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Database insights, best practices, and technical deep-dives.
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SQL Query Analyzer
Paste your slow SQL query and get an instant diagnosis. 100 rules covering full table scans, missing indexes, function abuse, bad joins, and more.
Use FreeEXPLAIN ANALYZE Explainer
Paste your PostgreSQL EXPLAIN ANALYZE output and get plain-English explanations. Identifies bottlenecks, bad row estimates, and disk spills instantly.
Use FreeDatabase Cost Calculator
Find out how much your slow database is costing you per month. Enter query times, server costs, and engineer hours to get the exact monthly waste.
Use FreeCloud DB Overspend Calculator
Enter your monthly cloud database bill and CPU utilization. Get an estimate of savings from right-sizing and Reserved Instance coverage.
Use FreeN+1 Query Impact Calculator
Quantify N+1 query overhead — extra DB load, slower p99 response times, and wasted monthly spend. Shows the ORM-specific fix for your stack.
Use FreeData Infrastructure Health Score
12 questions across 6 areas — cloud costs, caching, AI/vector, operations, cloud config, and API performance. Get scored and see your top 3 gaps.
Use Freepgvector vs Vector DB Advisor
Answer 6 questions about your AI workload. Get a concrete recommendation — pgvector, pgvector+pgvectorscale, or managed vector DB — with the reasoning.
Use FreeRedis Cache ROI Calculator
Model the impact of adding Redis. See projected latency reduction, database load drop, and monthly cost savings before you build anything.
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Practical resources you can use today
Database Health Checklist
50+ items covering performance, security, reliability, and operations. Run through this quarterly or before any major release.
Read FreePostgreSQL Migration Guide
7-phase step-by-step process for migrating from Oracle or SQL Server to PostgreSQL — with zero-downtime cutover approach.
Read FreeQuery Optimization Workshop
6-module self-paced workshop on finding, diagnosing, and fixing slow database queries — with real SQL examples throughout.
Read FreeTechnical Articles
In-depth guides from our database performance team
February 18, 2026
· 18 min readPerformanceHow to Debug Slow SQL Queries: A Step-by-Step Guide
Learn how to find, diagnose, and fix slow SQL queries using EXPLAIN ANALYZE, slow query logs, and proven debugging techniques. Covers missing indexes, N+1 patterns, full table scans, and query rewriting — with real SQL examples throughout.
February 25, 2026
· 14 min readComparisonPostgreSQL vs MySQL in 2026: A Complete Guide to Choosing the Right Database
A complete PostgreSQL vs MySQL comparison for 2026. Performance benchmarks, JSON support, replication models, licensing, migration complexity, and a practical decision framework for CTOs, architects, and developers.
March 3, 2026
· 16 min readOperationsDatabase Backup and Recovery: A Complete Best Practices Guide
Everything you need to build a complete database backup strategy: full vs incremental vs differential backups, PITR setup, RTO/RPO planning, tool comparison (pg_basebackup, WAL-G, Barman), recovery testing procedures, and compliance retention requirements.
March 5, 2026
· 15 min readCloudAWS RDS Performance Tuning: A Complete Optimization Guide
How to get maximum performance from AWS RDS: choosing the right instance class, tuning PostgreSQL parameter groups, configuring read replicas, optimising GP3 storage and IOPS, setting up CloudWatch and Performance Insights, cutting costs, and when to migrate to Aurora.
May 12, 2026
· 11 min readCloudAWS RDS Extended Support Is Doubling in 2026 — Here's What You Owe and How to Stop It
MySQL 5.7 and PostgreSQL 11 on RDS entered Extended Support Year 3 in 2026, and AWS doubled the rate on March 1. Most teams don't know what they're paying. This guide shows exactly what the charges are, how to find them in your bill, and the three upgrade paths that eliminate the cost.
May 16, 2026
· 12 min readPerformancePostgreSQL Connection Exhaustion: How to Fix 'Too Many Connections' with PgBouncer
When your application hits PostgreSQL's connection limit, every new connection fails. The database looks unhealthy, the app returns 500s, and engineers blame the database — but the database is usually fine. This guide covers why the problem occurs and how to deploy PgBouncer to eliminate it.
May 19, 2026
· 10 min readPerformanceYour API Is Slow. Your Database Probably Isn't the Problem.
80% of slow API latency problems trace to the application layer — N+1 queries, connection pool exhaustion, SELECT *, or serial calls that could be parallel. Learn how to isolate where the time actually goes and fix each cause. Includes a real case: p99 from 4.2 seconds to 180ms.
May 22, 2026
· 12 min readPerformancePostgreSQL 18: Every Performance Improvement You Need to Know
PostgreSQL 18 beta (2026) brings 20–30% short query throughput gains, major vacuum improvements, enhanced query planner statistics, reliable logical replication, and pgvector improvements for AI workloads. Here's what changed and how to test it before upgrading production.
May 26, 2026
· 11 min readOperationsManaged DBA vs. Hiring In-House: The Full Cost Breakdown for 2026
Most engineering leaders underestimate the true cost of an in-house DBA by 40–60% because they think salary, not total cost. This guide breaks down the full economics of both models, the scenarios where each wins, and a side-by-side comparison across four company sizes.
June 16, 2026
· 13 min readCloudThe Database FinOps Guide: Stop Overpaying for Cloud Databases
Cloud database bills grow in ways that are hard to see until the number is already embarrassing. Overprovisioned instances, idle read replicas, storage accumulating quietly, queries doing full table scans on every request — each adds a compounding line item. This guide covers the 7 biggest sources of RDS waste, the 4-step FinOps cycle, the full AWS RDS optimisation checklist, and a real SaaS example saving $36,000/year.
June 16, 2026
· 12 min readComparisonpgvector vs Pinecone in 2026: Benchmarks, Cost, and When to Use Each
Most teams evaluating vector search assume a serious AI application needs a dedicated vector database. That assumption is increasingly outdated. pgvector's HNSW indexing, PostgreSQL 18's throughput gains, and managed PostgreSQL offerings have shifted the decision boundary. This guide covers HNSW recall benchmarks, cost at three workload sizes, the hybrid SQL+vector search advantage most comparisons miss, and the exact conditions where Pinecone becomes the right call.
June 16, 2026
· 10 min readPerformanceWhat Is the N+1 Query Problem? (And Why It Kills APIs)
Your API takes four seconds to load. The database CPU looks healthy. You add a read replica — nothing changes. You upgrade the instance — still slow. Someone profiles the request and finds one API call is generating 501 database queries. This is the N+1 query problem: one of the most common and expensive performance issues in production. It doesn't throw errors and hides inside clean ORM code. This guide covers what it is, why it happens, how to detect it with pg_stat_statements, and five ways to fix it permanently.
June 16, 2026
· 11 min readCloudWhy Is My AWS RDS Bill So High? A Diagnostic Guide
Your AWS RDS bill is high for a reason — usually several. This guide covers the seven most common causes: overprovisioned compute, forgotten read replicas, inefficient queries, storage waste, gp2 storage, on-demand pricing, and solving the wrong problem entirely. Includes CloudWatch diagnostic commands, pg_stat_statements queries, and a 15-minute audit checklist.