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Guide
What is Change Data Capture (CDC)?
A comprehensive guide to Change Data Capture — how it works, why it matters for database migrations, and how NoSQLSync uses CDC for zero-downtime MongoDB, DynamoDB, and Firestore replication.
Guide
MongoDB Oplog Explained
Understand MongoDB's oplog — how it works, how to tail it, and how NoSQLSync uses it for real-time CDC replication to SQL databases.
Guide
MongoDB vs PostgreSQL: Key Differences
A detailed comparison of MongoDB and PostgreSQL — data models, query languages, performance, scaling, and when to use each database.
Guide
Zero-Downtime Database Migration: A Practical Guide
A practical guide to migrating databases without downtime — CDC-based replication, validation strategies, and cutover procedures.
Guide
ObjectId to UUID: A Conversion Guide
What happens to MongoDB ObjectIds when you migrate to a SQL database — how NoSQLSync stores them, when a UUID conversion makes sense, and how to keep references and sort order intact.
Guide
CDC vs Batch ETL: Which is Right for Your Migration?
Compare Change Data Capture and batch ETL for database migration. Understand the tradeoffs in latency, complexity, and data consistency.