How is Tmall's picture compression strategy solved?

the same picture can be compressed into different sizes or even different types of pictures according to the following parameters. How is this done

https://img.alicdn.com/imgextra/i1/2064892827/TB20kU.iLxNTKJjy0FjXXX6yVXa_!!2064892827.jpg_490x490q100.jpg_.webp  https://img.alicdn.com/imgextra/i1/2064892827/TB20kU.iLxNTKJjy0FjXXX6yVXa_!!2064892827.jpg_490x490q100.jpg    https://img.alicdn.com/imgextra/i1/2064892827/TB20kU.iLxNTKJjy0FjXXX6yVXa_!!2064892827.jpg

Server-side compression images

Mar.05,2021

server processing, that's just a parameter. The server cuts the image according to your parameters

probably studies the thumbnail of nginx configuration image. https://github.com/oupula/ngx.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3500c-2bf50.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3500c-2bf50.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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