「データベース接続持続時間を増やす」の版間の差分
Mitsuhiro Yoshida (トーク | 投稿記録) 編集の要約なし |
Mitsuhiro Yoshida (トーク | 投稿記録) 編集の要約なし |
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15行目: | 15行目: | ||
[[Category: 管理者]] | [[Category: 管理者]] | ||
[[Category: パフォーマンス]] | [[Category: パフォーマンス]] | ||
[[en: Increasing_the_database_connection_lifetime]] |
2007年4月15日 (日) 16:59時点における版
作成中です - Mitsuhiro Yoshida 2007年4月15日 (日) 11:37 (CDT)
Some advice copied from a posting by Kunal Kapoor:
I'm on a shared hosted server, and they told me that I was pushing the limits of their servers and must cease immediately. It was through a lot of searching did I find that using dbsessions was the way forward. It took me a while to understand the expiry timestamp in the MySQL database table, but then I found (after a lot of searching) that it counts in seconds from 1st Jan 1970 @ 12:00am.
It was only by doing this was I able to calculate the exact number of seconds that my dbsessions were lasting. This value was nowhere near the value chosen in the Admin >> Variables. [Quick Note: this is due to a bug in Moodle's code (#5912), which doesn't use this value when using dbsessions. It may have been fixed by the time you read this or not. Check the bug status: http://moodle.org/bugs/bug.php?op=show&bugid=5912].
So I did more searching. I found that I needed to adjust session.gc_maxlifetime in php.ini. Because I'm on a shared server, I had to make this change via the .htaccess file. So I changed this number from 1440 seconds (25 minutes) to 14400 (4 hours) by adding this line:
php_value session.gc_maxlifetime "14400"
This then gave me my 4 hour sessions (after checking against the MySQL table using a nifty Excel spreadsheet I quickly made).