Postgres InternalsJul 19, 20266 minYour Schema is a Bigger Performance Problem Than Your Queries
Stop tuning queries. A bad primary key or a wide jsonb column creates more irreversible performance liability than a thousand slow queries combined. The optimizer is downstream of the schema.
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Postgres InternalsJul 16, 20267 minZonemaps vs. B-Trees vs. Partitioning: A Costly Guessing Game
Most teams default to B-tree indexes, creating massive write amplification and maintenance debt. Understanding the true cost of B-trees, partitions, and BRIN indexes isn't optional—it's survival.
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Postgres InternalsJul 13, 20267 minThe Zonemap-Shaped Hole in Postgres
Postgres has no equivalent to Oracle's Zonemaps for fast filtered scans. People use BRIN and are disappointed. Here's what actually works, why BRIN fails, and the liability you create by choosing wrong.
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Postgres InternalsJul 1, 20267 minWhen to Partition in Postgres, and When Not To
Stop partitioning by row count. On Aurora, it's often a performance trap. The real reasons are retention, lock isolation, and partition-wise joins—and choosing the wrong key is an irreversible liability.
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ProductJun 27, 20268 minDeepSQL on the CLI: the brain for your database, where you already work
Big release. DeepSQL ships as a CLI — DBA, BI, and Schema Guardian in one prompt, grounded in your live schema, EXPLAIN plans, and DDL history. Not a text-to-SQL toy.
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Database CostJun 25, 20267 minThe Overprovisioning Tax: Your Biggest Cloud DB Expense is Ignorance
You're paying for a db.r6g.16xlarge but your p95 CPU is 12%. This isn't a safety net, it's a multi-thousand dollar monthly tax on technical debt. Here's how to stop paying it.
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Database CostJun 23, 20267 minWhy Your Aurora Bill Doubled (And It's Not Your Traffic)
Your Aurora bill is exploding from I/O you don't even see. It's not traffic, it's inefficient query plans, oversized instances, and dev-cluster sprawl draining your budget. Here's the engineering deep dive.
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DB OperationsJun 23, 20267 minAutovacuum Isn't Your Friend: A Field Guide to High-Write Postgres
Postgres's default autovacuum is a one-size-fits-all daemon that fails catastrophically at scale. It leads to bloat, I/O storms, and wraparound panics. Here’s the internal mechanics of why it breaks and what to do about it.
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Query OptimizationJun 22, 20267 minThe ROI of an Index: Why `hypopg` and `pg_stat_statements` Aren't Enough
Index advisors see a slow query and suggest an index. They're dangerously wrong. They ignore the real cost: WAL bloat, slower writes, and maintenance hell. It’s time to calculate the full ROI of an index.
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Query OptimizationJun 19, 20267 minAnatomy of a 4-Second Query: How an AI DBA Finds the Root Cause in 30 Seconds
A 4-second query lands on your desk. You add the 'obvious' index, but latency barely moves. Here's the deep-dive into Postgres internals that a human often misses but an AI DBA catches instantly.
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DB ObservabilityJun 16, 20266 minYour SIEM is Blind to Data Exfiltration
Security tools watch for GRANTs and failed logins while insiders exfiltrate your entire user table with a single SELECT *. Logs are blind to query cost and row counts—the only metrics that matter for catching insider threats.
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Query OptimizationJun 14, 20267 minThe $0 Fix: Why Your MySQL Indexes Aren't Working
Your indexes exist. Your queries are still slow. The problem isn't your hardware, it's non-SARGable predicates forcing full table scans. Here's how to fix them.
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DB ObservabilityJun 7, 20267 minWe Killed Datadog DBM. Here's What Broke.
General-purpose monitoring tools show you charts. They don't find regressions. We turned off Datadog DBM and caught more real Postgres issues in the first week with a plan-aware tool.
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Data EngineeringJun 4, 20267 minSelf-Serve BI is a Denial-of-Service Attack Waiting to Happen
You connected a shiny new 'Ask our data' bot to Slack. Now your production Postgres is crippled by sequential scans from the sales team. Here's the anatomy of the failure and how to fix it.
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Data EngineeringMay 31, 20267 minLooker's Semantic Layer is a Prison. Here's The Escape Key.
Looker was built for a world before columnar warehouses and ubiquitous LLMs. Its semantic layer, once a feature, is now a liability that costs you engineers, latency, and six-figure contracts.
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Database CostMay 28, 20267 minThe Dashboard Tax: How 10 Queries Quietly Bankrupt Your Aurora Bill
Your BI dashboards are a hidden tax on your database. A few slow, recurring queries can generate millions of needless IOs, quietly inflating your Aurora bill by tens of thousands per month. Here’s the math, and how to stop it.
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Database CostMay 27, 20268 minMaterialized Views on Aurora Postgres: Your Most Expensive, Unaudited Line Item
Teams use Materialized Views to fix slow dashboards, then get blindsided by the six-figure Aurora I/O bill. A single `REFRESH` running on a cron job is likely costing you more than your lead engineer's salary.
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Query OptimizationMay 27, 20269 minCreating indexes is easy. Dropping them is what saves your Aurora bill.
Every Postgres team I meet has an index problem. It's almost never "we need more indexes." It's "we're paying for 40+ indexes nobody reads, and they're killing writes, vacuum, and the monthly bill."
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Database CostMay 26, 20267 minWhy your Aurora Postgres bill doubled in 6 months — and it isn't traffic
Aurora bills don't double because of traffic. They double because of I/O patterns nobody is watching. Here's the autopsy, with the fixes a senior DBA would actually ship.
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