diff --git a/auth/cookie-auth/src/main.rs b/auth/cookie-auth/src/main.rs
index cb0490b..76aecda 100644
--- a/auth/cookie-auth/src/main.rs
+++ b/auth/cookie-auth/src/main.rs
@@ -1,5 +1,4 @@
-use actix_identity::Identity;
-use actix_identity::{CookieIdentityPolicy, IdentityService};
+use actix_identity::{CookieIdentityPolicy, Identity, IdentityService};
 use actix_web::{middleware, web, App, HttpResponse, HttpServer};
 use rand::Rng;
 
diff --git a/auth/cookie-session/src/main.rs b/auth/cookie-session/src/main.rs
index 19f82f8..96d4e7e 100644
--- a/auth/cookie-session/src/main.rs
+++ b/auth/cookie-session/src/main.rs
@@ -5,8 +5,14 @@
 //!
 //! [User guide](https://actix.rs/docs/middleware/#user-sessions)
 
-use actix_session::{storage::CookieSessionStore, Session, SessionMiddleware};
-use actix_web::{cookie::Key, middleware::Logger, web, App, HttpRequest, HttpServer, Result};
+use actix_session::{
+    config::PersistentSession, storage::CookieSessionStore, Session, SessionMiddleware,
+};
+use actix_web::{
+    cookie::{self, Key},
+    middleware::Logger,
+    web, App, HttpRequest, HttpServer, Result,
+};
 
 /// simple index handler with session
 async fn index(session: Session, req: HttpRequest) -> Result<&'static str> {
@@ -39,6 +45,10 @@ async fn main() -> std::io::Result<()> {
             .wrap(
                 SessionMiddleware::builder(CookieSessionStore::default(), Key::from(&[0; 64]))
                     .cookie_secure(false)
+                    // customize session and cookie expiration
+                    .session_lifecycle(
+                        PersistentSession::default().session_ttl(cookie::time::Duration::hours(2)),
+                    )
                     .build(),
             )
             .service(web::resource("/").to(index))
diff --git a/auth/simple-auth-server/src/auth_handler.rs b/auth/simple-auth-server/src/auth_handler.rs
index b4b0942..b0d3f84 100644
--- a/auth/simple-auth-server/src/auth_handler.rs
+++ b/auth/simple-auth-server/src/auth_handler.rs
@@ -2,13 +2,14 @@ use std::future::{ready, Ready};
 
 use actix_identity::Identity;
 use actix_web::{dev::Payload, web, Error, FromRequest, HttpRequest, HttpResponse};
-use diesel::prelude::*;
-use diesel::PgConnection;
+use diesel::{prelude::*, PgConnection};
 use serde::Deserialize;
 
-use crate::errors::ServiceError;
-use crate::models::{Pool, SlimUser, User};
-use crate::utils::verify;
+use crate::{
+    errors::ServiceError,
+    models::{Pool, SlimUser, User},
+    utils::verify,
+};
 
 #[derive(Debug, Deserialize)]
 pub struct AuthData {
diff --git a/auth/simple-auth-server/src/invitation_handler.rs b/auth/simple-auth-server/src/invitation_handler.rs
index ed9c68c..dc94a9e 100644
--- a/auth/simple-auth-server/src/invitation_handler.rs
+++ b/auth/simple-auth-server/src/invitation_handler.rs
@@ -2,8 +2,10 @@ use actix_web::{web, HttpResponse};
 use diesel::{prelude::*, PgConnection};
 use serde::Deserialize;
 
-use crate::email_service::send_invitation;
-use crate::models::{Invitation, Pool};
+use crate::{
+    email_service::send_invitation,
+    models::{Invitation, Pool},
+};
 
 #[derive(Deserialize)]
 pub struct InvitationData {
diff --git a/auth/simple-auth-server/src/main.rs b/auth/simple-auth-server/src/main.rs
index df835c5..0016ee4 100644
--- a/auth/simple-auth-server/src/main.rs
+++ b/auth/simple-auth-server/src/main.rs
@@ -3,8 +3,10 @@ extern crate diesel;
 
 use actix_identity::{CookieIdentityPolicy, IdentityService};
 use actix_web::{middleware, web, App, HttpServer};
-use diesel::prelude::*;
-use diesel::r2d2::{self, ConnectionManager};
+use diesel::{
+    prelude::*,
+    r2d2::{self, ConnectionManager},
+};
 use time::Duration;
 
 mod auth_handler;
diff --git a/auth/simple-auth-server/src/register_handler.rs b/auth/simple-auth-server/src/register_handler.rs
index d92df16..7c4086b 100644
--- a/auth/simple-auth-server/src/register_handler.rs
+++ b/auth/simple-auth-server/src/register_handler.rs
@@ -2,9 +2,11 @@ use actix_web::{web, HttpResponse};
 use diesel::prelude::*;
 use serde::Deserialize;
 
