- Introduced new observability features: external labels in templates, $rawParams/$params/$path variables, a metric for the TSDB WAL segment, and a scrape‑series‑added metric.
- Implemented numerous bug fixes and stability improvements across TSDB (disk‑space handling, empty labels, tombstone references), discovery integrations, promtool POST usage, web asset content types, and remote storage metric cleanup.
2.10.0 / 2019-05-25
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