diff --git a/Cargo.lock b/Cargo.lock
index fd2198e..771ccaf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -542,6 +542,28 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "chrono-tz"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "efdce149c370f133a071ca8ef6ea340b7b88748ab0810097a9e2976eaa34b4f3"
+dependencies = [
+ "chrono",
+ "chrono-tz-build",
+ "phf",
+ "serde",
+]
+
+[[package]]
+name = "chrono-tz-build"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f10f8c9340e31fc120ff885fcdb54a0b48e474bbd77cab557f0c30a3e569402"
+dependencies = [
+ "parse-zoneinfo",
+ "phf_codegen",
+]
+
 [[package]]
 name = "clap"
 version = "4.5.37"
@@ -795,9 +817,12 @@ dependencies = [
 name = "dpts-config"
 version = "0.1.0"
 dependencies = [
+ "chrono-tz",
  "dpts-entity",
  "dpts-error",
+ "iana-time-zone",
  "serde",
+ "thiserror 2.0.12",
  "tokio",
  "toml",
 ]
@@ -821,6 +846,7 @@ dependencies = [
  "axum",
  "chrono",
  "dotenv",
+ "dpts-config",
  "dpts-entity",
  "dpts-migration",
  "log",
@@ -1895,6 +1921,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "parse-zoneinfo"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f2a05b18d44e2957b88f96ba460715e295bc1d7510468a2f3d3b44535d26c24"
+dependencies = [
+ "regex",
+]
+
 [[package]]
 name = "pem-rfc7468"
 version = "0.7.0"
@@ -1955,6 +1990,44 @@ dependencies = [
  "sha2",
 ]
 
+[[package]]
+name = "phf"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd6780a80ae0c52cc120a26a1a42c1ae51b247a253e4e06113d23d2c2edd078"
+dependencies = [
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_codegen"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aef8048c789fa5e851558d709946d6d79a8ff88c0440c587967f8e94bfb1216a"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+dependencies = [
+ "phf_shared",
+ "rand",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+dependencies = [
+ "siphasher",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.16"
@@ -2580,6 +2653,12 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "siphasher"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
+
 [[package]]
 name = "slab"
 version = "0.4.9"
diff --git a/Cargo.toml b/Cargo.toml
index 4457dd9..e292f05 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,9 +25,11 @@ dpts-entity = { path = "dpts-entity" }
 dpts-error = { path = "dpts-error" }
 dpts-migration = {path = "dpts-migration"}
 chrono = {version = "0.4", features = ["serde"]}
+chrono-tz = {version = "0.10.3", features = ["serde"]}
 clap = "4.5"
 dotenv = "0.15.0"
 serde = { version = "1.0", features = ["derive"] }
+thiserror = "2.0.12"
 tokio = "1.44.2"
 toml = "0.8.22"
 
diff --git a/dpts-config/Cargo.toml b/dpts-config/Cargo.toml
index b70c6eb..c30c131 100644
--- a/dpts-config/Cargo.toml
+++ b/dpts-config/Cargo.toml
@@ -9,10 +9,14 @@ repository.workspace = true
 default = ["client", "server"]
 client = []
 server = []
+test = []
 
