Cached size is not updated

[kelunik]

The cached size of files is not updated. If files are changed, this might result in a wrong content-length header.

[minbaby]

I think this bug is because of amphp/file.

StatCache cache the file state, but not update file state when file info changed.

http-server-static-content/src/DocumentRoot.php

Line 225 in a66a58a

$fileInfo->etag = \md5("{$fileInfo->path}{$fileInfo->mtime}{$fileInfo->size}{$inode}");

http-server-static-content/src/DocumentRoot.php

Line 208 in a66a58a

if (!$stat = yield $this->filesystem->stat($path)) {

https://github.com/amphp/file/blob/cc1d11993e1546e4cad9bd2de22c6ba8ff88af3c/lib/UvDriver.php#L115

https://github.com/amphp/file/blob/cc1d11993e1546e4cad9bd2de22c6ba8ff88af3c/lib/StatCache.php#L19

[bwoebi]

So, setting StatCache::ttl(0); in your server does fix it?

Generally the StatCache is a good thing, reducing latency by a good margin...
We possibly should add a file change watcher (i/anotify for example) for stat invalidation ...

[minbaby]

Yeah, we need inotify extension. if has inotify, all the thing can bu resolved.

This is two reason，first is StatCache, another is cache too.
We can't get the file stat on file changed. if We have not inodify，only update file info in every seconds

http-server-static-content/src/DocumentRoot.php

Line 144 in a66a58a

private function fetchCachedStat(string $reqPath, Request $request) {