Huge volumes of data flow through a robust Kafka architecture, into several ETLs, receiving, transforming and storing the data. We clearly understood our ETLs’ workflow and our data architecture, from source to destination.

But how much did we know about the way our data makes though our systems? And what about the life long question, is it the end of the day yet?

In this talk I’m going to present to you the design process behind our Data Auditing system, Life Line. From tracking and producing, to analyzing and storing auditing information, using technologies such as Kafka, Avro, Spark, Lambda functions and complex SQL queries. We’re going to cover: * AVRO Audit header * Auditing heart beat - designing your metadata * Designing and optimizing your auditing table - what does this data look like anyway? * Creating an alert based monitoring system * Answering the most important question of all - is it the end of the day yet?

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