diff --git a/.env b/.env
index cf1db3d..b433453 100644
--- a/.env
+++ b/.env
@@ -7,8 +7,10 @@ POSTGRES_DB=nocturne
 
 # backend settings
 GIT_WORK_DIR=../blog_posts_git
-BLOG_ENDPOINT=https://github.com/Lumither/blog-posts.git
 LOG_ROOT_DIR=/var/log/nocturne
+
+BLOG_ENDPOINT=https://github.com/Lumither/blog-posts.git
+WORD_DIR=~/.nocturne
 BACKEND_PORT=3001
 
 # frontend settings
diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index 5d3cbd3..1ae871b 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -1,25 +1,7 @@
-[package]
-name = "backend"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-axum = "0.7.5"
-dotenv = "0.15.0"
-serde = { version = "1.0.199", features = ["derive"] }
-serde_json = "1.0.116"
-tokio = { version = "1.37.0", features = ["full"] }
-uuid = { version = "1.8.0", features = ["v4", "fast-rng", "serde"] }
-sqlx = { version = "0.7.4", features = ["runtime-tokio", "tls-native-tls", "postgres", "chrono", "uuid"] }
-chrono = { version = "0.4.38", features = ["serde", "alloc"] }
-regex = "1.10.4"
-futures = { version = "0.3.30", features = ["executor"] }
-tracing = "0.1.40"
-tracing-subscriber = "0.3.18"
-tracing-appender = "0.2.3"
-log = "0.4.21"
-sha2 = "0.10.8"
-thiserror = "1.0.63"
-base64 = "0.22.1"
+[workspace]
+resolver = "2"
+members = [
+    "api_server",
+    "constants",
+    "markdown"
+]
diff --git a/backend/api_server/Cargo.toml b/backend/api_server/Cargo.toml
new file mode 100644
index 0000000..2543a40
--- /dev/null
+++ b/backend/api_server/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "api_server"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+constants = { path = "../constants" }
+chrono = "0.4.38"
+tracing = "0.1.40"
+tracing-subscriber = "0.3.18"
+tracing-appender = "0.2.3"
+dotenv = "0.15.0"
diff --git a/backend/api_server/src/init.rs b/backend/api_server/src/init.rs
new file mode 100644
index 0000000..8785944
--- /dev/null
+++ b/backend/api_server/src/init.rs
@@ -0,0 +1,22 @@
+use crate::logger;
+use std::env;
+use tracing_appender::non_blocking::WorkerGuard;
+
+pub fn logger_init() -> (WorkerGuard, WorkerGuard) {
+    logger::init()
+}
+
+pub fn load_env() {
+    if let Some(env_file) = env::args().nth(1) {
+        match dotenv::from_filename(&env_file) {
+            Ok(_) => {
+                println!("[info] env loaded from {}, starting up", env_file);
+            }
+            Err(e) => {
+                panic!("[fatal] failed to read {}: {}", env_file, e);
+            }
+        }
+    } else {
+        println!("[info] no .env file referred, starting up")
+    }
+}
diff --git a/backend/api_server/src/logger.rs b/backend/api_server/src/logger.rs
new file mode 100644
index 0000000..1887753
--- /dev/null
+++ b/backend/api_server/src/logger.rs
@@ -0,0 +1,68 @@
+use std::{env, io};
+
+use chrono::Local;
+use tracing::info;
+use tracing_appender::non_blocking::WorkerGuard;
+use tracing_appender::{non_blocking, rolling};
+use tracing_subscriber::fmt::format::Writer;
+use tracing_subscriber::fmt::time::FormatTime;
+use tracing_subscriber::fmt::MakeWriter;
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::{fmt, Registry};
+
+struct LocalTimer;
+
+impl FormatTime for LocalTimer {
+    fn format_time(&self, w: &mut Writer<'_>) -> std::fmt::Result {
+        write!(
+            w,
+            "{}",
+            Local::now().format(constants::time::DEFAULT_TIME_FORMAT)
+        )
+    }
+}
+
+type _LogWriter = dyn for<'writer> MakeWriter<'writer, Writer = dyn io::Write + 'static> + 'static;
+
+pub fn init() -> (WorkerGuard, WorkerGuard) {
+    let log_path = env::var("LOG_ROOT_DIR").unwrap_or_else(|e| {
+        panic!("[fatal] failed to load LOG_ROOT_DIR: {}", e);
+    });
+
+    let log_path = format!("{}/backend", log_path);
+
+    let (info_log_writer, info_guard) = non_blocking(rolling::never(&log_path, "info.log"));
+
+    let (err_log_writer, error_guard) = non_blocking(rolling::never(&log_path, "error.log"));
+
+    let log_format = tracing_subscriber::fmt::format()
+        .with_level(true)
+        .with_target(true)
+        .with_source_location(true)
+        .with_timer(LocalTimer);
+
+    let subscribers = Registry::default()
+        .with(
+            fmt::Layer::default()
+                .with_writer(info_log_writer)
+                .with_ansi(false),
+        )
+        .with(
+            fmt::Layer::default()
+                .with_writer(err_log_writer)
+                .with_ansi(false),
+        )
+        .with(
+            fmt::Layer::default()
+                .with_writer(io::stdout)
+                .with_ansi(true)
+                .event_format(log_format),
+        );
+
+    tracing::subscriber::set_global_default(subscribers)
+        .expect("[fatal] Failed to setup logging system");
+
+    info!("Module Started: Logger");
+
+    (info_guard, error_guard)
+}
diff --git a/backend/api_server/src/main.rs b/backend/api_server/src/main.rs
new file mode 100644
index 0000000..1db4480
--- /dev/null
+++ b/backend/api_server/src/main.rs
@@ -0,0 +1,7 @@
+mod init;
+mod logger;
+
