diff --git a/zino-core/src/model/context.rs b/zino-core/src/model/context.rs
index f82bcc10..fc427a55 100644
--- a/zino-core/src/model/context.rs
+++ b/zino-core/src/model/context.rs
@@ -26,7 +26,7 @@ impl QueryContext {
     pub fn new() -> Self {
         Self {
             start_time: Instant::now(),
-            query_id: Uuid::new_v4(),
+            query_id: Uuid::now_v7(),
             query: String::new(),
             arguments: Vec::new(),
             last_insert_id: None,
diff --git a/zino-core/src/openapi/mod.rs b/zino-core/src/openapi/mod.rs
index 12431611..727811a1 100644
--- a/zino-core/src/openapi/mod.rs
+++ b/zino-core/src/openapi/mod.rs
@@ -89,7 +89,7 @@ pub(crate) fn default_components() -> Components {
     let mut components = OPENAPI_COMPONENTS.get_or_init(Components::new).clone();
 
     // Request ID
-    let request_id_example = Uuid::new_v4();
+    let request_id_example = Uuid::now_v7();
     let request_id_schema = ObjectBuilder::new()
         .schema_type(SchemaType::String)
         .format(Some(SchemaFormat::KnownFormat(KnownFormat::Uuid)))
@@ -142,7 +142,7 @@ pub(crate) fn default_components() -> Components {
         .insert("default".to_owned(), default_response.into());
 
     // Error response
-    let model_id_example = Uuid::new_v4();
+    let model_id_example = Uuid::now_v7();
     let detail_example = format!("404 Not Found: cannot find the model `{model_id_example}`");
     let instance_example = format!("/model/{model_id_example}/view");
     let status_schema = ObjectBuilder::new()
diff --git a/zino-core/src/request/mod.rs b/zino-core/src/request/mod.rs
index 79006d29..5d8d07d6 100644
--- a/zino-core/src/request/mod.rs
+++ b/zino-core/src/request/mod.rs
@@ -95,10 +95,10 @@ pub trait RequestContext {
         let request_id = self
             .get_header("x-request-id")
             .and_then(|s| s.parse().ok())
-            .unwrap_or_else(Uuid::new_v4);
+            .unwrap_or_else(Uuid::now_v7);
         let trace_id = self
             .get_trace_context()
-            .map_or_else(Uuid::new_v4, |t| Uuid::from_u128(t.trace_id()));
+            .map_or_else(Uuid::now_v7, |t| Uuid::from_u128(t.trace_id()));
         let session_id = self
             .get_header("x-session-id")
             .or_else(|| self.get_header("session_id"))
diff --git a/zino-core/src/schedule/mod.rs b/zino-core/src/schedule/mod.rs
index 5f2fb2fb..700b4cd0 100644
--- a/zino-core/src/schedule/mod.rs
+++ b/zino-core/src/schedule/mod.rs
@@ -34,7 +34,7 @@ impl Job {
         let schedule = Schedule::from_str(cron_expr)
             .unwrap_or_else(|err| panic!("invalid cron expression `{cron_expr}`: {err}"));
         Job {
-            id: Uuid::new_v4(),
+            id: Uuid::now_v7(),
             data: Map::new(),
             schedule,
             run: ExecutableJob::Fn(exec),
@@ -48,7 +48,7 @@ impl Job {
         let schedule = Schedule::from_str(cron_expr)
             .unwrap_or_else(|err| panic!("invalid cron expression `{cron_expr}`: {err}"));
         Job {
-            id: Uuid::new_v4(),
+            id: Uuid::now_v7(),
             data: Map::new(),
             schedule,
             run: ExecutableJob::AsyncFn(exec),
diff --git a/zino-core/src/trace/trace_context.rs b/zino-core/src/trace/trace_context.rs
index 97389cc9..92c76374 100644
--- a/zino-core/src/trace/trace_context.rs
+++ b/zino-core/src/trace/trace_context.rs
@@ -37,7 +37,7 @@ impl TraceContext {
         Self {
             span_id,
             version: 0,
-            trace_id: Uuid::new_v4().as_u128(),
+            trace_id: Uuid::now_v7().as_u128(),
             parent_id: None,
             trace_flags: FLAG_SAMPLED | FLAG_RANDOM_TRACE_ID,
             trace_state: TraceState::new(),
diff --git a/zino-core/src/validation/mod.rs b/zino-core/src/validation/mod.rs
index 19869738..f2397d63 100644
--- a/zino-core/src/validation/mod.rs
+++ b/zino-core/src/validation/mod.rs
@@ -4,8 +4,9 @@ use crate::{error::Error, extension::JsonObjectExt, Map, SharedString};
 mod validator;
 
 pub use validator::{
-    DateTimeValidator, DateValidator, EmailValidator, Ipv4AddrValidator, Ipv6AddrValidator,
-    TimeValidator, UriValidator, UuidValidator, Validator,
+    DateTimeValidator, DateValidator, EmailValidator, HostValidator, HostnameValidator,
+    IpAddrValidator, Ipv4AddrValidator, Ipv6AddrValidator, TimeValidator, UriValidator,
+    UuidValidator, Validator,
 };
 
