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| author | Rafael Mendonça França <rafaelmfranca@gmail.com> | 2015-01-11 17:57:50 -0200 |
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| committer | Rafael Mendonça França <rafaelmfranca@gmail.com> | 2015-01-11 17:57:50 -0200 |
| commit | 0e316ea2c4ceb1eac20a1f62b0e9db23fc6b41c8 (patch) | |
| tree | a11627ddc3ec5a90d798c4ab8879a0e32d7907aa /guides | |
| parent | 6c7af3a2641c0b281246334f56b3959396f1ae05 (diff) | |
| parent | 4d4f2df36e46558a913efb3a58a6e21fba21f937 (diff) | |
| download | rails-0e316ea2c4ceb1eac20a1f62b0e9db23fc6b41c8.tar.gz rails-0e316ea2c4ceb1eac20a1f62b0e9db23fc6b41c8.tar.bz2 rails-0e316ea2c4ceb1eac20a1f62b0e9db23fc6b41c8.zip | |
Merge pull request #18451 from jlduran/guides-sql-caching
Re-add section in SQL Caching [ci skip]
Diffstat (limited to 'guides')
| -rw-r--r-- | guides/source/caching_with_rails.md | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/guides/source/caching_with_rails.md b/guides/source/caching_with_rails.md index 61b991df61..d5477eb72d 100644 --- a/guides/source/caching_with_rails.md +++ b/guides/source/caching_with_rails.md @@ -184,6 +184,10 @@ class ProductsController < ApplicationController end ``` +The second time the same query is run against the database, it's not actually going to hit the database. The first time the result is returned from the query it is stored in the query cache (in memory) and the second time it's pulled from memory. + +However, it's important to note that query caches are created at the start of an action and destroyed at the end of that action and thus persist only for the duration of the action. If you'd like to store query results in a more persistent fashion, you can in Rails by using low level caching. + Cache Stores ------------ |