 [dependencies]
+chrono-tz.workspace = true
 dpts-entity.workspace = true
 dpts-error.workspace = true
+iana-time-zone = "0.1.63"
 serde.workspace = true
+thiserror.workspace = true
 tokio.workspace = true
 toml.workspace = true
diff --git a/dpts-config/src/client.rs b/dpts-config/src/client.rs
index e69de29..5bab7f9 100644
--- a/dpts-config/src/client.rs
+++ b/dpts-config/src/client.rs
@@ -0,0 +1,87 @@
+mod storage;
+
+pub use storage::*;
+
+use serde::{
+    Deserialize,
+    Serialize
+};
+
+use chrono_tz::{Tz, UTC};
+use crate::{get_host_time_zone_or_utc, Error};
+use std::{
+    str::FromStr,
+    net::IpAddr
+};
+
+
+
+pub struct ClientConfig {
+    
+}
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+pub struct PartialClientConfig {
+    time_zone: Option<Tz>,
+    storage: Option<PartialClientStorageConfig>,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tokio::sync::OnceCell;
+    use std::path::PathBuf;
+    const EMPTY_CONFIG_TOML: &str = r#""#;
+    static EMPTY_CONFIG_STRUCT: OnceCell<PartialClientConfig> = OnceCell::const_new();
+    
+    async fn get_empty_config_struct() -> &'static PartialClientConfig {
+        EMPTY_CONFIG_STRUCT.get_or_init(|| async {
+            PartialClientConfig{
+                time_zone: None,
+                storage: None,
+            }
+        }).await
+
+    }
+
+    #[tokio::test]
+    async fn deserialize_empty_client_config() {
+        let config: PartialClientConfig = toml::from_str(EMPTY_CONFIG_TOML).unwrap();
+        assert_eq!(&config, get_empty_config_struct().await);
+    }
+
+    #[tokio::test]
+    async fn serialize_empty_client_config() {
+        assert_eq!(EMPTY_CONFIG_TOML, toml::to_string(get_empty_config_struct().await).unwrap());
+    }
+
+    const LOCAL_STORAGE_CONFIG_TOML: &str = r#"time_zone = "UTC"
+
+[storage.local]
+database_path = "."
+"#;
+    static LOCAL_STORAGE_CONFIG_STRUCT: OnceCell<PartialClientConfig> = OnceCell::const_new();
+    
+    async fn get_local_storage_client_config_struct() -> &'static PartialClientConfig {
+        LOCAL_STORAGE_CONFIG_STRUCT.get_or_init(|| async {
+            PartialClientConfig{
+                time_zone: Some(UTC),
+                storage: Some(PartialClientStorageConfig::Local(
+                    PartialClientLocalStorageConfig {
+                        database_path: Some(PathBuf::from_str(".").unwrap()),
+                    }
+                )),  
+            }
+        }).await
+    }
+    #[tokio::test]
+    async fn deserialize_local_storage_client_config() {
+        let config: PartialClientConfig = toml::from_str(LOCAL_STORAGE_CONFIG_TOML).unwrap();
+        assert_eq!(&config, get_local_storage_client_config_struct().await);
+    }
+
+    #[tokio::test]
+    async fn serialize_local_storage_client_config() {
+        assert_eq!(LOCAL_STORAGE_CONFIG_TOML, toml::to_string(get_local_storage_client_config_struct().await).unwrap());
+    }
+}
+
diff --git a/dpts-config/src/client/storage.rs b/dpts-config/src/client/storage.rs
new file mode 100644
index 0000000..5b991ab
--- /dev/null
+++ b/dpts-config/src/client/storage.rs
@@ -0,0 +1,29 @@
+mod local;
+mod remote;
+
+pub use local::{
+    ClientLocalStorageConfig,
+    PartialClientLocalStorageConfig,
+};
+
+pub use remote::{
+    ClientRemoteStorageConfig,
+    PartialClientRemoteStorageConfig,
+};
+
+use serde::{
+    Deserialize,
+    Serialize
+};
+
+pub enum ClientStorageConfig {
+    Local(ClientLocalStorageConfig),
+    Remote(ClientRemoteStorageConfig),
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum PartialClientStorageConfig {
+    Local(PartialClientLocalStorageConfig),
+    Remote(PartialClientRemoteStorageConfig),
+}
\ No newline at end of file
diff --git a/dpts-config/src/client/storage/local.rs b/dpts-config/src/client/storage/local.rs
new file mode 100644
index 0000000..ebcf729
--- /dev/null
+++ b/dpts-config/src/client/storage/local.rs
@@ -0,0 +1,15 @@
+use std::path::PathBuf;
+use serde::{
+    Deserialize,
+    Serialize
+};
+
+pub struct ClientLocalStorageConfig {
+    pub database_path: PathBuf
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+pub struct PartialClientLocalStorageConfig {
+    pub database_path: Option<PathBuf>,
+}
+
diff --git a/dpts-config/src/client/storage/remote.rs b/dpts-config/src/client/storage/remote.rs
new file mode 100644
index 0000000..c7c13b2
--- /dev/null
+++ b/dpts-config/src/client/storage/remote.rs
@@ -0,0 +1,22 @@
+use chrono_tz::{Tz, UTC};
+use crate::{get_host_time_zone_or_utc, Error};
+use serde::{
+    Deserialize,
+    Serialize
+};
+
+use std::{
+    str::FromStr,
+    net::IpAddr
+};
+
+pub struct ClientRemoteStorageConfig {
+    pub endpoint: String,
+    pub access_key: String,
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+pub struct PartialClientRemoteStorageConfig {
+    pub endpoint: Option<String>,
+    pub access_key: Option<String>,
+}
\ No newline at end of file
diff --git a/dpts-config/src/error.rs b/dpts-config/src/error.rs
new file mode 100644
index 0000000..acc3400
--- /dev/null
+++ b/dpts-config/src/error.rs
@@ -0,0 +1,8 @@
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("Parse toml error")]
+    TomlDe(#[from] toml::de::Error),
+    #[error("Missing config value: ({0})")]
+    MissingConfig(String)
+
+}
diff --git a/dpts-config/src/lib.rs b/dpts-config/src/lib.rs
index 43d2a5d..469b4c3 100644
--- a/dpts-config/src/lib.rs
+++ b/dpts-config/src/lib.rs
@@ -1,9 +1,28 @@
 mod client;
-mod global;
+mod error;
 mod server;
 mod user;
 
