The JusDB Database Engineering Blog

PostgreSQL 19 Beta 1 (June 4, 2026) brings parallel autovacuum, the native REPACK command for online table rebuilds, 2x faster inserts under foreign-key load, online logical replication without a restart, WAIT FOR LSN for read-your-writes consistency, and default changes (JIT off, lz4 TOAST, RADIUS removed). A DBA-focused walkthrough of what changed and what to test before GA.

A repeatable, top-down method for tuning PostgreSQL: measure with pg_stat_statements, read plans with EXPLAIN (ANALYZE, BUFFERS), fix queries and indexes before parameters, then tune memory, I/O, WAL, connection pooling, and autovacuum — with a ready-to-adapt postgresql.conf baseline.

Walk through PostgreSQL's multi-process architecture, shared/local memory layout, page-organized storage, MVCC tuple versioning, the WAL write path, the query execution pipeline, and physical + logical replication — all with ASCII flow diagrams that show how data and control actually move through the system.

Comprehensive PostgreSQL guide covering MVCC, extensions, partitioning, logical replication, and performance tuning. Learn why PostgreSQL powers modern applications.

Navigate the open source database landscape. Compare MySQL, PostgreSQL, MongoDB, Redis, and Cassandra with detailed feature analysis and selection criteria.

Configure auto_explain to automatically log EXPLAIN output for slow PostgreSQL queries. Covers log_analyze, log_buffers, sample_rate, JSON format, and RDS setup.

Configure pgAudit for PostgreSQL SOC2, PCI-DSS, and HIPAA compliance. Covers session vs object auditing, log format, log volume management, and SIEM integration.

Learn how to use pgBadger to analyze PostgreSQL logs, find slow queries, and automate daily reporting. Includes postgresql.conf setup, cron automation, and RDS tips.

Set up PostgreSQL monitoring with Prometheus and postgres_exporter. Includes install steps, critical alert rules, Grafana dashboard panels, and custom query metrics.

Use PostgreSQL tablespaces to distribute tables and indexes across NVMe, SSD, and archive storage. Covers creation, ALTER TABLE SET TABLESPACE, monitoring, and backup.

Migrate Oracle to PostgreSQL using ora2pg. Covers NUMBER→NUMERIC, DATE gotchas, PL/SQL→PL/pgSQL conversion, sequences, DUAL, NULL handling, and validation steps.