+fn main() {
+    init::load_env();
+    let _guards = init::logger_init();
+}
diff --git a/backend/constants/Cargo.toml b/backend/constants/Cargo.toml
new file mode 100644
index 0000000..db345c7
--- /dev/null
+++ b/backend/constants/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "constants"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/backend/constants/src/blog.rs b/backend/constants/src/blog.rs
new file mode 100644
index 0000000..f0e80e6
--- /dev/null
+++ b/backend/constants/src/blog.rs
@@ -0,0 +1 @@
+pub const PAGE_SIZE: u32 = 6;
diff --git a/backend/constants/src/lib.rs b/backend/constants/src/lib.rs
new file mode 100644
index 0000000..f5cd248
--- /dev/null
+++ b/backend/constants/src/lib.rs
@@ -0,0 +1,2 @@
+pub mod blog;
+pub mod time;
diff --git a/backend/constants/src/time.rs b/backend/constants/src/time.rs
new file mode 100644
index 0000000..89e7f55
--- /dev/null
+++ b/backend/constants/src/time.rs
@@ -0,0 +1 @@
+pub const DEFAULT_TIME_FORMAT: &str = "%Y-%m-%dT%H:%M:%S%z";
diff --git a/backend/legacy/Cargo.toml b/backend/legacy/Cargo.toml
new file mode 100644
index 0000000..5d3cbd3
--- /dev/null
+++ b/backend/legacy/Cargo.toml
@@ -0,0 +1,25 @@
+[package]
+name = "backend"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+axum = "0.7.5"
+dotenv = "0.15.0"
+serde = { version = "1.0.199", features = ["derive"] }
+serde_json = "1.0.116"
+tokio = { version = "1.37.0", features = ["full"] }
+uuid = { version = "1.8.0", features = ["v4", "fast-rng", "serde"] }
+sqlx = { version = "0.7.4", features = ["runtime-tokio", "tls-native-tls", "postgres", "chrono", "uuid"] }
+chrono = { version = "0.4.38", features = ["serde", "alloc"] }
+regex = "1.10.4"
+futures = { version = "0.3.30", features = ["executor"] }
+tracing = "0.1.40"
+tracing-subscriber = "0.3.18"
+tracing-appender = "0.2.3"
+log = "0.4.21"
+sha2 = "0.10.8"
+thiserror = "1.0.63"
+base64 = "0.22.1"
diff --git a/backend/src/api/get/get_page_count.rs b/backend/legacy/src/api/get/get_page_count.rs
similarity index 100%
rename from backend/src/api/get/get_page_count.rs
rename to backend/legacy/src/api/get/get_page_count.rs
diff --git a/backend/src/api/get/get_post.rs b/backend/legacy/src/api/get/get_post.rs
similarity index 100%
rename from backend/src/api/get/get_post.rs
rename to backend/legacy/src/api/get/get_post.rs
diff --git a/backend/src/api/get/get_post_list.rs b/backend/legacy/src/api/get/get_post_list.rs
similarity index 100%
rename from backend/src/api/get/get_post_list.rs
rename to backend/legacy/src/api/get/get_post_list.rs
diff --git a/backend/src/api/get/mod.rs b/backend/legacy/src/api/get/mod.rs
similarity index 100%
rename from backend/src/api/get/mod.rs
rename to backend/legacy/src/api/get/mod.rs
diff --git a/backend/src/api/mod.rs b/backend/legacy/src/api/mod.rs
similarity index 100%
rename from backend/src/api/mod.rs
rename to backend/legacy/src/api/mod.rs
diff --git a/backend/src/api/post/errors/mod.rs b/backend/legacy/src/api/post/errors/mod.rs
similarity index 100%
rename from backend/src/api/post/errors/mod.rs
rename to backend/legacy/src/api/post/errors/mod.rs
diff --git a/backend/src/api/post/errors/refresh.rs b/backend/legacy/src/api/post/errors/refresh.rs
similarity index 100%
rename from backend/src/api/post/errors/refresh.rs
rename to backend/legacy/src/api/post/errors/refresh.rs
diff --git a/backend/src/api/post/mod.rs b/backend/legacy/src/api/post/mod.rs
similarity index 100%
rename from backend/src/api/post/mod.rs
rename to backend/legacy/src/api/post/mod.rs
diff --git a/backend/src/api/post/refresh.rs b/backend/legacy/src/api/post/refresh.rs
similarity index 100%
rename from backend/src/api/post/refresh.rs
rename to backend/legacy/src/api/post/refresh.rs
diff --git a/backend/src/api/post/utils/build_post_idx.rs b/backend/legacy/src/api/post/utils/build_post_idx.rs
similarity index 100%
rename from backend/src/api/post/utils/build_post_idx.rs
rename to backend/legacy/src/api/post/utils/build_post_idx.rs
diff --git a/backend/src/api/post/utils/mod.rs b/backend/legacy/src/api/post/utils/mod.rs
similarity index 100%
rename from backend/src/api/post/utils/mod.rs
rename to backend/legacy/src/api/post/utils/mod.rs
diff --git a/backend/src/api/post/utils/post.rs b/backend/legacy/src/api/post/utils/post.rs
similarity index 100%
rename from backend/src/api/post/utils/post.rs
rename to backend/legacy/src/api/post/utils/post.rs
diff --git a/backend/src/constants.rs b/backend/legacy/src/constants.rs
similarity index 100%
rename from backend/src/constants.rs
rename to backend/legacy/src/constants.rs
diff --git a/backend/src/logger.rs b/backend/legacy/src/logger.rs
similarity index 100%
rename from backend/src/logger.rs
rename to backend/legacy/src/logger.rs
diff --git a/backend/src/main.rs b/backend/legacy/src/main.rs
similarity index 81%
rename from backend/src/main.rs
rename to backend/legacy/src/main.rs
index eaf806d..7fef8f3 100644
--- a/backend/src/main.rs
+++ b/backend/legacy/src/main.rs
@@ -4,13 +4,12 @@ use std::num::ParseIntError;
 use std::process::exit;
 use std::str::FromStr;
 