+pub use error::Error;
 pub use server::{
     ServerConfig,
     PartialServerConfig,
-};
\ No newline at end of file
+    SERVER_CONFIG,
+};
+
+pub use client::{
+    ClientConfig,
+    PartialClientConfig,
+};
+
+use chrono_tz::{Tz, UTC};
+
+fn get_host_time_zone_or_utc() -> Tz {
+    match iana_time_zone::get_timezone() {
+        Ok(x) => match x.parse(){
+            Ok(x) => x,
+            Err(_) => UTC
+        },
+        Err(_) => UTC
+    }   
+}
\ No newline at end of file
diff --git a/dpts-config/src/server.rs b/dpts-config/src/server.rs
index f21c088..113a0dd 100644
--- a/dpts-config/src/server.rs
+++ b/dpts-config/src/server.rs
@@ -1,37 +1,114 @@
-use dpts_error::Error;
-use serde::{Deserialize, Serialize};
+use chrono_tz::{Tz, UTC};
+use crate::{get_host_time_zone_or_utc, Error};
+use serde::Deserialize;
+use std::{
+    str::FromStr,
+    net::IpAddr
+};
+use tokio::sync::OnceCell;
+
+pub static SERVER_CONFIG: OnceServerConfig = OnceServerConfig::const_new();
 
