2023
Activity Logging System
Large-scale Data Migration & Backend Modernization
PostgreSQL · NestJS · Elasticsearch · Data Migration · Database Design
Description
Activity Logging System was a project completed during my internship at Saltmine. The goal was to migrate a high-volume activity logging system from Elasticsearch to PostgreSQL while improving maintainability and long-term scalability.
The project involved redesigning database schemas, creating migration pipelines, and supporting backend refactoring efforts.
Motivation
As software systems evolve, decisions that were once suitable may eventually become limitations. This project gave me the opportunity to work on a real-world migration effort and learn how architectural decisions affect maintainability, performance, and future development.
Features
- migration of historical activity data from Elasticsearch to PostgreSQL
- relational schema redesign and normalization
- backend service refactoring and modernization
- data integrity validation during migration
- improved maintainability and operational reliability
Key Contributions
- Designed relational schemas for migrated activity data.
- Built migration pipelines from Elasticsearch to PostgreSQL.
- Supported backend modernization efforts.
- Validated historical activity data integrity during migration.
Development Log
Year
- 2023 (initial migration project)