Tell me again in detail about the Redis incident — why was it not automated earlier?

Redis incidents are often associated with unexpected cluster behavior or failures that are difficult to predict and track automatically. The main reason why no one automated this earlier is the complexity of reproducing the conditions under which the problem occurs and the lack of tools for detailed monitoring and real-time analysis.

Moreover, Redis is a high-performance in-memory database where failures can be rare and unpredictable, and automation requires a deep understanding of internal mechanisms and load specifics. Incidents were often resolved manually because automation could lead to false positives or miss important details.

Now, with the development of monitoring, logging, and automated alerting tools, it is possible to create more reliable automatic response systems, but this requires significant effort in configuration and testing.