To fully understand this chapter, it is necessary to have read the previous chapter that focused on how to validate events. This chapter is focused on how to enrich events.
In this chapter, we will continue using the systems of Monedero, our fictitious company that is dedicated to the exchange of cryptocurrencies. If we remember in the previous chapter, the messages of Monedero were validated; in this chapter, we will continue with the same flow, but we will add one more step of enrichment.
In this context, we understand enrichment as adding extra data that was not in the original message. In this chapter, we will see how to enrich a message with geographic location using the MaxMind database and how to extract the current value of the exchange rate using the Open Exchange data. If we remember the events that we modeled for Monedero, each one included the IP...