 /// A record of validation results.
@@ -60,6 +61,21 @@ impl Validation {
                     self.record_fail(key, err);
                 }
             }
+            "host" => {
+                if let Err(err) = HostValidator.validate(value) {
+                    self.record_fail(key, err);
+                }
+            }
+            "hostname" => {
+                if let Err(err) = HostnameValidator.validate(value) {
+                    self.record_fail(key, err);
+                }
+            }
+            "ip" => {
+                if let Err(err) = IpAddrValidator.validate(value) {
+                    self.record_fail(key, err);
+                }
+            }
             "ipv4" => {
                 if let Err(err) = Ipv4AddrValidator.validate(value) {
                     self.record_fail(key, err);
diff --git a/zino-core/src/validation/validator/email.rs b/zino-core/src/validation/validator/email.rs
index 458e98dd..3d93d394 100644
--- a/zino-core/src/validation/validator/email.rs
+++ b/zino-core/src/validation/validator/email.rs
@@ -3,11 +3,11 @@ use super::Validator;
 use regex::Regex;
 use std::{fmt, net::IpAddr, str::FromStr, sync::LazyLock};
 
-/// A validator for email address.
+/// A validator for the email address.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct EmailValidator;
 
-/// An error for email address validation.
+/// An error for the email address validation.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum InvalidEmail {
     /// The value is empty.
diff --git a/zino-core/src/validation/validator/host.rs b/zino-core/src/validation/validator/host.rs
new file mode 100644
index 00000000..415aa133
--- /dev/null
+++ b/zino-core/src/validation/validator/host.rs
@@ -0,0 +1,49 @@
+use self::InvalidHost::*;
+use super::Validator;
+use std::{fmt, num::ParseIntError};
+use url::{Host, ParseError};
+
+/// A validator for the host of a URL.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct HostValidator;
+
+/// An error for the host validation.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum InvalidHost {
+    /// Invalid port.
+    InvalidPort(ParseIntError),
+    /// Invalid hostname.
+    InvalidHostname(ParseError),
+}
+
+impl fmt::Display for InvalidHost {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            InvalidPort(err) => write!(f, "invalid port: {err}"),
+            InvalidHostname(err) => write!(f, "invalid hostname: {err}"),
+        }
+    }
+}
+
+impl std::error::Error for InvalidHost {}
+
+impl Validator<str> for HostValidator {
+    type Error = InvalidHost;
+
+    #[inline]
+    fn validate(&self, data: &str) -> Result<(), Self::Error> {
+        if let Some((hostname, port)) = data.rsplit_once(':') {
+            if let Err(err) = port.parse::<u16>() {
+                Err(InvalidPort(err))
+            } else if let Err(err) = Host::parse(hostname) {
+                Err(InvalidHostname(err))
+            } else {
+                Ok(())
+            }
+        } else if let Err(err) = Host::parse(data) {
+            Err(InvalidHostname(err))
+        } else {
+            Ok(())
+        }
+    }
+}
diff --git a/zino-core/src/validation/validator/hostname.rs b/zino-core/src/validation/validator/hostname.rs
new file mode 100644
index 00000000..2ad6f220
--- /dev/null
+++ b/zino-core/src/validation/validator/hostname.rs
@@ -0,0 +1,16 @@
+use super::Validator;
+use url::{Host, ParseError};
+
+/// A validator for the hostname of a URL.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct HostnameValidator;
+
+impl Validator<str> for HostnameValidator {
+    type Error = ParseError;
+
+    #[inline]
+    fn validate(&self, data: &str) -> Result<(), Self::Error> {
+        Host::parse(data)?;
+        Ok(())
+    }
+}
diff --git a/zino-core/src/validation/validator/ip_addr.rs b/zino-core/src/validation/validator/ip_addr.rs
new file mode 100644
index 00000000..fa140a53
--- /dev/null
+++ b/zino-core/src/validation/validator/ip_addr.rs
@@ -0,0 +1,19 @@
+use super::Validator;
+use std::{
+    net::{AddrParseError, IpAddr},
+    str::FromStr,
+};
+
+/// A validator for [`IpAddr`].
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct IpAddrValidator;
+
+impl Validator<str> for IpAddrValidator {
+    type Error = AddrParseError;
+
+    #[inline]
+    fn validate(&self, data: &str) -> Result<(), Self::Error> {
+        IpAddr::from_str(data)?;
+        Ok(())
+    }
+}
diff --git a/zino-core/src/validation/validator/mod.rs b/zino-core/src/validation/validator/mod.rs
index 75f339a3..38f83a01 100644
--- a/zino-core/src/validation/validator/mod.rs
+++ b/zino-core/src/validation/validator/mod.rs
@@ -3,6 +3,9 @@
 mod date;
 mod date_time;
 mod email;
+mod host;
+mod hostname;
+mod ip_addr;
 mod ipv4_addr;
 mod ipv6_addr;
 mod time;
@@ -12,6 +15,9 @@ mod uuid;
 pub use date::DateValidator;
 pub use date_time::DateTimeValidator;
 pub use email::EmailValidator;
+pub use host::HostValidator;
+pub use hostname::HostnameValidator;
+pub use ip_addr::IpAddrValidator;
 pub use ipv4_addr::Ipv4AddrValidator;
 pub use ipv6_addr::Ipv6AddrValidator;
 pub use time::TimeValidator;
diff --git a/zino-derive/docs/model_accessor.md b/zino-derive/docs/model_accessor.md
index 626edbb1..813b7723 100644
--- a/zino-derive/docs/model_accessor.md
+++ b/zino-derive/docs/model_accessor.md
@@ -33,7 +33,8 @@ Derives the [`ModelAccessor`](zino_core::orm::ModelAccessor) trait.
 
