This content originally appeared on DEV Community and was authored by Sibelius Seraphini
Idempotency is a crucial concept in distributed systems and web applications, ensuring that performing the same operation multiple times produces the same result.
The lack of idempotency property can cause a lot of problems and bugs, which can make your startup go bankrupt.
Duplication of data
When your system does not have idempotency, you will have duplicated data that you don't want.
This is a bug, that will increase the support tickets requests.
You will also need some work to create a data migration to deduplicate this data.
This can also lead to wrong reports and data.
Duplicating payments
Without idempotency, you can duplicate payments, refunds, and withdrawals.
This will cause a loss of money for you and your customers.
Duplicating notifications
Send the same email or push notifications to the same user will cause friction and it is annoying to them.
Some users will mark your emails as spam, making your email delivery worse.
In the worst-case scenario, they can churn and stop using your buggy system.
A duplicate webhook was sent.
Inconsistency data
Duplicate data and unexpected side effects can cause data inconsistency causing problems like wrong balance in your ledger accounts.
Wrong reports.
Reducing the trust in your product from the customers.
In Conclusion
Duplicating something does not feel like a big deal, but it can cause a lot of problems.
Making sure your internal system has idempotency property and the external systems that you consume also have idempotency in place can help you avoid most of the problems avoid.
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This content originally appeared on DEV Community and was authored by Sibelius Seraphini
Sibelius Seraphini | Sciencx (2024-06-21T13:21:40+00:00) Problems caused by the lack of idempotency. Retrieved from https://www.scien.cx/2024/06/21/problems-caused-by-the-lack-of-idempotency/
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