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[CORE][Cache] Implement listPushRight

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This commit is contained in:
Diogo Peralta Cordeiro
2022-02-27 00:29:26 +00:00
parent b630d530f4
commit d4c908c194
4 changed files with 45 additions and 8 deletions
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33
src/Core/Cache.php
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@@ -225,7 +225,7 @@ abstract class Cache
public static function exists(string $key, string $pool = 'default'): bool
{
if (isset(self::$redis[$pool])) {
return self::$redis[$pool]->exists($key);
return self::$redis[$pool]->exists($key) === 1;
} else {
// there's no set method, must be done this way
return self::$pools[$pool]->hasItem($key);
@@ -237,7 +237,13 @@ abstract class Cache
* for redis and others, trimming to $max_count if given
* TODO(hugo): $calculate = [] is the same as false miss
*
* @param string $key Cache key
* @param callable(?CacheItem $item, bool &$save): (string|object|array<int,mixed>) $calculate
* @param string $pool Cache pool being used (between different cache managers (of the same or different systems))
* @param null|int $max_count When setting cache, it trims to max count
* @param null|int $left Offset on Get
* @param null|int $right Limit on Get
* @param float $beta Likelihood of recomputing value (1 to infinity)
*/
public static function getList(string $key, callable $calculate, string $pool = 'default', ?int $max_count = null, ?int $left = null, ?int $right = null, float $beta = 1.0): array
{
@@ -314,7 +320,7 @@ abstract class Cache
/**
* Push a value to the list
*/
public static function pushList(string $key, mixed $value, string $pool = 'default', ?int $max_count = null, float $beta = 1.0): void
public static function listPushLeft(string $key, mixed $value, string $pool = 'default', ?int $max_count = null, float $beta = 1.0): void
{
if (isset(self::$redis[$pool])) {
self::$redis[$pool]
@@ -334,6 +340,29 @@ abstract class Cache
}
}
/**
* Push a value to the list
*/
public static function listPushRight(string $key, mixed $value, string $pool = 'default', ?int $max_count = null, float $beta = 1.0): void
{
if (isset(self::$redis[$pool])) {
self::$redis[$pool]
// doesn't need to be atomic, adding at one end, deleting at the other
->multi(Redis::PIPELINE)
->rPush($key, $value)
// trim to $max_count, if given
->lTrim($key, -($max_count ?? 0), -1)
->exec();
} else {
$res = self::get($key, fn () => [], $pool, $beta);
$res[] = $value;
if (!\is_null($max_count)) {
$res = \array_slice($res, -$max_count, null); // Trim away the older values
}
self::set($key, $res, $pool);
}
}
/**
* Delete a whole list at $key
*/