 - **`#[schema(format = "format")]`**: The `format` attribute specifies
   the format for a `String` value. Supported values: **`date`** | **`date-time`**
-  | **`email`** | **`ipv4`** | **`ipv6`** | **`time`** | **`uri`** | **`uuid`**.
+  | **`email`** | **`host`** | **`hostname`** | **`ip`** | **`ipv4`** | **`ipv6`**
+  | **`time`** | **`uri`** | **`uuid`**.
 
 
 - **`#[schema(length = N)]`**: The `length` attribute specifies
diff --git a/zino-derive/docs/schema.md b/zino-derive/docs/schema.md
index 5e6e3779..9b7e163b 100644
--- a/zino-derive/docs/schema.md
+++ b/zino-derive/docs/schema.md
@@ -26,11 +26,14 @@ Derives the [`Schema`](zino_core::orm::Schema) trait.
 - **`#[schema(ignore)]`**: The `ignore` annotation is used to skip a particular field
   such that it maps to no database column.
 
+- **`#[schema(type_name = "name")]`**: The `type_name` attribute is used to
+  override the Rust data type of the column.
+
 - **`#[schema(column_name = "name")]`**: All column names are assumed to be in **snake-case**.
   You can override the it by specifying the `column_name` attribute.
 
 - **`#[schema(column_type = "type")]`**: The column type is derived automatically
-  from the mappings of Rust primitive data types for different database drivers.
+  from the mappings of Rust data types for different database drivers.
   You can override the it by specifying the `column_type` attribute.
 
 - **`#[schema(length = N)]`**: The `length` attribute specifies
diff --git a/zino-derive/src/lib.rs b/zino-derive/src/lib.rs
index 672bef5c..5d798121 100644
--- a/zino-derive/src/lib.rs
+++ b/zino-derive/src/lib.rs
@@ -20,8 +20,9 @@ pub fn derive_schema(item: TokenStream) -> TokenStream {
     ];
 
     // Special attributes
-    const SPECIAL_ATTRIBUTES: [&str; 7] = [
+    const SPECIAL_ATTRIBUTES: [&str; 8] = [
         "ignore",
+        "type_name",
         "not_null",
         "default_value",
         "index_type",
@@ -83,7 +84,7 @@ pub fn derive_schema(item: TokenStream) -> TokenStream {
         && let Fields::Named(fields) = data.fields
     {
         for field in fields.named.into_iter() {
-            let type_name = parser::get_type_name(&field.ty);
+            let mut type_name = parser::get_type_name(&field.ty);
             if let Some(ident) = field.ident
                 && !type_name.is_empty()
             {
@@ -124,6 +125,11 @@ pub fn derive_schema(item: TokenStream) -> TokenStream {
                                 ignore = true;
                                 break 'inner;
                             }
+                            "type_name" => {
+                                if let Some(value) = value {
+                                    type_name = value;
+                                }
+                            }
                             "column_type" => {
                                 column_type = value;
                             }
diff --git a/zino-model/src/user/mod.rs b/zino-model/src/user/mod.rs
index c96ee297..561674c2 100644
--- a/zino-model/src/user/mod.rs
+++ b/zino-model/src/user/mod.rs
@@ -44,10 +44,10 @@ pub struct User {
     #[schema(default_value = "User::model_namespace", index_type = "hash")]
     namespace: String,
     #[cfg(feature = "visibility")]
-    #[schema(column_type = "String", default_value = "UserVisibility::default")]
+    #[schema(type_name = "String", default_value = "UserVisibility::default")]
     visibility: UserVisibility,
     #[schema(
-        column_type = "String",
+        type_name = "String",
         default_value = "UserStatus::default",
         index_type = "hash"
     )]
diff --git a/zino/src/channel/axum_channel.rs b/zino/src/channel/axum_channel.rs
index c52b47e3..4fe1a5f8 100644
--- a/zino/src/channel/axum_channel.rs
+++ b/zino/src/channel/axum_channel.rs
@@ -63,7 +63,7 @@ impl MessageChannel {
     /// Creates a new `MessageChannel`.
     pub fn new() -> Self {
         let (sender, receiver) = mpsc::channel(CHANNEL_CAPACITY.load(Relaxed));
-        let sender_id = Uuid::new_v4();
+        let sender_id = Uuid::now_v7();
         let subscriber = Subscriber::new(sender, None);
         let mut senders = CHANNEL_SUBSCRIBERS.write();
         senders.retain(|_, subscriber| !subscriber.emitter().is_closed());