payments system designs

The design library

Find your next starting point

Building blocks, complete architectures, and variations worth comparing. Search by the problem you want to solve or a component you want to understand.

1 design

Clear all

Building blockOfficial
Idempotency Keys
The caller names the operation, the server stores the first response under that name, and a retry replays it instead of doing the work twice.
idempotencypaymentsretriesexactly-once
System Design AI0 bookmarks0 comments

Find your next starting point

1 design

Idempotency Keys