[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CacheStorage](./puppeteer.protocol.cachestorage.md) > [Cache](./puppeteer.protocol.cachestorage.cache.md) > [cacheId](./puppeteer.protocol.cachestorage.cache.cacheid.md) ## Protocol.CacheStorage.Cache.cacheId property An opaque unique id of the cache. Signature: ```typescript cacheId: CacheId; ```