In DynamoDB, there are two consistency modes: eventual and strongly consistent. Understanding these is crucial as they affect read/write behaviors and potential software bugs.
Eventual consistency means that reads may not reflect the latest data. Although consistency is typically achieved within seconds, there's no exact timeframe for the process.
In strongly consistent mode, reads guarantee the most recent write results. This mode ensures that software operates on the latest data, avoiding outdated information.
When using DynamoDB, it's essential to choose the right consistency mode for your application, as incorrect usage may lead to unexpected behaviors.
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