Database Insights

Go beyond basics with Debezium — handle schema evolution, manage connector offsets, and build resilient CDC pipelines

Compare Delta Lake, Apache Iceberg, and Apache Hudi — ACID transactions, time travel, and format interoperability

A production guide to AWS Database Migration Service — replication instance sizing, endpoint configuration, Full Load vs CDC vs Full Load+CDC modes, performance tuning, and DMS vs Debezium vs pglogical.

Understand Google Spanner's architecture — TrueTime, interleaved tables, schema design, and cost model

Master AWS RDS connection limits for MySQL and PostgreSQL. Learn max_connections calculation, connection pooling strategies, and optimization techniques.

Identify bloated indexes in PostgreSQL using pgstattuple, REINDEX CONCURRENTLY, and automated monitoring

Design multi-tenant databases — compare schema-per-tenant, row-level-security, and database-per-tenant approaches

Debezium reads MySQL binary logs and PostgreSQL WAL to stream every row-level change as a Kafka event in near real-time — replacing nightly batch ETL with sub-second data propagation.

PostgreSQL views historically executed with the owner's privileges, bypassing row-level security policies. PostgreSQL 15 fixed this with security_invoker views — here's why it matters and how to use it in multi-tenant schemas.

Use Neo4j for relationship-heavy data — Cypher query language, graph algorithms, and fraud detection use cases

A production guide to Citus — distributed PostgreSQL for horizontal sharding. Hypertable setup, distribution column selection, colocation for local joins, reference tables, and Citus vs native PostgreSQL partitioning.

Stream PostgreSQL changes to Kafka using pgoutput and Debezium — setup, monitoring, and lag management