diff options
| -rw-r--r-- | guides/source/3_2_release_notes.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/guides/source/3_2_release_notes.md b/guides/source/3_2_release_notes.md index 68a47be14f..afa06e002c 100644 --- a/guides/source/3_2_release_notes.md +++ b/guides/source/3_2_release_notes.md @@ -101,7 +101,7 @@ Rails 3.2 comes with a development mode that's noticeably faster. Inspired by [A ### Automatic Query Explains -Rails 3.2 comes with a nice feature that explains queries generated by ARel by defining an `explain` method in `ActiveRecord::Relation`. For example, you can run something like `puts Person.active.limit(5).explain` and the query ARel produces is explained. This allows to check for the proper indexes and further optimizations. +Rails 3.2 comes with a nice feature that explains queries generated by Arel by defining an `explain` method in `ActiveRecord::Relation`. For example, you can run something like `puts Person.active.limit(5).explain` and the query Arel produces is explained. This allows to check for the proper indexes and further optimizations. Queries that take more than half a second to run are *automatically* explained in the development mode. This threshold, of course, can be changed. |