Thoughts, tutorials, and deep dives.
Pymalloc holds onto memory it no longer needs, which makes RSS a misleading signal in Kubernetes. Here's why your HPA keeps scaling up and never scales back down — and what you can do about it.
An engineer-oriented overview of TCP congestion and how fundamental physical limits restrict scalability due to assumptions in established standards.
TLDR: Over the last few weekends, I've been experimenting with a distributed systems project that tackles a deceptively simple problem: generating atomic sequence numbers across multiple nodes.
When discussing how PostgreSQL DBAs prepare for upgrades (or migrations), you might get a variety of responses, but most follow a similar high-level process.