> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kinetica.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HaSynchronicityMode

> HaSynchronicityMode — Kinetica Rust API

[gpudb\_api](https://docs.kinetica.com/content/api/rust/index.md)::<wbr />[gpudb](https://docs.kinetica.com/content/api/rust/gpudb/index.md)
[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L78-L92)&#x20;

<pre>`pub enum HaSynchronicityMode {    Default,    None,    Synchronous,    SynchronousParallel,    Asynchronous,    AsynchronousParallel,}`</pre>

The high availability synchronicity override sent with each request. Anything but `Default` is sent as the `X-Kinetica-Group` header.

## Variants

### Default

No override; the HA process decides which endpoints are synchronous.

### None

Do not replicate the endpoint calls.

### Synchronous

Execute the query locally, then send it to each cluster in turn.

### SynchronousParallel

Send the query to each cluster and execute it locally, at once.

### Asynchronous

Execute the query locally, then queue it for each cluster.

### AsynchronousParallel

Queue the query for each cluster and execute it locally, at once.

## Implementations

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L94-L148)
impl [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L96-L103)
pub const [ALL](#associatedconstant.ALL): \[[HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md); [6](https://doc.rust-lang.org/1.98.1/std/primitive.array.html)]

Every mode; [`Self::mode`](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode#method.mode) gives each one’s name as the server takes it.

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L106-L115)
pub fn [mode](#method.mode)(\&self) -> &'static [str](https://doc.rust-lang.org/1.98.1/std/primitive.str.html)

The mode as the server names it.

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L131-L137)
pub fn [from\_value](#method.from_value)(value: &[str](https://doc.rust-lang.org/1.98.1/std/primitive.str.html)) -> [Option](https://doc.rust-lang.org/1.98.1/core/option/enum.Option.html)\<Self>

The mode named by `value`, in any case, as a mode, as a constant name, or as a mode without its `REPL_` prefix.

## Trait Implementations

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [Clone](https://doc.rust-lang.org/1.98.1/core/clone/trait.Clone.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
fn [clone](https://doc.rust-lang.org/1.98.1/core/clone/trait.Clone.html#tymethod.clone)(\&self) -> [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

Returns a duplicate of the value. [Read more](https://doc.rust-lang.org/1.98.1/core/clone/trait.Clone.html#tymethod.clone)

1.0.0 (const: [unstable](https://github.com/rust-lang/rust/issues/142757)) · [Source](https://doc.rust-lang.org/1.98.1/src/core/clone.rs.html#245-247)
fn [clone\_from](https://doc.rust-lang.org/1.98.1/core/clone/trait.Clone.html#method.clone_from)(\&mut self, source: \&Self)

Performs copy-assignment from `source`. [Read more](https://doc.rust-lang.org/1.98.1/core/clone/trait.Clone.html#method.clone_from)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [Copy](https://doc.rust-lang.org/1.98.1/core/marker/trait.Copy.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [Debug](https://doc.rust-lang.org/1.98.1/core/fmt/trait.Debug.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
fn [fmt](https://doc.rust-lang.org/1.98.1/core/fmt/trait.Debug.html#tymethod.fmt)(\&self, f: \&mut [Formatter](https://doc.rust-lang.org/1.98.1/core/fmt/struct.Formatter.html)\<'\_>) -> [Result](https://doc.rust-lang.org/1.98.1/core/fmt/type.Result.html)

Formats the value using the given formatter. [Read more](https://doc.rust-lang.org/1.98.1/core/fmt/trait.Debug.html#tymethod.fmt)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [Default](https://doc.rust-lang.org/1.98.1/core/default/trait.Default.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
fn [default](https://doc.rust-lang.org/1.98.1/core/default/trait.Default.html#tymethod.default)() -> [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

Returns the “default value” for a type. [Read more](https://doc.rust-lang.org/1.98.1/core/default/trait.Default.html#tymethod.default)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [Eq](https://doc.rust-lang.org/1.98.1/core/cmp/trait.Eq.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [PartialEq](https://doc.rust-lang.org/1.98.1/core/cmp/trait.PartialEq.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
fn [eq](https://doc.rust-lang.org/1.98.1/core/cmp/trait.PartialEq.html#tymethod.eq)(\&self, other: &[HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)) -> [bool](https://doc.rust-lang.org/1.98.1/std/primitive.bool.html)

Tests for `self` and `other` values to be equal, and is used by `==`.

1.0.0 (const: [unstable](https://github.com/rust-lang/rust/issues/143800)) · [Source](https://doc.rust-lang.org/1.98.1/src/core/cmp.rs.html#263)
fn [ne](https://doc.rust-lang.org/1.98.1/core/cmp/trait.PartialEq.html#method.ne)(\&self, other: [\&Rhs](https://doc.rust-lang.org/1.98.1/std/primitive.reference.html)) -> [bool](https://doc.rust-lang.org/1.98.1/std/primitive.bool.html)

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.

[Source](https://github.com/kineticadb/kinetica-api-rust/blob/master/crates/gpudb-api/src/gpudb.rs#L77)
impl [StructuralPartialEq](https://doc.rust-lang.org/1.98.1/core/marker/trait.StructuralPartialEq.html) for [HaSynchronicityMode](https://docs.kinetica.com/content/api/rust/gpudb/enum.HaSynchronicityMode.md)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.