This function is only applicable for Hacknet Servers (the upgraded version of a Hacknet Node).
Tries to upgrade the specified Hacknet Server’s cache n times.
Returns true if it successfully upgrades the Server’s cache n times, or if it purchases some positive amount and the Server reaches its max cache level.
Returns false otherwise.
<b>Signature:</b>
```typescript
upgradeCache(index: number, n: number): boolean;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | Index/Identifier of Hacknet Node. |
| n | number | Number of cache levels to purchase. Must be positive. Rounded to nearest integer. |
<b>Returns:</b>
boolean
True if the Hacknet Node’s cores are successfully purchased, false otherwise.