-use crate::errors::ServiceError;
-use crate::models::{Invitation, Pool, SlimUser, User};
-use crate::utils::hash_password;
+use crate::{
+    errors::ServiceError,
+    models::{Invitation, Pool, SlimUser, User},
+    utils::hash_password,
+};
 
 // UserData is used to extract data from a post request by the client
 #[derive(Debug, Deserialize)]
@@ -34,8 +36,10 @@ fn query(
     password: String,
     pool: web::Data<Pool>,
 ) -> Result<SlimUser, crate::errors::ServiceError> {
-    use crate::schema::invitations::dsl::{id, invitations};
-    use crate::schema::users::dsl::users;
+    use crate::schema::{
+        invitations::dsl::{id, invitations},
+        users::dsl::users,
+    };
     let invitation_id = uuid::Uuid::parse_str(&invitation_id)?;
 
     let conn: &PgConnection = &pool.get().unwrap();
diff --git a/basics/hello-world/src/main.rs b/basics/hello-world/src/main.rs
index 50960f0..e3f6514 100644
--- a/basics/hello-world/src/main.rs
+++ b/basics/hello-world/src/main.rs
@@ -24,9 +24,7 @@ async fn main() -> std::io::Result<()> {
 
 #[cfg(test)]
 mod tests {
-    use actix_web::body::to_bytes;
-    use actix_web::dev::Service;
-    use actix_web::{http, test, web, App, Error};
+    use actix_web::{body::to_bytes, dev::Service, http, test, web, App, Error};
 
     use super::*;
 
diff --git a/basics/state/src/main.rs b/basics/state/src/main.rs
index 0d37bdf..3b90681 100644
--- a/basics/state/src/main.rs
+++ b/basics/state/src/main.rs
@@ -18,10 +18,14 @@
 //!
 //! Check [user guide](https://actix.rs/docs/application/#state) for more info.
 
-use std::cell::Cell;
-use std::io;
-use std::sync::atomic::{AtomicUsize, Ordering};
-use std::sync::Mutex;
+use std::{
+    cell::Cell,
+    io,
+    sync::{
+        atomic::{AtomicUsize, Ordering},
+        Mutex,
+    },
+};
 
 use actix_web::{
     middleware,
diff --git a/data-factory/src/main.rs b/data-factory/src/main.rs
index a71d409..6f878bc 100644
--- a/data-factory/src/main.rs
+++ b/data-factory/src/main.rs
@@ -1,5 +1,4 @@
-use actix_web::web::Data;
-use actix_web::{get, App, HttpServer};
+use actix_web::{get, web::Data, App, HttpServer};
 use redis_tang::{Builder, Pool, RedisManager};
 
 #[actix_web::main]
diff --git a/forms/form/src/main.rs b/forms/form/src/main.rs
index 7922ec5..e300ad7 100644
--- a/forms/form/src/main.rs
+++ b/forms/form/src/main.rs
@@ -70,11 +70,16 @@ async fn handle_post_3(req: HttpRequest, params: web::Form<MyParams>) -> impl Re
 
 #[cfg(test)]
 mod tests {
-    use actix_web::body::to_bytes;
-    use actix_web::dev::{Service, ServiceResponse};
-    use actix_web::http::{header::HeaderValue, header::CONTENT_TYPE, StatusCode};
-    use actix_web::test::{self, TestRequest};
-    use actix_web::web::{Bytes, Form};
+    use actix_web::{
+        body::to_bytes,
+        dev::{Service, ServiceResponse},
+        http::{
+            header::{HeaderValue, CONTENT_TYPE},
+            StatusCode,
+        },
+        test::{self, TestRequest},
+        web::{Bytes, Form},
+    };
 
     use super::*;
 
diff --git a/forms/multipart-s3/src/main.rs b/forms/multipart-s3/src/main.rs
index 5634cf3..0f92394 100644
--- a/forms/multipart-s3/src/main.rs
+++ b/forms/multipart-s3/src/main.rs
@@ -1,13 +1,11 @@
 use std::fs;
 
 use actix_multipart::Multipart;
-use actix_web::body::SizedStream;
-use actix_web::{delete, error};
 use actix_web::{
-    get, middleware::Logger, post, web, App, Error, HttpResponse, HttpServer, Responder,
+    body::SizedStream, delete, error, get, middleware::Logger, post, web, App, Error, HttpResponse,
+    HttpServer, Responder,
 };
-use actix_web_lab::extract::Path;
-use actix_web_lab::respond::Html;
+use actix_web_lab::{extract::Path, respond::Html};
 use aws_config::meta::region::RegionProviderChain;
 use dotenv::dotenv;
 use serde::{Deserialize, Serialize};
@@ -18,10 +16,7 @@ mod temp_file;
 mod upload_file;
 mod utils;
 
