain::types::internal::crud::*, 
-    environment::AppState, 
-    redis::commands::set_base_url_for_short_code, 
-    tools::error::AppError
+        types::{TimeStamp, UrlShortCode},
+        utils::from_maybe,
+    },
+    domain::types::internal::crud::*,
+    environment::AppState,
+    redis::commands::set_base_url_for_short_code,
+    tools::error::AppError,
 };
 use actix_web::web::Data;
-use chrono::{Utc, Duration};
+use chrono::{Duration, Utc};
 use rand::{
     distributions::{Alphanumeric, DistString},
     thread_rng,
@@ -29,35 +29,46 @@ pub async fn generate_url(
     app_state: Data<AppState>,
     req: GenerateShortUrlRequest,
 ) -> Result<GenerateShortUrlResponse, AppError> {
-    
     println!("Generate short url req: {:?}", req);
 
-    let base_url = Url::parse(&req.base_url).map_err(|error| {
-        AppError::InvalidRequest(format!("URL parsing failed: {}", error))
-    })?;
+    let base_url = Url::parse(&req.base_url)
+        .map_err(|error| AppError::InvalidRequest(format!("URL parsing failed: {}", error)))?;
 
     println!("Parsed URL: {:?}", base_url);
-    
-    let expiry_seconds: Option<u32> = req.expiry_in_hours.and_then(|hours| Some(3600 * Into::<u32>::into(hours)));
+
+    let expiry_seconds: Option<u32> = req
+        .expiry_in_hours
+        .map(|hours| 3600 * Into::<u32>::into(hours));
     let redis_expiry_in_s = from_maybe(expiry_seconds, app_state.redis_expiry);
 
-    let UrlShortCode(final_short_code) = 
-        match req.custom_short_code {
-            Some(custom_short_code) => {
-                set_custom_code(&base_url, &custom_short_code, redis_expiry_in_s, &app_state.redis_pool).await?;
-                custom_short_code
-            },
-            None => {
-                let final_short_code = set_base_url(&base_url, redis_expiry_in_s, &app_state).await?;
-                final_short_code.ok_or_else(|| {
-                    AppError::InternalError(format!("Failed to generate unique short code after {} retries", app_state.max_retries_for_shortening))
-                })?
-            }
-        };
+    let UrlShortCode(final_short_code) = match req.custom_short_code {
+        Some(custom_short_code) => {
+            set_custom_code(
+                &base_url,
+                &custom_short_code,
+                redis_expiry_in_s,
+                &app_state.redis_pool,
+            )
+            .await?;
+            custom_short_code
+        }
+        None => {
+            let final_short_code = set_base_url(&base_url, redis_expiry_in_s, &app_state).await?;
+            final_short_code.ok_or_else(|| {
+                AppError::InternalError(format!(
+                    "Failed to generate unique short code after {} retries",
+                    app_state.max_retries_for_shortening
+                ))
+            })?
+        }
+    };
 
     let url_expiry = TimeStamp(Utc::now() + Duration::seconds(redis_expiry_in_s.into()));
     let short_url = format!("{}/{}", app_state.shortened_base_url, final_short_code);
-    println!("Generated short url: {} with expiry ts: {:?}", short_url, url_expiry.0);
+    println!(
+        "Generated short url: {} with expiry ts: {:?}",
+        short_url, url_expiry.0
+    );
 
     Ok(GenerateShortUrlResponse {
         short_url,
@@ -65,29 +76,27 @@ pub async fn generate_url(
     })
 }
 
-async fn set_custom_code (
+async fn set_custom_code(
     base_url: &Url,
     short_code: &UrlShortCode,
     redis_expiry: u32,
     persistent_redis: &RedisConnectionPool,
 ) -> Result<(), AppError> {
-    let is_key_set = set_base_url_for_short_code(
-        base_url,
-        &short_code, 
-        persistent_redis,
-        redis_expiry
-    ).await?;
+    let is_key_set =
+        set_base_url_for_short_code(base_url, short_code.clone(), persistent_redis, redis_expiry)
+            .await?;
 
-    if ! is_key_set {
+    if !is_key_set {
         let UrlShortCode(code) = short_code;
-        Err(AppError::InvalidRequest(format!("Short code: {code} already exists")))
-    }
-    else {
+        Err(AppError::InvalidRequest(format!(
+            "Short code: {code} already exists"
+        )))
+    } else {
         Ok(())
     }
 }
 
