---
name: MemoryStoreService
last_updated: 2026-06-10T23:09:12Z
inherits:
  - Instance
  - Object
type: class
memory_category: Instances
tags:
  - Service
summary: "Exposes methods to access specific primitives within MemoryStore."
---

# Class: MemoryStoreService

> Exposes methods to access specific primitives within MemoryStore.

## Description

A top-level singleton class which exposes methods to access specific
primitives within the MemoryStoreService. Use it for any data that rapidly
changes that other servers can restore, such as global leaderboards,
matchmaking queues, and auction houses.

For a more in-depth look, see
[Memory Stores](/docs/en-us/cloud-services/memory-stores.md). For the
limits and quotas of the service, see
[Limits and Quotas](/docs/en-us/cloud-services/memory-stores.md#limits-and-quotas).

## Methods

### Method: MemoryStoreService:GetHashMap

**Signature:** `MemoryStoreService:GetHashMap(name: string): MemoryStoreHashMap`

Returns a [MemoryStoreHashMap](/docs/reference/engine/classes/MemoryStoreHashMap.md) instance for the provided name. The
name is global within the game, so any place that uses the same name
accesses the same hash map.

*Security: None · Thread Safety: Unsafe · Capabilities: DataStore*

**Parameters:**

| Name | Type | Default | Description |
|------|------|---------|-------------|
| `name` | `string` |  | The name of the hash map. |

**Returns:** `MemoryStoreHashMap` — A [MemoryStoreHashMap](/docs/reference/engine/classes/MemoryStoreHashMap.md) instance for the provided name.

### Method: MemoryStoreService:GetQueue

**Signature:** `MemoryStoreService:GetQueue(name: string, invisibilityTimeout?: int): MemoryStoreQueue`

Returns a [MemoryStoreQueue](/docs/reference/engine/classes/MemoryStoreQueue.md) instance for the provided name. The
name is global within the game, thus any place that uses the same name
accesses the same queue.

*Security: None · Thread Safety: Unsafe · Capabilities: DataStore*

**Parameters:**

| Name | Type | Default | Description |
|------|------|---------|-------------|
| `name` | `string` |  | Name of the queue. |
| `invisibilityTimeout` | `int` | `30` | **(Optional)** Invisibility timeout, in seconds, for read operations through this queue instance. If not provided, defaults to 30 seconds. |

**Returns:** `MemoryStoreQueue` — A [MemoryStoreQueue](/docs/reference/engine/classes/MemoryStoreQueue.md) instance for the provided name.

### Method: MemoryStoreService:GetSortedMap

**Signature:** `MemoryStoreService:GetSortedMap(name: string): MemoryStoreSortedMap`

Returns a [MemoryStoreSortedMap](/docs/reference/engine/classes/MemoryStoreSortedMap.md) instance for the provided name. The
name is global within the game, so any place that uses the same name
accesses the same sorted map.

*Security: None · Thread Safety: Unsafe · Capabilities: DataStore*

**Parameters:**

| Name | Type | Default | Description |
|------|------|---------|-------------|
| `name` | `string` |  | Name of the sorted map. |

**Returns:** `MemoryStoreSortedMap` — A [MemoryStoreSortedMap](/docs/reference/engine/classes/MemoryStoreSortedMap.md) instance for the provided name.