-use self::client::Client;
-use self::temp_file::TempFile;
-use self::upload_file::UploadedFile;
-use self::utils::split_payload;
+use self::{client::Client, temp_file::TempFile, upload_file::UploadedFile, utils::split_payload};
 
 #[derive(Debug, Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
diff --git a/graphql/juniper-advanced/src/db.rs b/graphql/juniper-advanced/src/db.rs
index e0983dd..60fad57 100644
--- a/graphql/juniper-advanced/src/db.rs
+++ b/graphql/juniper-advanced/src/db.rs
@@ -1,5 +1,7 @@
-use r2d2_mysql::mysql::{Opts, OptsBuilder};
-use r2d2_mysql::MysqlConnectionManager;
+use r2d2_mysql::{
+    mysql::{Opts, OptsBuilder},
+    MysqlConnectionManager,
+};
 
 pub type Pool = r2d2::Pool<MysqlConnectionManager>;
 
diff --git a/graphql/juniper/src/schema.rs b/graphql/juniper/src/schema.rs
index 8200d60..9f7b47c 100644
--- a/graphql/juniper/src/schema.rs
+++ b/graphql/juniper/src/schema.rs
@@ -1,5 +1,4 @@
-use juniper::FieldResult;
-use juniper::{EmptySubscription, RootNode};
+use juniper::{EmptySubscription, FieldResult, RootNode};
 
 #[derive(GraphQLEnum)]
 enum Episode {
diff --git a/json/jsonrpc/src/convention.rs b/json/jsonrpc/src/convention.rs
index e3aca49..26e8f2c 100644
--- a/json/jsonrpc/src/convention.rs
+++ b/json/jsonrpc/src/convention.rs
@@ -1,7 +1,7 @@
 //! JSON-RPC 2.0 Specification
 //! See: https://www.jsonrpc.org/specification
-use std::error;
-use std::fmt;
+
+use std::{error, fmt};
 
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
diff --git a/middleware/middleware-ext-mut/src/add_msg.rs b/middleware/middleware-ext-mut/src/add_msg.rs
index e8e36e3..5aa1423 100644
--- a/middleware/middleware-ext-mut/src/add_msg.rs
+++ b/middleware/middleware-ext-mut/src/add_msg.rs
@@ -3,10 +3,9 @@ use std::{
     task::{Context, Poll},
 };
 
-use actix_web::Error;
 use actix_web::{
     dev::{Service, ServiceRequest, ServiceResponse, Transform},
-    HttpMessage,
+    Error, HttpMessage,
 };
 
 #[derive(Debug, Clone)]
diff --git a/middleware/middleware/src/redirect.rs b/middleware/middleware/src/redirect.rs
index dffd42d..e28f386 100644
--- a/middleware/middleware/src/redirect.rs
+++ b/middleware/middleware/src/redirect.rs
@@ -1,9 +1,10 @@
 use std::future::{ready, Ready};
 
-use actix_web::body::EitherBody;
-use actix_web::dev::{self, ServiceRequest, ServiceResponse};
-use actix_web::dev::{Service, Transform};
-use actix_web::{http, Error, HttpResponse};
+use actix_web::{
+    body::EitherBody,
+    dev::{self, Service, ServiceRequest, ServiceResponse, Transform},
+    http, Error, HttpResponse,
+};
 use futures_util::future::LocalBoxFuture;
 
 pub struct CheckLogin;
diff --git a/rustfmt.toml b/rustfmt.toml
index 38b9e24..71b9be3 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,2 +1,3 @@
-reorder_imports = true
 group_imports = "StdExternalCrate"
+imports_granularity = "Crate"
+use_field_init_shorthand = true
diff --git a/templating/tinytemplate/src/main.rs b/templating/tinytemplate/src/main.rs
index 97187e6..4d34276 100644
--- a/templating/tinytemplate/src/main.rs
+++ b/templating/tinytemplate/src/main.rs
@@ -1,11 +1,14 @@
 use std::collections::HashMap;
 
-use actix_web::body::BoxBody;
-use actix_web::dev::ServiceResponse;
-use actix_web::http::header::ContentType;
-use actix_web::http::StatusCode;
-use actix_web::middleware::{ErrorHandlerResponse, ErrorHandlers};
-use actix_web::{error, middleware, web, App, Error, HttpResponse, HttpServer, Result};
+use actix_web::{
+    body::BoxBody,
+    dev::ServiceResponse,
+    error,
+    http::{header::ContentType, StatusCode},
+    middleware,
+    middleware::{ErrorHandlerResponse, ErrorHandlers},
+    web, App, Error, HttpResponse, HttpServer, Result,
+};
 use serde_json::json;
 use tinytemplate::TinyTemplate;