[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CacheStorage](./puppeteer.protocol.cachestorage.md) > [CacheId](./puppeteer.protocol.cachestorage.cacheid.md) ## Protocol.CacheStorage.CacheId type Unique identifier of the Cache object. Signature: ```typescript export type CacheId = string; ```