Topic
observability
Metrics, monitoring and cost signals: query-language changes, monitoring platform upgrades and what to measure before trusting a dashboard.
4 engineering notes.
- Zabbix 6.0 and 7.0 upgrade and configuration traps, and where they return in 8.0The upgrade and configuration mistakes Zabbix documented for 6.0 and 7.0, the same traps in 8.0's notes, and a tested 7.0 to 8.0 upgrade in containers.
- Prompt cache misses are a silent cost leak in coding agentsA background agent that fires after the cache expires pays full price to rebuild it. How to read the cache numbers and stop the leak.
- Zabbix 8.0 is a release candidate: inventory before the LTSZabbix 8.0 is at release candidate and planned as the next LTS. A probe to record the server, database and frontend state the upgrade depends on.
- Prometheus 3 changes queries, not just the binaryThe 3.0 migration guide is a list of silent behaviour changes: regex newlines, left-open ranges, normalized le labels and strict scrape content types.
Related service: Reliability Engineering →
