The VictoriaMetrics Observability Blog

The most expensive half-hour of an incident.

Two teams run the same stack. One stays calm, one firefights. The difference isn’t the software. It’s knowledge.

VictoriaMetrics August 2026 Ecosystem Updates

The VictoriaMetrics team shipped two core releases with important security fixes. The vmanomaly team shipped two updates with improved scaling and more efficient models. Plus, Tech Talks are back, this time demoing AI-assisted incident troubleshooting.

Two cats, two dogs, four vendors, and the model the AI couldn't find (Tech Talk Companion)

Tech Talk #13: Mathias runs his house and four pets on Home Assistant, VictoriaMetrics, and vmanomaly. Then the AI picked the wrong model. Watch on demand.

PostgreSQL 19 interactive tour

An interactive tour of what’s new in PostgreSQL 19: property graph queries, REPACK, plan advice, temporal updates, and more, with short runnable SQL examples you can edit and run in the browser.

The Life of a Metric

Follow a single metric through its whole life inside VictoriaMetrics: born as a counter in your process, exported over the wire, given an identity and an inverted-index entry, written through an LSM tree, compressed into columnar blocks on disk, read back by a rate() query, downsampled as it ages, and finally deleted when retention runs out.

How Go’s Built-in Map Works with Swiss Tables

Go 1.24 replaced the built-in map’s bucket-based runtime with Swiss Tables. This article explains groups, control bytes, H1 and H2, probing, table growth, directories, deletion, load factor, and the experimental split-group layout.

Understanding Go's sync.Map from API to Hash Trie

Go’s sync.Map now uses a hash trie. This article builds the implementation from a normal map, then explains lock-free reads, fine-grained writer locking, collisions, retries, deletion, Clear, Range, and the trade-offs against map plus RWMutex.

Open Source Is Good Marketing

Open source and commercial marketing often seem at odds, but open source often needs marketing, and open source itself is often good marketing. This blog post explains how open source supports our marketing goals and how we use marketing to support open source growth.

Observability's Sixth Sense: Grounding Anomaly Detection in Reality

Learn how VictoriaMetrics combines machine learning, MCP, and natural-language workflows to simplify observability with anomaly detection and reduce operational overhead.

What's new in VictoriaMetrics Anomaly Detection (Q2 2026)

The Q2 2026 vmanomaly update introduces Temporal Envelope, a redesigned UI, faster online-model execution, and an AI-assisted workflow that turns natural-language monitoring goals into tested configurations and alerting rules.