***

title: "CacheService"
generated: true
---------------

<GenerationInfo sourceFile="packages/core/src/cache/cache.service.ts" sourceLine="21" packageName="@vendure/core" since="3.1.0" />

The CacheService is used to cache data in order to optimize performance.

Internally it makes use of the configured [CacheStrategy](/current/core/reference/typescript-api/cache/cache-strategy#cachestrategy) to persist
the cache into a key-value store.

```ts title="Signature"
class CacheService {
    protected cacheStrategy: CacheStrategy;
    constructor(configService: ConfigService)
    createCache(config: CacheConfig) => Cache;
    get(key: string) => Promise<T | undefined>;
    set(key: string, value: T, options?: SetCacheKeyOptions) => Promise<void>;
    delete(key: string) => Promise<void>;
    invalidateTags(tags: string[]) => Promise<void>;
}
```

<div className="members-wrapper">

### cacheStrategy

\<MemberInfo kind="property" type={`<a href='/current/core/reference/typescript-api/cache/cache-strategy#cachestrategy'>CacheStrategy</a>`}   />

### createCache

\<MemberInfo kind="method" type={`(config: <a href='/current/core/reference/typescript-api/cache/cache-config#cacheconfig'>CacheConfig</a>) => <a href='/current/core/reference/typescript-api/cache/#cache'>Cache</a>`}   />

Creates a new [Cache](/current/core/reference/typescript-api/cache/#cache) instance with the given configuration.

The `Cache` instance provides a convenience wrapper around the `CacheService`
methods.

### get

\<MemberInfo kind="method" type={`(key: string) => Promise<T | undefined>`}   />

Gets an item from the cache, or returns undefined if the key is not found, or the
item has expired.

### set

\<MemberInfo kind="method" type={`(key: string, value: T, options?: <a href='/current/core/reference/typescript-api/cache/cache-strategy#setcachekeyoptions'>SetCacheKeyOptions</a>) => Promise<void>`}   />

Sets a key-value pair in the cache. The value must be serializable, so cannot contain
things like functions, circular data structures, class instances etc.

Optionally a "time to live" (ttl) can be specified, which means that the key will
be considered stale after that many milliseconds.

### delete

\<MemberInfo kind="method" type={`(key: string) => Promise<void>`}   />

Deletes an item from the cache.

### invalidateTags

\<MemberInfo kind="method" type={`(tags: string[]) => Promise<void>`}   />

Deletes all items from the cache which contain at least one matching tag.

</div>