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Delete APCu keys as we process them, instead of clearing the whole cache at once; use an APCu lock var instead of a lockfile in /tmp/ when rebuilding the library cache

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This commit is contained in:
Alex Cabal 2020-03-01 10:20:26 -06:00
parent d58ac00ce3
commit e3bf6115c8
1 changed files with 17 additions and 8 deletions
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25
lib/Library.php
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@ -122,14 +122,16 @@ class Library{
}
public static function RebuildCache(): void{
// We create and check a lockfile because this can be a long-running command.
// We check a lockfile because this can be a long-running command.
// We don't want to queue up a bunch of these in case someone is refreshing the index constantly.
$lockfile = '/tmp/rebuild-library-cache-lock';
if(file_exists($lockfile)){
$lockVar = 'library-cache-rebuilding';
try{
$val = apcu_fetch($lockVar);
return;
}
touch($lockfile);
catch(Safe\Exceptions\ApcuException $ex){
apcu_store($lockVar, true);
}
$ebooks = [];
$collections = [];
@ -177,11 +179,11 @@ class Library{
}
}
apcu_clear_cache();
apcu_delete('ebooks');
apcu_store('ebooks', $ebooks);
// Before we sort the list of ebooks and lose the array keys, store them by individual ebook
apcu_delete(new APCUIterator('/^ebook-/'));
foreach($ebooks as $ebookWwwFilesystemPath => $ebook){
apcu_store('ebook-' . $ebookWwwFilesystemPath, $ebook);
}
@ -201,6 +203,7 @@ class Library{
$ebooks = array_reverse($ebooks);
apcu_delete('ebooks-newest');
apcu_store('ebooks-newest', $ebooks);
// Sort ebooks by title alpha, then save
@ -208,6 +211,7 @@ class Library{
return strcmp(mb_strtolower($a->Authors[0]->SortName), mb_strtolower($b->Authors[0]->SortName));
});
apcu_delete('ebooks-alpha');
apcu_store('ebooks-alpha', $ebooks);
// Sort ebooks by reading ease, then save
@ -225,6 +229,7 @@ class Library{
$ebooks = array_reverse($ebooks);
apcu_delete('ebooks-reading-ease');
apcu_store('ebooks-reading-ease', $ebooks);
// Sort ebooks by word count, then save
@ -240,21 +245,25 @@ class Library{
}
});
apcu_delete('ebooks-length');
apcu_store('ebooks-length', $ebooks);
// Now store various collections
apcu_delete(new APCUIterator('/^collection-/'));
foreach($collections as $collection => $ebooks){
apcu_store('collection-' . $collection, $ebooks);
}
apcu_delete(new APCUIterator('/^tag-/'));
foreach($tags as $tag => $ebooks){
apcu_store('tag-' . $tag, $ebooks);
}
apcu_delete(new APCUIterator('/^author-/'));
foreach($authors as $author => $ebooks){
apcu_store('author-' . $author, $ebooks);
}
unlink($lockfile);
apcu_delete($lockVar);
}
}