Idempotency
Idempotency is a concept in software engineering that refers to the non-functional property of operations that can be performed multiple times while still having the same effect as performing it only once. In other words, an idempotent operation can be safely repeated without side effects. Let’s cover a short scenario where idempotency is required.
A use case where idempotency is required
Imagine that we’re building an online banking application. A key capability is Transfer Funds, in which a user transfers money from one account to another. This capability is a fundamental yet critical part of the system, and it needs to be implemented in a way that ensures the integrity and reliability of the user’s financial transactions.
If the Transfer Funds operation isn’t idempotent, then the user could accidentally click the Transfer button multiple times, and the system would execute the transfer operation multiple times, resulting in an unintended...
