{"id":236,"date":"2011-07-05T07:29:58","date_gmt":"2011-07-04T23:29:58","guid":{"rendered":"http:\/\/www.cnmiss.cn\/?p=236"},"modified":"2011-07-05T07:37:38","modified_gmt":"2011-07-04T23:37:38","slug":"discuz%e7%9a%84memcache%e7%bc%93%e5%ad%98%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.cnmiss.cn\/?p=236","title":{"rendered":"Discuz!\u7684Memcache\u7f13\u5b58\u5b9e\u73b0(\u8f6c)"},"content":{"rendered":"

\u524d\u8a00<\/strong>\uff1a
\n\u5728PHP+MySQL\u67b6\u6784\u7684\u7ad9\u70b9\u4e2d\uff0c\u672c\u6587\u91cd\u70b9\u4eceMySQL\u7684\u89d2\u5ea6\u53bb\u5206\u6790\u5982\u4f55\u4f7fDiscuz!\u8bba\u575b\uff08\u6216\u8005\u7c7b\u4f3c\u7684PHP+MySQL\u67b6\u6784\u7684\u7a0b\u5e8f\uff09\u5e94\u5bf9\u5927\u8bbf\u95ee\u91cf\u3002\u540c\u65f6\u7ed9\u51fa\u4e00\u4e9b\u4f7f\u7528Memcache\u53bb\u51cf\u8f7bMySQL\u538b\u529b\u7684\u5efa\u8bae\u3002\u5176\u4e2d\u5f88\u591a\u6570\u636e\u662f\u4e2a\u4eba\u6d4b\u8bd5\u7684\u7ed3\u679c\uff0c\u5982\u6709\u4e0d\u540c\u610f\u89c1\uff0c\u656c\u8bf7\u7559\u8a00\u544a\u4e4b\u3002\u53e6\u5916\u7531\u4e8e\u4e2a\u4eba\u601d\u7ef4\u7684\u95ee\u9898\uff0c\u884c\u6587\u6bd4\u8f83\u8df3\u8dc3\uff0c\u7279\u6b64\u58f0\u660e\uff01<\/p>\n

\u7cfb\u7edf\u5206\u6790<\/strong>\uff1a
\n\u5355\u7eaf\u7684\u4eceMySQL\u7684\u89d2\u5ea6\u51fa\u53d1\uff0c\u5355\u53f0MySQL\u7684\u6570\u636e\u5e93\u8d1f\u8f7d\u5230\u6bcf\u5929\u4e0a\u4ebf\u6b21\u7684\u64cd\u4f5c\uff08\u6bcf\u79d2\u5927\u69821100\u6b21MySQL\u64cd\u4f5c\uff0c\u7136\u540e\u4e58\u4ee586400\uff09\u5e94\u8be5\u4e0d\u662f\u975e\u5e38\u56f0\u96be\u7684\u4e8b\u60c5\u3002\u6309\u7167\u8fd9\u4e2a\u6570\u636e\u4e5f\u5c31\u662f\u8bf4\u4e00\u4e2a\u5355MySQL\u670d\u52a1\u5668\u7684\u8bba\u575b\u6765\u8bf4\u53ef\u4ee5\u8dd1\u52302\u5343\u4e07PV\u662f\u4e0d\u6210\u95ee\u9898\u7684\uff0c\u6211\u76f8\u4fe1\u56fd\u5185\u7edd\u5927\u90e8\u5206\u7684\u8bba\u575b\u90fd\u4e0d\u53ef\u80fd\u505a\u5230\u6bcf\u59292\u5343\u4e07\u7684PV\uff0c\u4f46\u5b9e\u9645\u60c5\u51b5\u5e76\u4e0d\u662f\u5982\u6b64\u3002\u5f53\u8bba\u575bPV\u8d85\u8fc7\u767e\u4e07\u7684\u65f6\u5019\u4e00\u53f0WEB\u65e9\u5df2\u7ecf\u4e0d\u582a\u91cd\u8d1f\u4e86\u3002<\/p>\n

