[MapServer-users] Multiple requests to s3 bucket to the same Tiff after GetMap request

[Marcin Niemyjski]

Hello,
I wasn't happy with the time it took for the GetMap request to complete, so I decided to check apache's error logs. I realized that S3 Get request is performed multiple times and I have no idea why.

Below you can see GET request which appears in log file of one request 5 times.

[Fri Feb 10 15:49:45.456184 2023] [cgi:error] [pid 1300229] [client 127.0.0.1:37842] AH01215: > GET /DIAS/Sentinel-1-COG/SAR/GRD-COG/2022/03/01/S1A_IW_GRDH_1SDV_20220301T045236_20220301T045301_042123_0504C2_3E5D_COG.SAFE/measurement/s1a-iw-grd-vh-20220301t045236-20220301t045301-042123-0504c2-002.tiff HTTP/1.1\r: /usr/lib/cgi-bin/mapserv

The way my mapfile gets source raster data:

TileIndex -> VRT -> COG with Ground Control Points (this is caused by GCP)

I would be grateful if you could check full log file -> https://pastecode.io/s/xdyuay0f

Thanks,
Marcin




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