[Cache] Handle arbitrary key length when the backend cant using hashing #20037
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nicolas-grekas
commented
Sep 23, 2016
| return $this->namespace.$key; | ||
| } | ||
| if (strlen($id = $this->namespace.$key) > $this->maxIdLength) { | ||
| $id = $this->namespace.substr_replace(base64_encode(md5($key, true)), ':', -2); |
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Namespace excluded, this is always 23 chars long, trailing padding = removed.
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The added trailing : is to prevent any collision between hashed keys and non-hasked keys.
nicolas-grekas
commented
Sep 23, 2016
| CacheItem::validateKey($version); | ||
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| if (!apcu_exists($version.':'.$namespace)) { | ||
| if (!apcu_exists($version.'@'.$namespace)) { |
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Just because : is a nice separator for namespace, thus had to change here. @ looks good also for version :)
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It's all about the looks ;)
nicolas-grekas
commented
Sep 23, 2016
| protected function __construct($namespace = '', $defaultLifetime = 0) | ||
| { | ||
| $this->namespace = '' === $namespace ? '' : $this->getId($namespace); | ||
| $this->namespace = '' === $namespace ? '' : $this->getId($namespace).':'; |
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: is a reserved char per psr6 so we use it internally to be free from any collision when concatenating keys and namespace later on
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Thank you @nicolas-grekas. |
fabpot
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Sep 24, 2016
…ant using hashing (nicolas-grekas) This PR was merged into the 3.2-dev branch. Discussion ---------- [Cache] Handle arbitrary key length when the backend cant using hashing | Q | A | ------------- | --- | Branch? | master | Bug fix? | no | New feature? | yes | BC breaks? | no | Deprecations? | no | Tests pass? | yes | Fixed tickets | - | License | MIT | Doc PR | - Saving some bits from #19521 :) Already awaited by PdoAdapter which defines the property. Commits ------- 11f448f [Cache] Handle arbitrary key length when the backend cant using hashing
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Saving some bits from #19521 :) Already awaited by PdoAdapter which defines the property.