\u5c31\u6211\u624b\u5934\u7684\u4e00\u4e9b\u6570\u636e\u663e\u793a\uff0c\u76ee\u524d\u7684Discuz!\u8bba\u575b\u7684\u57fa\u672c\u670d\u52a1\u5668\u67b6\u6784\u662f\u524d\u9762Squid\u9876\u7740\uff0c\u540e\u9762\u624d\u662f\u4e00\u53f0DB\u5728\u6491\u7740\u3002\u8fd9\u79cd\u67b6\u6784\u4e2d\uff0cweb\u670d\u52a1\u5668\u538b\u529b\u589e\u5927\u53ef\u4ee5\u901a\u8fc7\u5e76\u884c\u589e\u52a0\u670d\u52a1\u5668\u89e3\u51b3\uff0c\u800cMySQL\u538b\u529b\u5374\u65e0\u5904\u91ca\u653e\uff0c\u5728\u4e0d\u8003\u8651MySQL\u5b98\u65b9\u670d\u52a1\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u8fc7\u5408\u7406\u7684\u5229\u7528Memcache\u662f\u53ef\u4ee5\u8fbe\u5230\u51cf\u8f7bMySQL\u670d\u52a1\u5668\u8d1f\u8f7d\u7684\u3002<\/p>\n

\u53ef\u80fd\u4f1a\u6709\u670b\u53cb\u8bf4\u6211\u4eec\u53ef\u4ee5\u5bf9\u6570\u636e\u8868\u8fdb\u884c\u5206\u8868\uff08\u6ce8\uff1a\u6b64\u5904\u5206\u8868\u662f\u6307\u901a\u8fc7PHP\u7a0b\u5e8f\u53bb\u5206\u8868\uff0c\u6bd4\u5982pw\uff0cdv\u7684\u5206\u8868<\/em>\uff09\u5904\u7406\uff0c\u4f46\u662f\u5f53\u524d\u7684\u60c5\u51b5\u662f\u4e00\u53f0DB\u670d\u52a1\u5668\u5df2\u7ecf\u4e0d\u80fd\u652f\u6491\u5f53\u524d\u7684\u6570\u636e\u5904\u7406\u4e86\uff0c\u901a\u8fc7PHP\u5bf9MySQL\u8fdb\u884c\u7684\u5206\u8868\u4f9d\u7136\u4e0d\u80fd\u51cf\u8f7bMySQL\u7684\u8d1f\u8f7d\u3002\uff08\u6ce8\uff1a\u672c\u6bb5\u6587\u5b57\u9488\u5bf9\u5df2\u7ecf\u6210\u578b\u7684\u7cfb\u7edf\uff0c\u5982\u679c\u662f\u72ec\u7acb\u5f00\u53d1\u7684\u7cfb\u7edf\u5728\u67b6\u6784\u524d\u671f\u5c31\u8fdb\u884c\u6570\u636e\u7684\u540c\u6b65\u5206\u533a\u8fd8\u662f\u4e0d\u9519\u7684\u3002<\/em>\uff09<\/p>\n