## Inherited Members

### From [Instance](/docs/reference/engine/classes/Instance.md)

- **Property `Archivable`** (`boolean`): Determines if an Instance and its descendants can be cloned using
- **Property `archivable`** (`boolean`):  *(deprecated, hidden)*
- **Property `Capabilities`** (`SecurityCapabilities`): The set of capabilities allowed to be used for scripts inside this
- **Property `Name`** (`string`): A non-unique identifier of the Instance.
- **Property `Parent`** (`Instance`): Determines the hierarchical parent of the Instance.
- **Property `PredictionMode`** (`PredictionMode`): 
- **Property `RobloxLocked`** (`boolean`): A deprecated property that used to protect CoreGui objects. *(hidden)*
- **Property `Sandboxed`** (`boolean`): When enabled, the instance can only access abilities in its `Capabilities`
- **Property `UniqueId`** (`UniqueId`): A unique identifier for the instance.
- **Method `AddTag(tag: string): ()`**: Applies a tag to the instance.
- **Method `children(): Instances`**: Returns an array of the object's children. *(deprecated)*
- **Method `ClearAllChildren(): ()`**: This method destroys all of an instance's children.
- **Method `Clone(): Instance`**: Create a copy of an instance and all its descendants, ignoring instances
- **Method `clone(): Instance`**:  *(deprecated)*
- **Method `Destroy(): ()`**: Sets the Instance.Parent property to `nil`, locks the
- **Method `destroy(): ()`**:  *(deprecated)*
- **Method `FindFirstAncestor(name: string): Instance?`**: Returns the first ancestor of the Instance whose
- **Method `FindFirstAncestorOfClass(className: string): Instance?`**: Returns the first ancestor of the Instance whose
- **Method `FindFirstAncestorWhichIsA(className: string): Instance?`**: Returns the first ancestor of the Instance for whom
- **Method `FindFirstChild(name: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance found with the given name.
- **Method `findFirstChild(name: string, recursive?: boolean): Instance`**:  *(deprecated)*
- **Method `FindFirstChildOfClass(className: string): Instance?`**: Returns the first child of the Instance whose
- **Method `FindFirstChildWhichIsA(className: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance for whom
- **Method `FindFirstDescendant(name: string): Instance?`**: Returns the first descendant found with the given Instance.Name.
- **Method `GetActor(): Actor?`**: Returns the Actor associated with the Instance, if any.
- **Method `GetAttribute(attribute: string): Variant`**: Returns the value which has been assigned to the given attribute name.
- **Method `GetAttributeChangedSignal(attribute: string): RBXScriptSignal`**: Returns an event that fires when the given attribute changes.
- **Method `GetAttributes(): Dictionary`**: Returns a dictionary of the instance's attributes.
- **Method `GetChildren(): Instances`**: Returns an array containing all of the instance's children.
- **Method `getChildren(): Instances`**:  *(deprecated)*
- **Method `GetDebugId(scopeLength?: int): string`**: Returns a coded string of the debug ID used internally by Roblox.
- **Method `GetDescendants(): Instances`**: Returns an array containing all of the descendants of the instance.
- **Method `GetFullName(): string`**: Returns a string describing the instance's ancestry.
- **Method `GetStyled(name: string, selector: string?): Variant`**: Returns the styled or explicitly modified value of the specified property,
- **Method `GetStyledPropertyChangedSignal(property: string): RBXScriptSignal`**: 
- **Method `GetTags(): Array`**: Gets an array of all tags applied to the instance.
- **Method `HasTag(tag: string): boolean`**: Check whether the instance has a given tag.
- **Method `IsAncestorOf(descendant: Instance): boolean`**: Returns true if an Instance is an ancestor of the given
- **Method `IsDescendantOf(ancestor: Instance): boolean`**: Returns `true` if an Instance is a descendant of the given
- **Method `isDescendantOf(ancestor: Instance): boolean`**:  *(deprecated)*
- **Method `IsPropertyModified(property: string): boolean`**: Returns `true` if the value stored in the specified property is not equal
- **Method `QueryDescendants(selector: string): Instances`**: 
- **Method `Remove(): ()`**: Sets the object's `Parent` to `nil`, and does the same for all its *(deprecated)*
- **Method `remove(): ()`**:  *(deprecated)*
- **Method `RemoveTag(tag: string): ()`**: Removes a tag from the instance.
- **Method `ResetPropertyToDefault(property: string): ()`**: Resets a property to its default value.
- **Method `SetAttribute(attribute: string, value: Variant): ()`**: Sets the attribute with the given name to the given value.
- **Method `WaitForChild(childName: string, timeOut: double): Instance`**: Returns the child of the Instance with the given name. If the
- **Event `AncestryChanged`**: Fires when the Instance.Parent property of this object or one of
- **Event `AttributeChanged`**: Fires whenever an attribute is changed on the Instance.
- **Event `ChildAdded`**: Fires after an object is parented to this Instance.
- **Event `childAdded`**:  *(deprecated)*
- **Event `ChildRemoved`**: Fires after a child is removed from this Instance.
- **Event `DescendantAdded`**: Fires after a descendant is added to the Instance.
- **Event `DescendantRemoving`**: Fires immediately before a descendant of the Instance is removed.
- **Event `Destroying`**: Fires immediately before (or is deferred until after) the instance is
- **Event `StyledPropertiesChanged`**: Fires whenever any style property is changed on the instance, including

### From [Object](/docs/reference/engine/classes/Object.md)

- **Property `ClassName`** (`string`): A read-only string representing the class this Object belongs to.
- **Property `className`** (`string`):  *(deprecated)*
- **Method `GetPropertyChangedSignal(property: string): RBXScriptSignal`**: Get an event that fires when a given property of the object changes.
- **Method `IsA(className: string): boolean`**: Returns true if an object's class matches or inherits from a given class.
- **Method `isA(className: string): boolean`**:  *(deprecated)*
- **Event `Changed`**: Fires immediately after a property of the object changes, with some