The JusDB Database Engineering Blog

Compare Delta Lake, Apache Iceberg, and Apache Hudi — ACID transactions, time travel, and format interoperability

Use dbt to build modular SQL transformations — models, tests, documentation, and CI/CD for your data warehouse

Compare CDC, ETL, and ELT — latency, complexity, cost, and when each pattern fits your data pipeline needs

Compare Snowflake, ClickHouse, and BigQuery on performance, cost, ecosystem, and real-world use cases in 2026

Compare ScyllaDB and Apache Cassandra — throughput, latency, operational complexity, and when to switch

Understand RDS Multi-AZ for HA and Read Replicas for read scaling — failover behavior, replication lag, and costs

Use Aurora Serverless v2 for cost-effective scaling — ACU configuration, scaling behavior, and when it fits

Choose the right Cassandra compaction strategy for your workload — STCS for write-heavy, LCS for read-heavy, TWCS for time-series

Model Cassandra from access patterns, distribute and bound partitions, and operate time-series TTL and compaction without relying on dangerous shortcuts.

Compare Redis RDB snapshots and AOF logging — durability trade-offs, performance impact, and recovery scenarios

Configure Redis Cluster for horizontal scaling — hash slots, replication, failover, and client-side routing

Master MongoDB aggregation pipeline stages — $lookup, $group, $facet, explain plans, and index optimization