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"With modern distributed systems performance issues can surface in unexpected ways. When it comes to database servers like PostgreSQL issues can surface as slow pages, API calls timing out, jobs not completing, or users saying that the application is "slow". These issues usually occur at 4AM, so having a good debugging methodology (and lots of coffee) baked into your brain can help with speedy remediation. The hard part is that these problems often look the same from the outside: the site is slow and nobody knows why yet…"

"Prometheus is a monitoring system that collects time series metrics from targets at regular intervals. Those metrics are stored with labels, queried with PromQL (Prometheus's custom query language), and graphed in tools like Grafana. In a typical setup, Prometheus scrapes metrics from exporters running beside the systems you care about: a node exporter that exports system metrics like CPU, memory and network utilization, a postgresql exporter that makes pg_stat* data available, or an application endpoint that exposes custom metrics. That model is powerful, but it mostly answers questions from inside the system…"

"Software supply chain attacks target the dependencies, build systems, and publishing pipelines that produce the software we run, instead of the application itself. A single compromised package can reach millions of systems before anyone notices, and once it lands, it runs with the same trust and privileges as the rest of your code. The diagram below shows where these attacks typically land along the chain: Defending against this requires controls at every one of those stages. Recent supply chain compromises Two incidents from earlier this year show just how quickly a compromised pipeline can lead to large scale security incidents: LiteLLM (March 2026): A compromised CI/CD pipeline let attackers ship malicious releases of litellm, a widely used AI infrastructure library, that harvested cloud credentials and API keys on install…"

"Over the past few months I've been doing diving deep into PostgreSQL. I've spent a good bit of my career supporting Oracle and MySQL, but over the past few years I've spent more time managing PostgreSQL. I'm super comfortable getting around a psql prompt, but wanted to really dive into the guts of PostgreSQL to take my knowledge to the next level. I started with the PostgreSQL internals documentation…"

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Troubleshooting slow PostgreSQL queries