In many enterprise systems, you may need to work with multiple databases — for example, customer data in PostgreSQL, legacy records in Oracle, and transactional data in MySQL. Managing these connections efficiently while keeping the code clean can be c…
Event‑Driven Architecture (EDA) decouples producers from consumers using an event broker. You get independent scaling, resilience, and faster iteration.1) Why EDA?Loose coupling: Producers don’t know who consumes; consumers don’t care who produced.Elas…
When writing efficient Java code, algorithmic complexity matters—a lot. In this post, I’ll walk you through two fundamental time complexities: O(1) and O(n), using clear Java 21 examples, and explain which one is more efficient for common search operat…
This lightweight Change Data Capture (CDC) pipeline streams PostgreSQL logical replication events to BigQuery — no Debezium, no Kafka, just native GCP tools.🧩 Architecture Overview[Cloud SQL (PostgreSQL)]
└─ Logical replication via wal2json plugin
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IntroductionTwo fully automated, production-grade pipelines demonstrate secure data ingestion from Cloud SQL PostgreSQL into BigQuery, using Apache Beam (Python) and Dataflow Flex Templates — all without public IP exposure.✅ 1. Private Service Ac…