diff options
| author | Jose Luis Duran <jlduran@users.noreply.github.com> | 2015-01-11 17:17:21 -0200 |
|---|---|---|
| committer | Jose Luis Duran <jlduran@users.noreply.github.com> | 2015-01-11 17:17:21 -0200 |
| commit | 4d4f2df36e46558a913efb3a58a6e21fba21f937 (patch) | |
| tree | 7b379521aa727e561aed514638c5f4c292ee9328 /guides/source | |
| parent | 7b47f422cf367db4918be76c417d9db592a04adf (diff) | |
| download | rails-4d4f2df36e46558a913efb3a58a6e21fba21f937.tar.gz rails-4d4f2df36e46558a913efb3a58a6e21fba21f937.tar.bz2 rails-4d4f2df36e46558a913efb3a58a6e21fba21f937.zip | |
Re-add section in SQL Caching
This section was accidentally removed in 4b5e424441149cf0f61a8182f4a92999577ce59a, and partially re-added in dc14b893e5904acb37ac327478f3880f33094b7a.
[ci skip]
Diffstat (limited to 'guides/source')
| -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 ------------ |