PostgreSQL
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.
[...] MinervaDB Blog
Indexing
Detecting and Fixing PostgreSQL Index Bloat with REINDEX CONCURRENTLY
PostgreSQL index bloat: measure it with pgstattuple, understand why B-trees inflate, and rebuild online with REINDEX CONCURRENTLY without downtime.
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Monitoring
PostgreSQL Wait Event Analysis: Finding Bottlenecks with pg_stat_activity
PostgreSQL wait events explained: sample pg_stat_activity, interpret Lock, LWLock, IO and Client waits, and turn wait profiles into targeted fixes.
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PostgreSQL
Diagnosing Autovacuum Lag and Table Bloat in PostgreSQL Production Systems
PostgreSQL autovacuum tuning for production: diagnose autovacuum lag, measure table bloat, fix per-table thresholds, and prevent wraparound risk.
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Database Performance Tuning
PgBouncer Pool Saturation: Diagnosing Connection Bottlenecks in PostgreSQL
PgBouncer performance tuning for PostgreSQL: diagnose pool saturation with SHOW POOLS, read cl_waiting correctly, size pools, and fix bottlenecks.
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PostgreSQL
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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MariaDB
MariaDB Performance Monitoring: 20 Essential Metrics Every DBA Should Track for Troubleshooting
Why MariaDB Performance Monitoring Fails Without Baselines MariaDB performance monitoring is what separates a diagnosis from a guess. Most MariaDB incidents are never actually diagnosed. When a production cluster degrades at 02:00, the on-call DBA [...]
PostgreSQL AI/ML
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 [...]
Cloud Databases
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 [...]
Cassandra Performance
Configuring Apache Cassandra for Optimal Performance
Apache Cassandra performance tuning is what separates a cluster that quietly absorbs millions of writes per second from one that times out under moderate load. Cassandra was designed from the ground up for linear scalability, [...]