DDC-788: Metadata Caching with var_export #968

New Issue

admin · 2026-01-22T12:57:39+01:00

admin commented

2026-01-22 12:57:39 +01:00

Originally created by @doctrinebot on GitHub (Sep 4, 2010).

Originally assigned to: @beberlei on GitHub.

Jira issue originally created by user @beberlei:

An improvement in the metadata caching strategy was brought to my attention.

Instead of serializing away the instance, we could var_export() it, implement ClassMetadataInfo::__var_export() and write that to a file and require it:

<?php
return classMetadataInfo::**varExport(...);

Advantages:

No serialize/unserialize overhead
Metadata is still cached in op-code cache (APC) since its just a PHP file...
This can be done with a new cache driver

Disadvantages:

Needs a new directory to write code to.

Originally created by @doctrinebot on GitHub (Sep 4, 2010). Originally assigned to: @beberlei on GitHub. Jira issue originally created by user @beberlei: An improvement in the metadata caching strategy was brought to my attention. Instead of serializing away the instance, we could var_export() it, implement ClassMetadataInfo::__var_export() and write that to a file and require it: ``` <?php return classMetadataInfo::**varExport(...); ``` Advantages: 1. No serialize/unserialize overhead 2. Metadata is still cached in op-code cache (APC) since its just a PHP file... 3. This can be done with a new cache driver Disadvantages: 1. Needs a new directory to write code to.

admin added the Improvement label 2026-01-22 12:57:39 +01:00

admin closed this issue

2026-01-22 12:57:40 +01:00

admin commented

2026-01-22 12:57:42 +01:00

@doctrinebot commented on GitHub (Sep 4, 2010):

Comment created by romanb:

For what its worth, I tried this once and gave up on the idea due to the fact that there were no noticable performance gains.

@doctrinebot commented on GitHub (Sep 4, 2010): Comment created by romanb: For what its worth, I tried this once and gave up on the idea due to the fact that there were no noticable performance gains.

admin commented

2026-01-22 12:57:43 +01:00

@doctrinebot commented on GitHub (Sep 4, 2010):

Comment created by @beberlei:

I developed this in a branch to test the performance, and it was worse than APC. So this issue can be dropped.

@doctrinebot commented on GitHub (Sep 4, 2010): Comment created by @beberlei: I developed this in a branch to test the performance, and it was worse than APC. So this issue can be dropped.

admin commented

2026-01-22 12:57:44 +01:00

@doctrinebot commented on GitHub (Sep 4, 2010):

Issue was closed with resolution "Invalid"

@doctrinebot commented on GitHub (Sep 4, 2010): Issue was closed with resolution "Invalid"

admin referenced this issue

2026-01-22 16:02:35 +01:00

[PR #968] [CLOSED] Json_Array type returns empty array when used with nullable annotation #8976

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