v1.33.0

Changed

Renamed HCLOUD_SERVER_CACHE_TTL to HCLOUD_SERVER_CACHE_MAX_AGE. The server cache lifetime is now configured via HCLOUD_SERVER_CACHE_MAX_AGE (default 10s). Individual controllers may override this default for specific lookups — for example, the routes controller uses a longer max age. Action required: if you set HCLOUD_SERVER_CACHE_TTL, switch to HCLOUD_SERVER_CACHE_MAX_AGE; the old variable is no longer recognized.

Removed

Removed the hcops/AllServersCache.* operation metrics. The legacy AllServersCache was replaced by the shared server cache, so the following cloud_controller_manager_operations_total series labeled op="hcops/AllServersCache.*" are no longer emitted:

• hcops/AllServersCache.ByID
• hcops/AllServersCache.ByName
• hcops/AllServersCache.ByPrivateIP
• hcops/AllServersCache.getCache
• hcops/AllServersCache.refreshCache

They are superseded by the new server cache metric cloud_controller_manager_server_cache_requests_total, a counter partitioned by subsystem, mode, and result:

• subsystem: instances_v2, routes (or none when unset)
• mode: all, one, off
• result: hit, miss

cloud_controller_manager_server_cache_requests_total{subsystem="instances_v2", mode="all", result="hit"}
cloud_controller_manager_server_cache_requests_total{subsystem="routes",       mode="all", result="miss"}

Update any dashboards or alerts referencing the old op series accordingly.

Features

• cache: replace TTL with max-age
• cache: use server cache in routes controller

Bug Fixes

• cache: when api returns not found do not return an expired entry (#1271)