// notes from the field
Writing.
Thoughts on data systems, streaming and machine learning platforms.
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6 articles
Arbitrary Stateful Aggregation with Spark
How to build custom stateful streaming logic with flatMapGroupsWithState, including timeouts, conditional outputs, practical examples and performance considerations.
MediumENEconomics and Value of Bitcoin
An exploration of Bitcoin’s limited supply, halving cycles and price volatility, alongside the debate around its role as a store of value.
MediumENThe Basics of Bitcoin: What It Is and How It Works?
An introduction to Bitcoin’s architecture, covering blockchain, cryptographic hashes, proof of work and how the network reaches consensus.
MediumENHow iFood improved feature management to combat fraud
A look at iFood’s Feature Platform: how real-time feature computation, consistent definitions and low-latency serving support fraud detection.
MediumPTFrom Data Warehouses to Data Mesh
A tour of data warehouses, data lakes and data mesh, exploring how data ownership, governance and architecture evolve as organizations grow.
MediumENWhat the Hell is… Big Data?
An introduction to big data’s defining characteristics, common business applications and the privacy concerns that come with collecting and analyzing data.
MediumEN
Some articles were originally published in Portuguese. EN / PT indicates the original language.