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| author | Piotr Sarnacki <drogus@gmail.com> | 2013-07-22 08:05:07 -0700 |
|---|---|---|
| committer | Piotr Sarnacki <drogus@gmail.com> | 2013-07-22 08:05:07 -0700 |
| commit | 782d2f6f83c39e9cfd2a8e650250a74c65458f88 (patch) | |
| tree | d40e9d915860e8a8a53cdd5c7560764e9db7af4c /activesupport/CHANGELOG.md | |
| parent | ecd70039ba191371f3735d7a6336e4cfc6be83df (diff) | |
| parent | 51d9b9a821a8f3f11fc5f52321df6ee05e4e1327 (diff) | |
| download | rails-782d2f6f83c39e9cfd2a8e650250a74c65458f88.tar.gz rails-782d2f6f83c39e9cfd2a8e650250a74c65458f88.tar.bz2 rails-782d2f6f83c39e9cfd2a8e650250a74c65458f88.zip | |
Merge pull request #11546 from swoop-inc/ss_memory_store_cache_size
[Fixes #11512] improves cache size calculation in MemoryStore
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. |