increase cache-invalidation performance settings?

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In setting up my v3.10.1 cluster I found that using the newer cache-invalidation features seemed to help performance in at least some ways; but I haven't seen a lot of discussion about them following the initial introduction.

    features.cache-invalidation: on
    features.cache-invalidation-timeout: 600
    performance.cache-invalidation: on
    performance.md-cache-timeout: 600

Has anyone noticed any gotchas in using these parameters? Also, has there been any talk of increasing the allowed values for the md-cache-timeout and cache-invalidation-timeout settings?

TIA,

Dan
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