[mapserver-users] Mapserver caching and /vsicurl/

[Even Rouault]

> Can anyone shed some light on this? How can I update imagery in s3 served
> via Postgis tile index pointing to /vsicurl/ paths without restarting
> mapserver?

You can't with the actual state of code in GDAL. This is purely a GDAL 
behaviour. Currently GDAL has a global 16 MB cache for all /vsicurl/ URLs: 1000 
blocks of 16 KB each, with a least recently used eviction strategy. So yes it 
assumes static content.
With some extra code we could imagine to evict with an option the blocks for a 
/vsicurl/ URL when the file descriptor is closed for example.

Even

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