The JusDB Database Engineering Blog

Use pgbench to benchmark PostgreSQL before and after configuration changes. Covers scale factor selection, TPC-B and read-only workloads, custom SQL scripts, and latency percentiles.

Enable and tune PostgreSQL parallel query for analytical workloads. Covers max_parallel_workers settings, PARALLEL SAFE functions, JIT compilation, and execution plan verification.

Connection exhaustion is one of the most common causes of database downtime at scale. Here is how production teams use PgBouncer and ProxySQL to handle 10,000+ concurrent connections.

Diagnose and fix PostgreSQL query plan cache issues. Covers generic vs custom plans, plan_cache_mode setting, DEALLOCATE, statistics targets, and pg_stat_statements variance detection.

Configure the MySQL slow query log and analyze it with pt-query-digest to find top offenders by total time. Includes EXPLAIN diagnosis and performance_schema alternative.

Master database index design: composite index column order, covering indexes with INCLUDE, partial indexes for filtered queries, functional indexes, and unused index auditing.

Implement MySQL table partitioning with RANGE and HASH strategies. Covers instant partition drops for data lifecycle, partition pruning verification, and key gotchas.

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

Tune autovacuum for high-churn PostgreSQL tables. Lower scale factors, monitor dead tuple accumulation, detect wraparound risk, and use pg_stat_progress_vacuum.

Measure and reclaim PostgreSQL index bloat using pgstatindex and REINDEX CONCURRENTLY. Learn safe online index rebuilding and autovacuum tuning to prevent future bloat.

PostgreSQL offers multiple index types for different access patterns — and choosing wrong means slow queries or wasted space. A comprehensive guide to indexing strategy, from type selection to monitoring and maintenance.

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.