I'm the author of Data Engineering Design Patterns (O'Reilly),
a Databricks MVP, and
a freelance data engineer specializing in Apache Spark and Databricks.
I help teams move from working pipelines to resilient architectures.
I'm currently accepting new projects for Jun 2026. Whether you need a 2-day architectural audit, a hands-on lead for a
complex data engineering problem, or a workshop
let's discuss your project here.
When we format date time objects with Java's API, very often we prefer to use already defined patterns. They probably cover 3/4 of total needs. But one of these patterns is a trap - DateTimeFormatter....
