Consistent hashingQueue messages durably1, make consumers idempotent2, and replay from the log when something fails3.
A one-page summary of the book where every line links to the capture it came from. Needs Google sign-in.FEATURE · BOOKS
Turn answers into books you reuse.
Collect the best answers on one topic, then bring the whole book back into any chat.
Add to Chrome. It's free3 books on Free. No book limit on Pro.
CHAPTERS1 · Consistent hashing2 · Rate limiters3 · Read replicas and lag4 · Kafka vs RabbitMQDrag to reorder
SYSTEM DESIGN NOTES · READING MODE
Consistent hashing
Consistent hashingServers and keys sit on the same ring, and each key belongs to the next server clockwise. When you add a server, only about K/N keys move.
Virtual nodes smooth out the load when servers differ in size.
Use in chatExport to Markdown
One book, used in a new chat.
Four answers saved over a month from ChatGPT and Claude, filed in one book, then handed back to the AI in one click.
From scattered chats to one book.
- CHAPTER 1
Save answers as you go
Press Save answer or Save highlight on ChatGPT or Claude. Each capture lands in your Inbox.
- CHAPTER 2
Add them to a book
Pick a book from the toast or the Inbox. A book is a topic: System Design Notes, Thesis Research, Product Decisions.
- CHAPTER 3
Use the book in any chat
Press Use in chat and the whole book goes into your prompt. The AI answers from what you already learned.
A book is worth more than the chats it came from.
- One topic, one place
- Answers from different days and different AIs sit together, in the order you choose.
- Better answers from the AI
- Start a new chat with your own notes already in it, instead of explaining it all again.
- Export to Markdown
- Take any book to Notion, Obsidian or a doc as one clean file. Included on every plan, any time.
Questions about books.
How many captures can a book hold?
A book can hold as many captures as your plan allows: Free holds 50 captures across up to 3 books, Pro holds 10,000 in as many books as you need.
What does Use in chat add to my prompt?
The captures in the book as plain text, with their titles, so the AI answers from your notes. You see it in the prompt box before you send.
What is an AI Book Brief?
A one-page summary of a book where every line links to the capture it came from. It needs Google sign-in: 5 a month on Free, 100 on Pro.