\u8fd8\u53ef\u80fd\u6709\u670b\u53cb\u4f1a\u8bf4\u5229\u7528MySQL\u7684\u4e3b\u4ece\u6784\u67b6\uff0c\u5982\u679c\u4f60\u63d0\u51fa\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u5c31\u5f88\u660e\u786e\u7684\u544a\u8bc9\u4f60\uff0c\u56de\u53bb\u770b\u770b\u624b\u518c\u5427\u3002\u5728Mysql Master\/Slave \u6a21\u5f0f\u4e2d\uff0cSlave\u4e3b\u8981\u662f\u6765\u5907\u4efd\u6570\u636e\u7684\uff0c\u53ea\u6709\u5f53Master\u51fa\u73b0\u6545\u969c\u65f6\uff0cSlave\u624d\u4f1a\u63a5\u8fc7Master\u7684\u670d\u52a1\uff0c\u5bf9\u5916\u90e8\u8bf7\u6c42\u8fdb\u884c\u5904\u7406\uff0c\u76f4\u5230Master\u6062\u590d\u6b63\u5e38\u3002\u5c31\u662f\u8bf4\uff1a\u5728Master\/Slave\u4e2d\uff0c\u8981\u4e48\u662fMaster\u5728\u670d\u52a1\uff0c\u8981\u4e48\u662fSlave\u5728\u670d\u52a1\uff0c\u4e0d\u4f1aMaster\/Slave\u540c\u65f6\u63d0\u4f9b\u670d\u52a1\u3002<\/strong><\/em>\u4f7f\u7528MySQL\u4e3b\u4ece\u4f9d\u7136\u4e0d\u80fd\u6709\u6548\u7684\u964d\u4f4eMySQL\u7684\u8d1f\u8f7d\u3002<\/p>\n

\u6216\u8bb8\u4f60\u53c8\u4f1a\u95ee\u6211\u4e3a\u4ec0\u4e48\u4e0d\u4f7f\u7528MySQL\u96c6\u7fa4\uff08MySQL Cluster\uff09\uff0c\u90a3\u53ef\u662f\u767d\u82b1\u82b1\u7684\u94f6\u5b50\u554a\uff0c\u540c\u7b49\u91d1\u94b1\u7684\u4ed8\u51fa\u4e0b\uff0c\u83b7\u5f97\u6700\u5927\u7684\u6536\u76ca\u624d\u662f\u738b\u9053\u3002PS:\u8bf4\u53e5\u9898\u5916\u8bdd\uff0cMySQL\u624b\u518c\u4e2d\u5c06MySQL\u96c6\u7fa4\u89e3\u91ca\u4e3aMySQL\u7c07\uff0c\u4e0d\u4e60\u60ef\u3002<\/p>\n

\u5176\u5b9e\u5728MySQL5.1\u4e2d\u7684MySQL\u5206\u533a\uff08MySQL Partition\uff09\u662f\u4e2a\u5f88\u597d\u7684\u4e1c\u897f\uff0c\u5b83\u5141\u8bb8\u6839\u636e\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u4efb\u610f\u5927\u5c0f\u7684\u89c4\u5219\uff0c\u8de8\u6587\u4ef6\u7cfb\u7edf\u5206\u914d\u5355\u4e2a\u8868\u7684\u591a\u4e2a\u90e8\u5206\u3002\u5b9e\u9645\u4e0a\uff0c\u8868\u7684\u4e0d\u540c\u90e8\u5206\u5728\u4e0d\u540c\u7684\u4f4d\u7f6e\u88ab\u5b58\u50a8\u4e3a\u5355\u72ec\u7684\u8868\u3002\u6211\u8ba4\u4e3a\u8fd9\u4e2a\u624d\u662f\u5f53\u524d\u60c5\u51b5\u4e0b\uff0c\u6700\u79ef\u6781\u6709\u6548\u7684\u964d\u4f4eMySQL\u8d1f\u8f7d\u7684\u89e3\u51b3\u65b9\u6cd5\u4e4b\u4e00<\/strong>\u3002\u4f46\u662f\u9057\u61be\u7684\u662f\uff0c\u8fd9\u79cdMySQL\u5206\u533a\u7684\u65b9\u5f0f\u6211\u4e2a\u4eba\u6ca1\u6709\u4f7f\u7528\u8fc7\u7684\u7ecf\u5386\uff0c\u4e5f\u4e0d\u89c1\u6709\u76f8\u5f53\u5145\u5206\u7684\u6848\u4f8b\u8868\u660e\u5b83\u662f\u7a33\u5b9a\u7684\u6216\u8005\u4e0d\u7a33\u5b9a\u7684\u3002\u6240\u4ee5\u6211\u8fd8\u5728\u5f98\u5f8a\u4e2d\u3002\u5982\u679c\u4f60\u77e5\u9053\uff0c\u8bf7\u9ebb\u70e6\u544a\u4e4b\uff01\u6709\u670b\u53cb\u8bf4\u817e\u8baf\u662f\u5728\u7528MySQL\u5206\u533a\uff0c\u4f46\u662f\u9057\u61be\u7684\u662f\u6211\u6ca1\u6709\u5f97\u5230\u786e\u5207\u7684\u6570\u636e\u3002<\/p>\n

