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[ci skip] document statement_limit

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Per discussion at https://github.com/rails/rails/issues/14645#issuecomment-40499409
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schneems 2014-04-15 13:06:20 -05:00
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guides/source/configuring.md
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@ -646,7 +646,7 @@ development:
pool: 5
```
Prepared Statements can be disabled thus:
Prepared Statements are enabled by default on PostgreSQL. You can be disable prepared statements by setting `prepared_statements` to `false`:
```yaml
production:
@ -654,6 +654,16 @@ production:
prepared_statements: false
```
If enabled, Active Record will create up to `1000` prepared statements per database connection by default. To modify this behavior you can set `statement_limit` to a different value:
```
production:
adapter: postgresql
statement_limit: 200
```
The more prepared statements in use: the more memory your database will require. If your PostgreSQL database is hitting memory limits, try lowering `statement_limit` or disabling prepared statements.
#### Configuring an SQLite3 Database for JRuby Platform
If you choose to use SQLite3 and are using JRuby, your `config/database.yml` will look a little different. Here's the development section: