# Ready Player Two - Rocicorp, LLC Synced: [[2023_11_30]] 6:03 AM Last Highlighted: [[2023_10_19]] Tags: [[explainer]] [[software]] ![rw-book-cover](https://rocicorp.dev/blog-content/reflect-beta/sunrise2.jpg) ## Highlights [[2023_10_19]] [View Highlight](https://read.readwise.io/read/01hd48an2t5an3mjxzb6971b3v) > Yjs is a *sequence* CRDT. It models a sequence of items. Sequences are great for working with lists, chunks of text, or maps — all tasks Yjs excels at. But a counter is not any of those things, so Yjs struggles to model it well.