情境
A user enters an amount, selects source and target currencies, and the system fetches live exchange rates to convert and display the result with retry handling for rate fetching failures.
這張圖裡有什麼
看懂背後的決策。
01
Validate amount before requesting rates
02
Fetch live exchange rate with retry option
03
Handle rate unavailability cleanly
Use this flowchart when designing or documenting a currency conversion feature that depends on live rate availability and user input validation.