[Lainow]

Checklist before requesting a review

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.

Description

Each generated number read the plugin configuration again: 9 queries per asset. The generation switch, the per-type rows and the enabled itemtypes are now read once per request. The cache is cleared when a configuration is saved, added or removed. The counter and its reset date are still read from the database for each number.

Benchmark

GLPI 11.0, 2 000 computers, generation on for computers.

Scenario	SQL before	SQL after	Time before	Time after
Massive action "Regenerate inventory number", 50 computers	1 142 queries (450 on plugin tables)	844 (152)	940 ms	925 ms (not significant)
Computer creation (number generated), plugin queries	7	5	39 ms	within noise

This is a small gain: most of the time is GLPI updating each asset.

Tests

A new test changes the template and the generation switch between two generations in the same process. It checks that each change is seen and that the numbers stay consecutive.