The JusDB Database Engineering Blog

Navigate the complex landscape of database technologies. Compare SQL vs NoSQL, OLTP vs OLAP, and learn decision frameworks for selecting the perfect database for your use case.

Process DynamoDB Streams with Lambda for change data capture, cross-region replication, and event sourcing

Use Percona XtraBackup to take hot physical backups of MySQL InnoDB — setup, verification, and restore steps

A comprehensive guide to optimizing AWS RDS MySQL performance through infrastructure tuning, parameter configuration, and query optimization

MySQL 8.0 significantly improved geospatial support with SRID-aware columns, spatial reference systems, and accurate geographic distance calculations. Here's how to use it in production.

Running MongoDB without TLS exposes your data to network interception and man-in-the-middle attacks. Here's how to configure TLS/SSL across your MongoDB replica set.

Implement zero-downtime database migrations with versioning strategies. Learn about Flyway, Liquibase, schema evolution patterns, and rollback strategies.

Set up MySQL Galera Cluster for synchronous multi-master replication — configuration, split-brain avoidance, and monitoring

Master horizontal and vertical partitioning, plus database sharding strategies for handling billions of records. Learn partition pruning, shard key selection, and cross-shard query optimization.

Evaluate PlanetScale for MySQL workloads — Vitess-based branching, non-blocking schema changes, and pricing

MySQL 8.0 exposes error logs through performance_schema.error_log — enabling SQL-based filtering by severity, component, and timestamp without grep-ing log files.

MySQL's ecosystem includes three main logical backup tools — mysqldump, mysqlpump, and mydumper. Each has distinct performance characteristics, parallelism support, and compatibility trade-offs.