\u597d\u4e86\u5206\u6790\u603b\u7ed3\u4e86\u8fd9\u4e48\u591a\u79cd\u964d\u4f4eMySQL\u8d1f\u8f7d\u7684\u65b9\u5f0f\u4e4b\u540e\uff0c\u5728\u7528\u6237\u73af\u5883\u9700\u6c42\u7b49\u7279\u5b9a\u6761\u4ef6\u4e0b\uff0c\u6211\u5f97\u51fa\u7ed3\u8bba\u5728\u5f53\u524d\u60c5\u51b5\u4e0b\uff0c\u7f13\u89e3Discuz!\u8bba\u575b\u7684MySQL\u8d1f\u8f7d\u6bd4\u8f83\u6709\u6548\u7684\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528Memcache\uff01<\/p>\n

\u4f7f\u7528Memcache\u7684\u7406\u7531<\/strong>\uff1a
\n1.Web Server\uff08Lighttpd\u3001Nginx\u636e\u8bf4\u90fd\u6bd4Apache\u6548\u7387\u9ad8\u597d\u591a\uff0c\u5927\u5bb6\u53ef\u4ee5\u8bd5\u7528\u4e0b\uff09\u5bf9CPU\u8981\u6c42\u9ad8\uff0c\u5bf9\u5185\u5b58\u8981\u6c42\u4f4e\uff1b\u800cMemcached Server\u662f\u5bf9CPU\u8981\u6c42\u4f4e\uff0c\u5bf9\u5185\u5b58\u8981\u6c42\u9ad8\uff0c\u6240\u4ee5\u53ef\u4ee5\u642d\u914d\u4f7f\u7528\u3002\u5728\u5bf9\u524d\u7aef\u7684Web Server\u4e0a\u5b89\u88c5Memcached Server\u662f\u53ef\u884c\u7684\u3002
\n2.\u91d1\u94b1\u91d1\u94b1\u91d1\u94b1\uff0c\u6700\u5c11\u7684\u4ed8\u51fa\uff0c\u83b7\u5f97\u6700\u5927\u7684\u6536\u76ca\u3002
\n3.\u7b80\u5355\u7b80\u5355\u7b80\u5355\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u67b6\u6784\u5408\u7406\u7684\u7cfb\u7edf\u6765\u8bf4\uff0c\u6dfb\u52a0Memcache\u7684\u652f\u6301\u53ef\u80fd\u53ea\u662f\u4e00\u4e2a\u6279\u91cf\u5904\u7406\u6587\u4ef6\u7684\u8fc7\u7a0b<\/p>\n

Discuz!\u4f7f\u7528Memcache<\/strong>
\n1.\u5728config.inc.php\u4e2d\u589e\u52a0<\/p>\n

$memcachehost = ‘127.0.0.1’;
\n$memcacheport = 11211;
\n$memcachelife = 60;<\/p>\n