 #[derive(Deserialize)]
 pub struct ServerConfig {
-    pub listen_ips: Vec<String>,
+    pub listen_ips: Vec<IpAddr>,
     pub port: u16,
-    pub database_url: String
+    pub database_url: String,
+    pub time_zone: Tz,
+}
+
+impl ServerConfig {
+
+}
+
+impl TryFrom<PartialServerConfig> for ServerConfig {
+    type Error = Error;
+    fn try_from(p: PartialServerConfig) -> Result<ServerConfig, Error>{
+        Ok(ServerConfig{
+            listen_ips: p.listen_ips.ok_or(Error::MissingConfig("listen_ips".to_string()))?,
+            port: p.port.ok_or(Error::MissingConfig("port".to_string()))?,
+            database_url: p.database_url.ok_or(Error::MissingConfig("database_url".to_string()))?,
+            time_zone: p.time_zone.ok_or(Error::MissingConfig("time_zone".to_string()))?,
+        })
+    }
+}
+
+pub struct OnceServerConfig {
+    inner: OnceCell<ServerConfig>,
+}
+
+impl OnceServerConfig {
+    const fn const_new() -> Self {
+        Self {
+            inner: OnceCell::const_new(),
+        }
+    }
+    pub fn get(&self) -> Option<&ServerConfig> {
+        self.inner.get()
+    }
+    pub async fn get_or_init<F, T>(&self, f: F) -> &ServerConfig where 
+    F: FnOnce() -> T,
+    T: Future<Output = ServerConfig> 
+    {
+        self.inner.get_or_init(f).await
+    }
 }
 
 #[derive(Deserialize)]
 
 pub struct PartialServerConfig {
-    pub listen_ips: Option<Vec<String>>,
+    pub listen_ips: Option<Vec<IpAddr>>,
     pub port: Option<u16>,
     pub database_url: Option<String>,
+    pub time_zone: Option<Tz>,
 }
 
 impl PartialServerConfig {
-    /// #Examples
-    /// ```
-    /// use dpts_config::PartialServerConfig;
-    /// let config = PartialServerConfig::try_from_toml(r#"
-    /// listen_ips = ["0.0.0.0"]
-    /// port = 8000
-    /// database_url = "sqlite::memory:"
-    /// "#).unwrap();
-    /// assert_eq!(config.listen_ips, Some(vec!["0.0.0.0".to_string()]));
-    /// assert_eq!(config.port, Some(8000));
-    /// assert_eq!(config.database_url,  Some("sqlite::memory:".to_string()));
-    /// ```
-    /// 
+   
     pub fn try_from_toml(s: &str) -> Result<Self, Error> {
         Ok(toml::from_str(s)?)
     }
 }
 
+impl Default for PartialServerConfig {
+    /// #Examples
+    /// ```
+    /// use dpts_config::PartialServerConfig;
+    /// let config = PartialServerConfig::default();
+    /// assert_eq!(config.listen_ips, Some(vec!["127.0.0.1".parse().unwrap(), "::1".parse().unwrap()]));
+    /// assert_eq!(config.port, Some(3000));
+    /// assert_eq!(config.database_url,  None);
+    /// assert_eq!(config.time_zone, Some(iana_time_zone::get_timezone().unwrap().parse().unwrap()))
+    /// ```
+    /// 
+    fn default() -> Self {
+        PartialServerConfig {
+            listen_ips: Some(vec!["127.0.0.1".parse().unwrap(), "::1".parse().unwrap()]),
+            port: Some(3000),
+            database_url: None,
+            time_zone: Some(get_host_time_zone_or_utc())
+        }
+    }
+}
+
+impl FromStr for PartialServerConfig {
+    type Err = Error;
+    /// #Examples
+    /// ```
+    /// use dpts_config::PartialServerConfig;
+    /// let config: PartialServerConfig = r#"
+    /// listen_ips = ["0.0.0.0"]
+    /// port = 8000
+    /// database_url = "sqlite::memory:"
+    /// time_zone = "Asia/Tokyo"
+    /// "#.parse().unwrap();
+    /// assert_eq!(config.listen_ips, Some(vec!["0.0.0.0".parse().unwrap()]));
+    /// assert_eq!(config.port, Some(8000));
+    /// assert_eq!(config.database_url,  Some("sqlite::memory:".to_string()));
+    /// assert_eq!(config.time_zone, Some("Asia/Tokyo".parse().unwrap()))
+    /// ```
+    /// 
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Ok(toml::from_str(s)?)
+    }
+}
diff --git a/dpts-database/Cargo.toml b/dpts-database/Cargo.toml
index 89627de..14b9fe6 100644
--- a/dpts-database/Cargo.toml
+++ b/dpts-database/Cargo.toml
@@ -6,10 +6,13 @@ license.workspace = true
 repository.workspace = true
 
