- Critical bug in vmselect/single-node queries can corrupt increase/increase_pure/delta results; users should rollback or upgrade to v1.109.1.
- Default GOGC increased from 30 to 100 for most components to lower CPU usage (override possible), plus new UI export/import, markdown comments, Marathon service discovery, and various command‑line flags for ingestion rate, query performa...
- Multiple bugfixes across dashboards, vmalert, vmauth, vmctl, vminsert, vmselect, and storage handling improve metrics correctness, tenancy handling, and replication consistency.
v1.109.0
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Enable multitenancy via headers by default for vmselect, vminsert and vmagent (default flag changed to true), which may break existing URL patterns.
Upgrade Go builder to Go1.26.6, addressing security issues in the runtime.
Upgrade Go builder from 1.26.5 to 1.26.6 for security patches.