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|Title||Introduced explicit host attributes, increasing rule evaluation performance|
|Checkmk Edition||Checkmk Raw Edition (CRE)|
|Compatibility||Compatible - no manual interaction needed|
Some host attributes, like the host alias, are now stored in an explicit lookup table. The previous version created a rule for each alias, hereby causing lots of uneccessary rule evaluations. This is an internal code change, so you will not see any changes in the GUI.