1. Current URL: https://xxx.cloudfastin.com/static/xxx/98a10389-0831-4aa9-9335-3c2c3f46fd7b/assets/css/app.a572190.css , its content value is: 6666 . As shown in Figure 1
2. Update the content of assets/css/app.a572190.css again to: 7777, and find that the content in the URL remains unchanged.
3. The code implementation is as follows
return $this->filesystemManager
->disk($this->config->get('theme_asset.filesystem.disk'))
->put(
$path,
$contents,
$this->config->get('theme_asset.filesystem.options')
);
4. Print the $options of the put method, its value is as follows
array(2) {
["ACL"]=>
string(11) "public-read"
["CacheControl"]=>
string(24) "max-age=31536000, public"
}
5. Because the app.a572190.css file is generated after compilation, when the source file of this CSS file is re-edited, a new file named app.a572191.css will be generated. The operation on S3 is to first generate the new file (app.a572191.css), and then delete the old file (app.a572190.css). Therefore, the fact that the content of the CSS file with the same name remains unchanged will not affect the pages using this CSS file, because the page actually references the newly named app.a572191.css file.