-use crate::api::get::get_page_count::get_page_count;
-use crate::api::get::get_post::get_post;
-use crate::api::get::get_post_list::get_post_list;
-use crate::api::post::refresh::refresh;
+use crate::api::{
+    get::{get_page_count::get_page_count, get_post::get_post, get_post_list::get_post_list},
+    post::refresh::refresh,
+};
 use axum::routing::{get, post};
 use axum::Router;
-use dotenv::dotenv;
 use sqlx::postgres::{PgConnectOptions, PgPoolOptions};
 use sqlx::ConnectOptions;
 use tracing::{error, info, warn};
@@ -26,21 +25,15 @@ async fn main() -> Result<(), Box<dyn Error>> {
     if let Some(env_file) = env::args().nth(1) {
         match dotenv::from_filename(&env_file) {
             Ok(_) => {
-                println!("[Info] env loaded from {}", env_file);
+                println!("[Info] env loaded from {}, starting up", env_file);
             }
             Err(e) => {
                 panic!("[Fatal] failed to read {}: {}", env_file, e);
             }
         }
-    };
-    match dotenv() {
-        Ok(_) => {
-            println!("[Info] env loaded from .env file, starting up...")
-        }
-        Err(_) => {
-            println!("[Info] .env not detected, starting up...")
-        }
-    };
+    } else {
+        println!("[info] no .env file referred, starting up")
+    }
 
