VictoriaMetrics Observability Blog

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Observability Lessons From OpenAI

OpenAI applies observability to autonomous AI agents using the VictoriaMetrics Stack and OpenTelemetry. Learn to build your own local setup with metrics, logs, and traces that help LLMs test, benchmark, and iterate autonomously.

VictoriaLogs Basics: What You Need to Know, with Examples & Visuals

Cluster mode in VictoriaLogs is not a separate build. It is the same victoria-logs binary started with different flags, so you can scale out without a migration step. Storage nodes persist data on disk, while gateway nodes can stay stateless by pointing to storage with -storageNode. It also ships with practical safety switches, like read-only protection when -storageDataPath runs low and optional partial results when a storage node is down.

VictoriaLogs Practical Ingestion Guide for Message, Time and Streams

VictoriaLogs uses three core concepts: message, time, and stream fields to structure log data. Too few streams create fat streams that are slow to query, while too many unique stream combinations create high cardinality problems…

Monotonic and Wall Clock Time in the Go time package

Operating systems expose a wall clock that can leap or slew with NTP and a monotonic clock that never runs backward. In Go, only time.Now (might) carries both readings, while values from time.Parse, time.Date, etc., are wall-clock-only—so naïve equality checks or time.Since on those can mislead when the system clock shifts.

vmagent: Key Features Explained in Under 15 Minutes

vmagent is a lightweight agent for collecting and forwarding metrics to remote storage. It supports relabeling, sharding, replication, aggregation, deduplication, and disk buffering to ensure reliable and efficient metric delivery.

Go synctest: Solving Flaky Tests

Traditional concurrent Go tests can be flaky due to non-deterministic scheduler behavior and timing. Go 1.24’s experimental synctest feature provides deterministic testing by running goroutines in isolated ‘bubbles’ where a synthetic clock only advances when all internally managed goroutines are durably blocked.

VictoriaMetrics Components: Getting Started

VictoriaMetrics is a fast, scalable monitoring system made of modular components like vminsert, vmstorage, and vmselect. It supports both single-node and clustered setups, along with tools for backup, restore, alerting, access control, and data migration. Data can be ingested, stored, queried, backed up, and restored with high performance and minimal resource use.

VictoriaMetrics Connects with the Open Source Community at LinuxFest Northwest 2025

We have just got back from an incredible weekend representing VictoriaMetrics at LinuxFest Northwest 2025 in beautiful Bellingham, WA! 🌲🏔️

Graceful Shutdown in Go: Practical Patterns

Go applications can implement graceful shutdown by handling termination signals (SIGTERM, SIGINT) via os/signal or signal.NotifyContext. Shutdown must complete within a specified timeout (e.g., Kubernetes’ terminationGracePeriodSeconds)…