2.\u5728include\/common.inc.php\u4e2d<\/p>\n

$mem = new Memcache;
\n$mem->connect($memcachehost, $memcacheport);<\/p>\n

3.\u4fee\u6539include\/db_mysql.class.php\u4e2d\u7684fetch_array\u3001query\u8fd9\u4e24\u4e2a\u65b9\u6cd5\uff0c\u5e76\u6dfb\u52a0query_mysql\u65b9\u6cd5\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

function fetch_array($query, $result_type = MYSQL_ASSOC) {
\nreturn is_resource($query) ? mysql_fetch_array($query, $result_type) : $query[0];
\n}<\/p>\n

function query_memcache($sql, $type = ”) {
\nglobal $mem,$memcachelife;<\/p>\n

$key = md5($sql);
\nif(!($query = $mem->get($key))) {
\n$query = $this->query($sql, $type);
\nwhile($item\u00a0 = $this->fetch_array($query)) {
\n$res[] = $item;
\n}
\n$query = $res;
\n$mem->set($key, $query , 0, $memcachelife);
\n}
\nreturn $query;
\n}<\/p>\n

function query($sql, $type = ”) {
\nglobal $debug, $discuz_starttime, $sqldebug, $sqlspenttimes;<\/p>\n

$func = $type == ‘UNBUFFERED’ && @function_exists(‘mysql_unbuffered_query’) ?
\n‘mysql_unbuffered_query’ : ‘mysql_query’;
\nif(!($query = $func($sql, $this->link)) && $type != ‘SILENT’) {
\n$this->halt(‘MySQL Query Error’, $sql);
\n}<\/p>\n

if(substr($sql, 0, 6) == ‘SELECT’) {
\necho ‘<font color=”red”>Cache SQL<\/font>:<font color=”green”>’.$sql.'<\/font><br \/><br \/>’;
\n} else {
\necho ‘<font color=”red”>Flash SQL<\/font>:<font color=”green”>’.$sql.'<\/font><br \/><br \/>’;
\n}<\/p>\n

$this->querynum++;
\nreturn $query;
\n}<\/p>\n

4.\u5c06\u9700\u8981\u4f7f\u7528Memcache\u7f13\u5b58\u7684SQL\u67e5\u8be2\u7684\u4ee3\u7801\u7531<\/p>\n

$db->query(<\/p>\n

\u4fee\u6539\u4e3a<\/p>\n

$db->query_memcache(<\/p>\n

\u6ce8\u610f\u5e76\u5c06<\/p>\n

while($post = $db->fetch_array($query)) {<\/p>\n

\u4fee\u6539\u4e3a<\/p>\n

foreach($query as $post) {<\/p>\n

\u6ca1\u6709while\u7684$db->fetch_array\u53ef\u4ee5\u4e0d\u7528\u4fee\u6539\u3002<\/p>\n

\u4e0b\u9762\u4ee3\u7801\u6709\u7528\u5f97\u7740\u7684\u5c31\u62ff\u53bb\uff1a<\/p>\n

preg_replace(“\/while\\([$](\\w+)\\s*\\=\\s*[$]db->fetch_array\\([$]query\\)\\)\/is”, “foreach(\\$query as \\$\\\\1)”, $file);<\/p>\n

\u56de\u5934\u653e\u51fa\u4e2a\u5c0f\u5de5\u5177\u6279\u91cf\u66ff\u6362\u4e0b\u5c31\u53ef\u4ee5\u4e86\u3002
\n\u5728EditPlus\u4e2d\u53ef\u4ee5\u8fd9\u6837\u66ff\u6362\uff1awhile\\([$](.*) = [$]db->fetch_array\\([$]query\\)\\)\u66ff\u6362\u4e3aforeach($query as $\\1)
\n5.\u5b8c\u6210\u4e86\uff0c\u6d4b\u8bd5\u5427\uff01~<\/p>\n","protected":false},"excerpt":{"rendered":"

\u524d\u8a00\uff1a \u5728PHP+MySQL\u67b6\u6784\u7684\u7ad9\u70b9\u4e2d\uff0c\u672c\u6587\u91cd\u70b9\u4eceMySQL\u7684\u89d2\u5ea6\u53bb\u5206\u6790\u5982\u4f55\u4f7f … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[41],"class_list":["post-236","post","type-post","status-publish","format-standard","hentry","category-xxbj","tag-memcache"],"_links":{"self":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/posts\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=236"}],"version-history":[{"count":0,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/posts\/236\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}