     let _guards = logger::init();
 
@@ -52,7 +45,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
         Err(_) => 3001,
     };
 
-    let db_connect_option = PgConnectOptions::from_str(dbg!(&parse_db_uri()))
+    let db_connect_option = PgConnectOptions::from_str(&parse_db_uri())
         .unwrap()
         .disable_statement_logging();
 
diff --git a/backend/src/markdown/meta.rs b/backend/legacy/src/markdown/meta.rs
similarity index 100%
rename from backend/src/markdown/meta.rs
rename to backend/legacy/src/markdown/meta.rs
diff --git a/backend/src/markdown/mod.rs b/backend/legacy/src/markdown/mod.rs
similarity index 100%
rename from backend/src/markdown/mod.rs
rename to backend/legacy/src/markdown/mod.rs
diff --git a/backend/src/model/blog/hash.sql b/backend/legacy/src/model/blog/hash.sql
similarity index 100%
rename from backend/src/model/blog/hash.sql
rename to backend/legacy/src/model/blog/hash.sql
diff --git a/backend/src/model/blog/meta.sql b/backend/legacy/src/model/blog/meta.sql
similarity index 100%
rename from backend/src/model/blog/meta.sql
rename to backend/legacy/src/model/blog/meta.sql
diff --git a/backend/src/model/blog/mod.rs b/backend/legacy/src/model/blog/mod.rs
similarity index 100%
rename from backend/src/model/blog/mod.rs
rename to backend/legacy/src/model/blog/mod.rs
diff --git a/backend/src/model/blog/post.sql b/backend/legacy/src/model/blog/post.sql
similarity index 100%
rename from backend/src/model/blog/post.sql
rename to backend/legacy/src/model/blog/post.sql
diff --git a/backend/src/model/blog/tag.sql b/backend/legacy/src/model/blog/tag.sql
similarity index 100%
rename from backend/src/model/blog/tag.sql
rename to backend/legacy/src/model/blog/tag.sql
diff --git a/backend/src/model/mod.rs b/backend/legacy/src/model/mod.rs
similarity index 100%
rename from backend/src/model/mod.rs
rename to backend/legacy/src/model/mod.rs
diff --git a/backend/markdown/Cargo.toml b/backend/markdown/Cargo.toml
new file mode 100644
index 0000000..6f30a74
--- /dev/null
+++ b/backend/markdown/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "markdown"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/backend/markdown/src/lib.rs b/backend/markdown/src/lib.rs
new file mode 100644
index 0000000..b93cf3f
--- /dev/null
+++ b/backend/markdown/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}