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Diffstat (limited to 'activesupport/CHANGELOG.md')
| -rw-r--r-- | activesupport/CHANGELOG.md | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md index c00cbaaa08..918a43bf36 100644 --- a/activesupport/CHANGELOG.md +++ b/activesupport/CHANGELOG.md @@ -143,4 +143,17 @@ *Daniel Schierbeck* +* Improve `ActiveSupport::Cache::MemoryStore` cache size calculation. + The memory used by a key/entry pair is calculated via `#cached_size`: + + def cached_size(key, entry) + key.to_s.bytesize + entry.size + PER_ENTRY_OVERHEAD + end + + The value of `PER_ENTRY_OVERHEAD` is 240 bytes based on an [empirical + estimation](https://gist.github.com/ssimeonov/6047200) for 64-bit MRI on + 1.9.3 and 2.0. GH#11512 + + *Simeon Simeonov* + Please check [4-0-stable](https://github.com/rails/rails/blob/4-0-stable/activesupport/CHANGELOG.md) for previous changes. |