 [features]
-default = []
+default = ["server", "client"]
+client = []
+server = []
 test = []
 
 [dependencies]
+dpts-config.workspace = true
 dpts-entity = { workspace = true }
 dpts-migration = { workspace = true }
 async-graphql = {version = "7.0", features = ["chrono"]}
@@ -28,4 +31,7 @@ features = [
     "sqlx-sqlite",
     "with-chrono",
 ]
-default-features = false
\ No newline at end of file
+default-features = false
+
+[dev-dependencies]
+dpts-config = { workspace = true, features = ["test"] }
\ No newline at end of file
diff --git a/dpts-database/src/connection.rs b/dpts-database/src/connection.rs
index 1688316..96b8c07 100644
--- a/dpts-database/src/connection.rs
+++ b/dpts-database/src/connection.rs
@@ -1,7 +1,7 @@
 use std::time::Duration;
 use sea_orm::{entity::*, query::*, ConnectOptions, Database, DatabaseConnection};
 use dpts_migration::{Migrator, MigratorTrait};
-
+use dpts_config::ServerConfig;
 
 use tokio::sync::OnceCell;
 
@@ -25,6 +25,27 @@ impl OnceDatabaseConnection {
         self.inner.get_or_init(f).await
     }
 
+    pub async fn get_or_init_with_server_config(&self, c: &ServerConfig) -> &DatabaseConnection {
+        self.get_or_init( || async {
+            let mut opt = ConnectOptions::new(&c.database_url);
+            opt.max_connections(100)
+                .min_connections(5)
+                .connect_timeout(Duration::from_secs(8))
+                .acquire_timeout(Duration::from_secs(8))
+                .idle_timeout(Duration::from_secs(8))
+                .max_lifetime(Duration::from_secs(8))
+                .sqlx_logging(true)
+                .sqlx_logging_level(log::LevelFilter::Info);
+                //.set_schema_search_path("my_schema"); // Setting default PostgreSQL schema
+            let db = Database::connect(opt).await.unwrap();
+            Migrator::fresh(&db).await.unwrap();
+            db
+        }).await
+    }
+    pub async fn get_or_init_with_static_server_config(&self) -> &DatabaseConnection {
+        self.get_or_init_with_server_config(dpts_config::SERVER_CONFIG.get().unwrap()).await
+    }
+
     #[cfg(test)]
     pub async fn init_test(&self)  {
         self.get_or_init( || async {
@@ -47,6 +68,7 @@ impl OnceDatabaseConnection {
 
 }
 
+
 pub static DATABASE_CONNECTION: OnceDatabaseConnection = OnceDatabaseConnection::new();
 
 #[cfg(test)]
diff --git a/dpts-config/src/global.rs b/dpts-error/src/config.rs
similarity index 100%
rename from dpts-config/src/global.rs
rename to dpts-error/src/config.rs
diff --git a/dpts-error/src/lib.rs b/dpts-error/src/lib.rs
index 0b889bc..b99e6ee 100644
--- a/dpts-error/src/lib.rs
+++ b/dpts-error/src/lib.rs
@@ -3,11 +3,14 @@ pub enum Error {
     #[error("Parser error")]
     Clap(#[from] clap::Error),
     #[error("Parse int error")]
-    ParseIntError(#[from] std::num::ParseIntError),
+    ParseInt(#[from] std::num::ParseIntError),
     #[error("IO Error")]
-    IoError(#[from] std::io::Error),
+    Io(#[from] std::io::Error),
     #[error("Parse toml error")]
     TomlDe(#[from] toml::de::Error),
+    #[error("Missing config value: ({0})")]
+    MissingConfig(String)
+
 }
 
 impl Error {