The JusDB Database Engineering Blog

DuckDB brings OLAP query performance to your Python process without a server or cluster. Learn how to query Parquet files, replace heavy ETL jobs, and run analytics directly against PostgreSQL.

ScyllaDB 6.0's shard-per-core architecture delivers 3-8x Cassandra throughput on identical hardware. Learn the performance differences, migration path from Cassandra, and when ScyllaDB tablets beat vnodes.

Explore PostgreSQL 18 revolutionary features including async I/O, improved parallelism, enhanced JSON support, and developer experience improvements coming in 2025.

MariaDB and MySQL have diverged significantly. This guide compares licensing, Galera vs Group Replication, thread pool, cloud support, and migration paths.

Redis 8 and Valkey 8 both launched in 2025 with competing performance claims. They differ on licensing, governance, and roadmap. Here is how to choose for production.

OpenSearch (Apache 2.0) and Elasticsearch (EL2/SSPL) have diverged. Compare licensing, security features, AI/ML capabilities, and migration complexity for 2026.

Understand the Redis fork landscape after licensing changes. Compare Redis and Valkey features, licensing implications, migration paths, and community support.

Use Neon for serverless PostgreSQL — database branching for dev/test, autoscaling, and cost model

Migrate from Redis to Valkey — compatibility, performance benchmarks, and what changes for operators

Use Apache Flink CDC to capture MySQL and PostgreSQL changes — stateful processing, exactly-once semantics, and Kubernetes deployment

A detailed comparison of PgBouncer, Odyssey, and pgcat for PostgreSQL connection pooling — architecture differences, threading models, pool modes, TLS support, and decision criteria for each workload type.

Compare Elasticsearch, Typesense, and Meilisearch — relevance, speed, operational complexity, and when to use each