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Change data capture (CDC) is a widely used solution to offload data in real time from legacy systems to Kafka in order to make it available to all the other downstream consumer applications. Despite other solutions CDC can in fact guarantee at the same time low latency and a very small footprint on the source system. However when data is moved from a relational database to a distributed stream platform what is gained in terms of throughput and latency is lost in terms of strong consistency and not all consumers are able to manage this loss by themselves. There are different upstream solutions that can be implemented to mitigate this problem preserving different levels of consistency.
In this talk we’ll: