---
title: "@std/cache"
description: "Cache utilities"
jsr: jsr:@std/cache
pkg: cache
version: 0.2.2
generated: true
stability: unstable
---
:::info Unstable
This @std package is experimental and its API may change without a major version bump.
:::
## Overview
In-memory cache utilities, such as memoization and caches with different
expiration policies.
```js
import { memoize, LruCache, type MemoizationCacheResult } from "@std/cache";
import { assertEquals } from "@std/assert";
const cache = new LruCache>(1000);
// fibonacci function, which is very slow for n > ~30 if not memoized
const fib = memoize((n: bigint): bigint => {
return n <= 2n ? 1n : fib(n - 1n) + fib(n - 2n);
}, { cache });
assertEquals(fib(100n), 354224848179261915075n);
```
### Add to your project
```sh
deno add jsr:@std/cache
```
See all symbols in @std/cache on