[mapserver-users] Mapcache WMTS tile artifacts

[Yoann CHARIEAU]

Hi everyone, 

I have configured a mapcache server with a few sources. 
Everything seems to work fine except for some wmts sources : i get random purple/blue artifacts on tiles (screenshots : https://imgur.com/a/hXgWxao) 
So far i tried playing around gdal_wmts xml config file, with different caches (disk, sqlite, memcache), formats (png and jpg, with rgb and ycbcr colorspace) and grids, and also tried updating gdal. 
Strangest thing is that artifacts disappear on tile expiration or by manually deleting tiles. 
Right now i’m thinking about network issues. 
Has anyone ever encountered these kind of artifacts ? 

Thanks ! 

Yoann 
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