-async fn set_base_url (
+async fn set_base_url(
     base_url: &Url,
     redis_expiry: u32,
     app_state: &Data<AppState>,
@@ -100,19 +109,19 @@ async fn set_base_url (
         let short_code = UrlShortCode(Alphanumeric.sample_string(&mut rng, short_code_len));
         let is_key_set = set_base_url_for_short_code(
             base_url,
-            &short_code,
+            short_code.clone(),
             &app_state.redis_pool,
             redis_expiry,
-        ).await?;
+        )
+        .await?;
 
         if is_key_set {
             final_short_code = Some(short_code);
             break;
-        }
-        else {
+        } else {
             retries_rem -= 1;
         }
-    };
+    }
 
     Ok(final_short_code)
 }
diff --git a/crates/url_shortner/src/domain/action/internal/mod.rs b/crates/url_shortner/src/domain/action/internal/mod.rs
index 59956d1..9475ab5 100644
--- a/crates/url_shortner/src/domain/action/internal/mod.rs
+++ b/crates/url_shortner/src/domain/action/internal/mod.rs
@@ -5,4 +5,4 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-pub mod crud;
\ No newline at end of file
+pub mod crud;
diff --git a/crates/url_shortner/src/domain/action/mod.rs b/crates/url_shortner/src/domain/action/mod.rs
index fe49aa4..0188b32 100644
--- a/crates/url_shortner/src/domain/action/mod.rs
+++ b/crates/url_shortner/src/domain/action/mod.rs
@@ -5,5 +5,5 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-pub mod public_api;
 pub mod internal;
+pub mod public_api;
diff --git a/crates/url_shortner/src/domain/action/public_api.rs b/crates/url_shortner/src/domain/action/public_api.rs
index 6569bf2..8dfb47b 100644
--- a/crates/url_shortner/src/domain/action/public_api.rs
+++ b/crates/url_shortner/src/domain/action/public_api.rs
@@ -5,28 +5,31 @@ is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; wit
 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
 the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-use actix_web::web::{Data, Redirect};
 use crate::{
-    common::types::UrlShortCode, environment::AppState, 
-    redis::commands::*, 
-    tools::error::AppError
+    common::types::UrlShortCode, environment::AppState, redis::commands::*, tools::error::AppError,
 };
+use actix_web::web::{Data, Redirect};
 
 pub async fn redirect_to_url(
     app_state: Data<AppState>,
     url_short_code: UrlShortCode,
 ) -> Result<Redirect, AppError> {
-    println!("redirect request to url with short code: {:?}", url_short_code);
+    println!(
+        "redirect request to url with short code: {:?}",
+        url_short_code
+    );
 
-    let mb_base_url = get_base_url_by_short_code(&url_short_code, &app_state.redis_pool).await?;
+    let mb_base_url =
+        get_base_url_by_short_code(url_short_code.clone(), &app_state.redis_pool).await?;
 
     match mb_base_url {
         Some(base_url) => {
             println!("redirecting to: {}", base_url);
             Ok(Redirect::to(base_url.to_string()))
-        },
-        None => Err(AppError::
-            InvalidRequest(format!("No URL found for short code: {}", url_short_code.0))
-        )
+        }
+        None => Err(AppError::InvalidRequest(format!(
+            "No URL found for short code: {}",
+            url_short_code.0
+        ))),
     }
 }
diff --git a/crates/url_shortner/src/domain/api/internal/crud.rs b/crates/url_shortner/src/domain/api/internal/crud.rs
index 079ac78..4ae6d7b 100644
--- a/crates/url_shortner/src/domain/api/internal/crud.rs
+++ b/crates/url_shortner/src/domain/api/internal/crud.rs
@@ -5,18 +5,16 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
+use crate::{
+    domain::{action::internal::crud, types::internal::crud::*},
+    environment::AppState,
+    tools::{auth::authenticate, error::AppError},
+};
 use actix_web::{
     post,
     web::{Data, Json},
     HttpRequest,
 };
-use crate::{
-    domain::{
-        action::internal::crud, 
-        types::internal::crud::*
-    }, 
-    environment::AppState, tools::{auth::authenticate, error::AppError}
-};
 
