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query optimizations; split big feed update transaction

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This commit is contained in:
Andrew Dolgov
2006-03-21 05:52:56 +01:00
parent 03f321db57
commit 44e241cb44
3 changed files with 43 additions and 9 deletions
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38
functions.php
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@@ -19,10 +19,16 @@
$rows = -1;
if (DB_TYPE == "pgsql") {
$result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
/* $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
marked = false AND feed_id = '$feed_id' AND
(SELECT date_entered FROM ttrss_entries WHERE
id = ref_id) < NOW() - INTERVAL '$purge_interval days'");
id = ref_id) < NOW() - INTERVAL '$purge_interval days'"); */
$result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
ttrss_entries.id = ref_id AND
marked = false AND
feed_id = '$feed_id' AND
ttrss_entries.date_entered < NOW() - INTERVAL '$purge_interval days'");
$rows = pg_affected_rows($result);
@@ -40,10 +46,23 @@
}
}
function global_purge_old_posts($link, $do_output = false) {
function global_purge_old_posts($link, $do_output = false, $limit = false) {
if (DB_TYPE == "mysql") {
$random_qpart = "RAND()";
} else {
$random_qpart = "RANDOM()";
}
if ($limit) {
$limit_qpart = "LIMIT $limit";
} else {
$limit_qpart = "";
}
$result = db_query($link,
"SELECT id,purge_interval,owner_uid FROM ttrss_feeds ORDER BY id");
"SELECT id,purge_interval,owner_uid FROM ttrss_feeds
ORDER BY $random_qpart $limit_qpart");
while ($line = db_fetch_assoc($result)) {
@@ -239,7 +258,7 @@
if ($rss) {
db_query($link, "BEGIN");
// db_query($link, "BEGIN");
$result = db_query($link, "SELECT title,icon_url,site_url,owner_uid
FROM ttrss_feeds WHERE id = '$feed'");
@@ -389,6 +408,8 @@
if (!$num_comments) $num_comments = 0;
db_query($link, "BEGIN");
if (db_num_rows($result) == 0) {
// base post entry does not exist, create it
@@ -533,6 +554,8 @@
}
}
db_query($link, "COMMIT");
/* taaaags */
// <a href="http://technorati.com/tag/Xorg" rel="tag">Xorg</a>, //
@@ -549,6 +572,8 @@
if (count($entry_tags) > 0) {
db_query($link, "BEGIN");
$result = db_query($link, "SELECT id,int_id
FROM ttrss_entries,ttrss_user_entries
WHERE guid = '$entry_guid'
@@ -582,13 +607,14 @@
}
}
}
db_query($link, "COMMIT");
}
}
db_query($link, "UPDATE ttrss_feeds
SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
db_query($link, "COMMIT");
// db_query($link, "COMMIT");
} else {
$error_msg = db_escape_string(magpie_error());