Commits
- pref: 减少重复查询 (0ed14fc) @Akizon77
- fix(metricstore): do not delete metric history during startup (a06d922) @Akizon77
- remove undefined metrics before reclaiming space (5ea32c4) @Akizon77
- pref: reduce cpu usage while querying metrics (16769d5) @Akizon77
- pref: mem alloc (5879d4b) @Akizon77
Full Changelog: 1.4.1...1.4.2