 #[post("/internal/generateShortUrl")]
 async fn generate_url(
@@ -24,10 +22,9 @@ async fn generate_url(
     req: HttpRequest,
     param_obj: Json<GenerateShortUrlRequest>,
 ) -> Result<Json<GenerateShortUrlResponse>, AppError> {
-
     authenticate(&data.internal_auth_api_key, req)?;
 
     let req_body = param_obj.into_inner();
-    
+
     Ok(Json(crud::generate_url(data, req_body).await?))
-}
\ No newline at end of file
+}
diff --git a/crates/url_shortner/src/domain/api/internal/mod.rs b/crates/url_shortner/src/domain/api/internal/mod.rs
index 59956d1..9475ab5 100644
--- a/crates/url_shortner/src/domain/api/internal/mod.rs
+++ b/crates/url_shortner/src/domain/api/internal/mod.rs
@@ -5,4 +5,4 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-pub mod crud;
\ No newline at end of file
+pub mod crud;
diff --git a/crates/url_shortner/src/domain/api/public_api.rs b/crates/url_shortner/src/domain/api/public_api.rs
index a3a5676..2f4809e 100644
--- a/crates/url_shortner/src/domain/api/public_api.rs
+++ b/crates/url_shortner/src/domain/api/public_api.rs
@@ -11,10 +11,7 @@ use actix_web::{
 };
 
 use crate::{
-    common::types::*, 
-    domain::action::public_api, 
-    environment::AppState, 
-    tools::error::AppError,
+    common::types::*, domain::action::public_api, environment::AppState, tools::error::AppError,
 };
 
 #[get("/{urlShortCode}")]
@@ -23,5 +20,5 @@ async fn redirect_to_url(
     path: Path<String>,
 ) -> Result<Redirect, AppError> {
     let url_short_code = UrlShortCode(path.into_inner());
-    Ok(public_api::redirect_to_url(app_state, url_short_code).await?)
-}
\ No newline at end of file
+    public_api::redirect_to_url(app_state, url_short_code).await
+}
diff --git a/crates/url_shortner/src/domain/types/internal/crud.rs b/crates/url_shortner/src/domain/types/internal/crud.rs
index f8c9e64..ccb666e 100644
--- a/crates/url_shortner/src/domain/types/internal/crud.rs
+++ b/crates/url_shortner/src/domain/types/internal/crud.rs
@@ -5,8 +5,8 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-use serde::{Deserialize, Serialize};
 use crate::common::types::*;
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(rename_all = "camelCase")]
@@ -22,4 +22,4 @@ pub struct GenerateShortUrlRequest {
 pub struct GenerateShortUrlResponse {
     pub short_url: String,
     pub url_expiry: TimeStamp,
-}
\ No newline at end of file
+}
diff --git a/crates/url_shortner/src/domain/types/internal/mod.rs b/crates/url_shortner/src/domain/types/internal/mod.rs
index 59956d1..9475ab5 100644
--- a/crates/url_shortner/src/domain/types/internal/mod.rs
+++ b/crates/url_shortner/src/domain/types/internal/mod.rs
@@ -5,4 +5,4 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-pub mod crud;
\ No newline at end of file
+pub mod crud;
diff --git a/crates/url_shortner/src/domain/types/mod.rs b/crates/url_shortner/src/domain/types/mod.rs
index a775856..39c28e6 100644
--- a/crates/url_shortner/src/domain/types/mod.rs
+++ b/crates/url_shortner/src/domain/types/mod.rs
@@ -5,4 +5,4 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-pub mod internal;
\ No newline at end of file
+pub mod internal;
diff --git a/crates/url_shortner/src/environment.rs b/crates/url_shortner/src/environment.rs
index 9c0b232..cfe181e 100644
--- a/crates/url_shortner/src/environment.rs
+++ b/crates/url_shortner/src/environment.rs
@@ -6,12 +6,11 @@
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 
+use crate::tools::logger::LoggerConfig;
 use serde::Deserialize;
 use shared::redis::types::{RedisConnectionPool, RedisSettings};
 use std::sync::Arc;
 
-use crate::tools::logger::LoggerConfig;
-
 #[derive(Debug, Deserialize, Clone)]
 pub struct AppConfig {
     pub port: u16,
diff --git a/crates/url_shortner/src/redis/commands.rs b/crates/url_shortner/src/redis/commands.rs
index 990d8cc..aac81a4 100644
--- a/crates/url_shortner/src/redis/commands.rs
+++ b/crates/url_shortner/src/redis/commands.rs
@@ -5,50 +5,41 @@
     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
-use crate::{
-    redis::keys::*,
-    tools::error::AppError,
-    common::types::*,
-};
-use shared::redis::types::RedisConnectionPool;
+use crate::{common::types::*, redis::keys::*, tools::error::AppError};
 use reqwest::Url;
+use shared::redis::types::RedisConnectionPool;
 
