The JusDB Database Engineering Blog

Use StarRocks for high-performance vector search with HNSW indexes. Learn real-time vector ingestion, hybrid queries combining vectors with analytics, and scaling strategies.

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

TiDB's write path crosses multiple layers — SQL parser, planner, TiKV region leader, Raft log replication, and 2PC commit — before a transaction is durable. Here's a complete walkthrough.

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.

A practical guide to choosing between read replicas and caching layers — replication lag behavior, cache invalidation strategies, thundering herd prevention, tiered read architecture patterns, and decision framework.

How to size your database connection pool correctly — the HikariCP formula, the variables that determine optimal pool size, and the mistakes that cause connection exhaustion or underutilization.

Compare CockroachDB, Google Spanner, and YugabyteDB — consistency models, PostgreSQL compatibility, and operational costs

Deploy Vitess for horizontal MySQL sharding — VSchema design, vtgate routing, and migration from single-instance MySQL

ProxySQL pools thousands of application connections into a small backend pool, splits reads to replicas automatically, and lets you change routing without touching application code or restarting MySQL.

Understand Google Spanner's architecture — TrueTime, interleaved tables, schema design, and cost model

A production guide to Citus — distributed PostgreSQL for horizontal sharding. Hypertable setup, distribution column selection, colocation for local joins, reference tables, and Citus vs native PostgreSQL partitioning.

pg_partman automates PostgreSQL partition lifecycle. This guide covers create_parent(), retention policies, partition pruning, and migrating existing tables without downtime.