PostgreSQL Archives - The Data Transformation Company

Troubleshooting PostgreSQL Streaming Replication Lag in Production

PostgreSQL replication lag troubleshooting: measure send, flush and replay lag via pg_stat_replication, isolate the bottleneck stage, and fix it.

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Troubleshooting Slow PostgreSQL Queries with EXPLAIN ANALYZE and pg_stat_statements

PostgreSQL slow query troubleshooting with EXPLAIN ANALYZE and pg_stat_statements: find, diagnose, and fix slow queries in production, step by step.

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pgvector for timeseries data anomaly detection in PostgreSQL

Using pgvector for Timeseries Data in PostgreSQL: Anomaly Detection with Vectors

pgvector for timeseries data is a technique MinervaDB uses to bring vector similarity to operational analytics inside PostgreSQL. Most engineering teams first meet pgvector as an AI tool for semantic search and embeddings, but the [...]

Setting Sail: Installing CloudNativePG (CNPG) for PostgreSQL on Kubernetes

Running PostgreSQL on Kubernetes used to feel like a daunting challenge reserved for platform engineering teams with deep operational expertise. That reality has changed. With CloudNativePG (CNPG), deploying a production-grade PostgreSQL cluster on Kubernetes is [...]

PostgreSQL 18 Performance Configuration Matrix: New Parameters and MinervaDB Tuning Recommendations

The release of PostgreSQL 18 introduces one of the most consequential rounds of configuration changes the project has shipped in years. For database engineers and site reliability teams, understanding PostgreSQL 18 performance tuning is no [...]

Partitioned Table Statistics in PostgreSQL: How ANALYZE Fixed a Slow Query

Partitioned table statistics are one of the most misunderstood corners of PostgreSQL performance tuning, and getting partitioned table statistics right is often the fastest win available to a DBA. A partitioned table can look perfectly [...]

How to Do UPDATE … LIMIT in PostgreSQL (With Standard SQL Alternatives)

If you have ever migrated a workload from MySQL to PostgreSQL, you have probably hit a wall the first time you tried to run a statement like UPDATE mytable SET status = 'done' LIMIT 100;. [...]

Patroni Standby Cluster: Cascading Replication for PostgreSQL High Availability

PostgreSQL has become the database of choice for organizations that demand reliability, and Patroni sits at the center of most production-grade PostgreSQL high availability deployments. In this in-depth guide we walk through one of Patroni's [...]

btree_gist improvements in PostgreSQL 18

The btree_gist improvements in PostgreSQL 18 are one of the most practical performance wins shipping in this release for teams that depend on exclusion constraints, composite indexes, and nearest-neighbour search. The btree_gist extension lives in [...]

Should I Rebuild My PostgreSQL Index? When and How to REINDEX

Few maintenance questions generate as much confusion in the PostgreSQL community as this one: should I rebuild my PostgreSQL index, and if so, how often? Database administrators arriving from other systems frequently ask, "How can [...]