DB migrations in legacy without ORM: structure and practice https://sudonull.com/db-migrations-in-legacy-without-orm-structure-and-practice
Setting up DDL/DML migrations for legacy systems: Git structure, version tables, deploy to dev/prod. Change control without Liquibase/Flyway. Instructions for middle/senior dev.
Oracle → PostgreSQL Migration Without Downtime https://sudonull.com/oracle-postgresql-migration-without-downtime
Step-by-Step Technical Guide to Migrating from Oracle to PostgreSQL Without Service Downtime. CDC, Debezium, Kafka Connect, Liquibase — Implementation Details.
Migration of n8n to Traefik 3.3 and Postgres 16: technical guide https://sudonull.com/migration-of-n8n-to-traefik-3-3-and-postgres-16-technical-guide
Step-by-step instructions for safe n8n upgrade from Traefik 1.x and Postgres 11. Save data and accounts. Read the guide for DevOps engineers.
DuckDB as storage: replacing ETL Postgres https://sudonull.com/duckdb-as-storage-replacing-etl-postgres
Learn how DuckDB replaces ETL + Postgres with one file for OLAP. Code examples, SLA, migration. Simplify analytics without infrastructure — read the guide for developers.
Database Architecture for Parsing Tariffs on PostgreSQL https://sudonull.com/database-architecture-for-parsing-tariffs-on-postgresql
Study the star schema for storing internet and TV tariffs: fact tables, dimensions, historicity triggers, indexes. Full SQL code for middle/senior developers. Implement provider monitoring without data loss.