![The Significance of Idempotency in Software Engineering](https://pentatech.com.au/wp-content/uploads/2023/10/The-Significance-of-Idempotency-in-Software-Engineering-768x402.jpeg)
Idempotency ensures data consistency, fault tolerance, safe retrying, caching and optimization; regardless of how many times it is performed.
![Fault tolerance actionable failure metrics](https://pentatech.com.au/wp-content/uploads/2023/07/Screen-Shot-2023-07-15-at-12.31.33-pm-768x402.png)
The capacity to withstand a fault without failure is fault tolerance. Monitoring and measuring failure metrics is key to understand what is going on.
![The subtle art of systems decoupling](https://pentatech.com.au/wp-content/uploads/2023/07/Screen-Shot-2023-07-12-at-5.49.40-pm-768x404.png)
Systems coupling has several dimensions. Hence, decoupling each aspect can take you in a different direction with conflicting trade-offs.