 pub async fn set_base_url_for_short_code(
     base_url: &Url,
-    url_short_code: &UrlShortCode,
+    url_short_code: UrlShortCode,
     persistent_redis_pool: &RedisConnectionPool,
     redis_expiry: u32,
 ) -> Result<bool, AppError> {
-
-    let is_key_set = 
-        persistent_redis_pool
-            .setnx_with_expiry(
-                &url_short_code_key(url_short_code),
-                base_url.as_str(),
-                redis_expiry.into(),
-            )
-            .await
-            .map_err(|err| AppError::RedisError(err.to_string()))?;
+    let is_key_set = persistent_redis_pool
+        .setnx_with_expiry(
+            &url_short_code_key(url_short_code),
+            base_url.as_str(),
+            redis_expiry.into(),
+        )
+        .await
+        .map_err(|err| AppError::RedisError(err.to_string()))?;
 
     Ok(is_key_set)
 }
 
 pub async fn get_base_url_by_short_code(
-    url_short_code: &UrlShortCode,
+    url_short_code: UrlShortCode,
     persistent_redis_pool: &RedisConnectionPool,
 ) -> Result<Option<Url>, AppError> {
-    let base_url = 
-        persistent_redis_pool
-            .get_key_as_str(&url_short_code_key(url_short_code))
-            .await
-            .map_err(|err| AppError::RedisError(err.to_string()))?;
+    let base_url = persistent_redis_pool
+        .get_key_as_str(&url_short_code_key(url_short_code))
+        .await
+        .map_err(|err| AppError::RedisError(err.to_string()))?;
 
     match base_url {
-        Some(base_url) => Ok(
-            Some(Url::parse(&base_url).map_err(|error| {
-                AppError::InternalError(format!("URL parsing failed: {}", error))
-            })?)
-        ),
-        None => Ok(None)
+        Some(base_url) => Ok(Some(Url::parse(&base_url).map_err(|error| {
+            AppError::InternalError(format!("URL parsing failed: {}", error))
+        })?)),
+        None => Ok(None),
     }
-}
\ No newline at end of file
+}
diff --git a/crates/url_shortner/src/redis/keys.rs b/crates/url_shortner/src/redis/keys.rs
index 07fdd9c..6503073 100644
--- a/crates/url_shortner/src/redis/keys.rs
+++ b/crates/url_shortner/src/redis/keys.rs
@@ -9,6 +9,6 @@ use crate::common::types::*;
 
 const REDIS_KEY_PREFIX: &str = "url-shortner";
 
-pub fn url_short_code_key(UrlShortCode(url_short_code): &UrlShortCode) -> String {
+pub fn url_short_code_key(UrlShortCode(url_short_code): UrlShortCode) -> String {
     format!("{REDIS_KEY_PREFIX}:url_short_code:{url_short_code}")
-}
\ No newline at end of file
+}
diff --git a/crates/url_shortner/src/redis/mod.rs b/crates/url_shortner/src/redis/mod.rs
index 56cedf9..be66e7a 100644
--- a/crates/url_shortner/src/redis/mod.rs
+++ b/crates/url_shortner/src/redis/mod.rs
@@ -6,4 +6,4 @@
     the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 pub mod commands;
-pub mod keys;
\ No newline at end of file
+pub mod keys;
diff --git a/crates/url_shortner/src/tools/auth.rs b/crates/url_shortner/src/tools/auth.rs
index 5fcafb6..adf4379 100644
--- a/crates/url_shortner/src/tools/auth.rs
+++ b/crates/url_shortner/src/tools/auth.rs
@@ -10,10 +10,7 @@ use actix_web::HttpRequest;
 
 use super::error::AppError;
 
-pub fn authenticate(
-    internal_api_key: &str,
-    req: HttpRequest,
-) -> Result<(), AppError> {
+pub fn authenticate(internal_api_key: &str, req: HttpRequest) -> Result<(), AppError> {
     let token = req
         .headers()
         .get("x-api-key")
@@ -22,13 +19,13 @@ pub fn authenticate(
         .ok_or(AppError::InvalidRequest(
             "x-api-key (Header) is missing".to_string(),
         ))?;
-    
+
     if token != internal_api_key {
-        Err(
-            AppError::AuthFailed(format!("Invalid x-api-key: {}", token))
-        )
-    }
-    else {
+        Err(AppError::AuthFailed(format!(
+            "Invalid x-api-key: {}",
+            token
+        )))
+    } else {
         Ok(())
     }
-}
\ No newline at end of file
+}
diff --git a/flake.nix b/flake.nix
index 83a2a33..ab504c1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -65,6 +65,7 @@
             '';
             nativeBuildInputs = with pkgs; [
               just
+              cargo
             ];
           };