PHP缓存集成库phpFastCache学习教程

PHP缓存的方法有很多种,常用的有memcache, memcached。现在我们来学习一个php缓存集成库phpFastCache,就是开源的,只有一个简单的php文件,就可以支持包括apc,memcache,memcached,wincache,files,pdo and mpdo等缓存方法.

phpFastCache是一个开源的PHP缓存库,只提供一个简单的PHP文件,可方便集成到已有项目,支持多种缓存方法,包括:apc,memcache,memcached,wincache,files,pdo and mpdo,可通过简单的API来定义缓存的有效时间,代码如下:

<?php
    // In your config file
    include("phpfastcache/phpfastcache.php");
    phpFastCache::setup("storage","auto");

    // phpFastCache support "apc", "memcache", "memcached", "wincache" ,"files", "sqlite" and "xcache"
    // You don&#39;t need to change your code when you change your caching system. Or simple keep it auto
    $cache = phpFastCache();

    // In your Class, Functions, PHP Pages
    // try to get from Cache first. product_page = YOUR Identity Keyword
    $products = $cache->get("product_page");

    if($products == null) {
        $products = YOUR DB QUERIES || GET_PRODUCTS_FUNCTION;
        // set products in to cache in 600 seconds = 10 minutes
        $cache->set("product_page", $products,600);
    }

    // Output Your Contents $products HERE

提高cURL和API调用性能,代码如下:

<?php
    include("phpfastcache/phpfastcache.php");

    $cache = phpFastCache("memcached");

    // try to get from Cache first.
    $results = $cache->get("identity_keyword")

    if($results == null) {
        $results = cURL->get("http://www.youtube.com/api/json/url/keyword/page");
        // Write to Cache Save API Calls next time
        $cache->set("identity_keyword", $results, 3600*24);
    }

    foreach($results as $video) {
        // Output Your Contents HERE
    }

全页缓存,代码如下:

<?php
    // use Files Cache for Whole Page / Widget

    // keyword = Webpage_URL
    $keyword_webpage = md5($_SERVER[&#39;HTTP_HOST&#39;].$_SERVER[&#39;REQUEST_URI&#39;].$_SERVER[&#39;QUERY_STRING&#39;]);
    $html = __c("files")->get($keyword_webpage);

    if($html == null) {
        ob_start();
        /*
            ALL OF YOUR CODE GO HERE
            RENDER YOUR PAGE, DB QUERY, WHATEVER
        */

        // GET HTML WEBPAGE
        $html = ob_get_contents();
        // Save to Cache 30 minutes
        __c("files")->set($keyword_webpage,$html, 1800);
    }

    echo $html;

挂件缓存,代码如下:

<?php
    // use Files Cache for Whole Page / Widget
    $cache = phpFastCache("files");

    $html = $cache->widget_1;

    if($html == null) {
        $html = Render Your Page || Widget || "Hello World";
        // Save to Cache 30 minutes
        $cache->widget_1 = array($html, 1800);
    }

    echo or return your $html;

同时使用多种缓存,代码如下:

<?php
    // in your config files
    include("phpfastcache/phpfastcache.php");
    // auto | memcache | files ...etc. Will be default for $cache = __c();
    phpFastCache::$storage = "auto";

    $cache1 = phpFastCache();

    $cache2 = __c("memcache");
    $server = array(array("127.0.0.1",11211,100), array("128.5.1.3",11215,80));
    $cache2->option("server", $server);

    $cache3 = new phpFastCache("apc");

    // How to Write?
    $cache1->set("keyword1", "string|number|array|object", 300);
    $cache2->keyword2 = array("something here", 600);
    __c()->keyword3 = array("array|object", 3600*24);

    // How to Read?
    $data = $cache1->get("keyword1");
    $data = $cache2->keyword2;
    $data = __c()->keyword3;
    $data = __c()->get("keyword4");

    // Free to Travel between any caching methods

    $cache1 = phpFastCache("files");
    $cache1->set("keyword1", $value, $time);
    $cache1->memcache->set("keyword1", $value, $time);
    $cache1->apc->set("whatever", $value, 300);

    $cache2 = __c("apc");
    $cache2->keyword1 = array("so cool", 300);
    $cache2->files->keyword1 = array("Oh yeah!", 600);

    $data = __c("memcache")->get("keyword1");
    $data = __c("files")->get("keyword2");
    $data = __c()->keyword3;

    // Multiple ? No Problem

    $list = $cache1->getMulti(array("key1","key2","key3"));
    $cache2->setMulti(array("key1","value1", 300),
                      array("key2","value2", 600),
                      array("key3","value3", 1800),
                      );

    $list = $cache1->apc->getMulti(array("key1","key2","key3"));
    __c()->memcache->getMulti(array("a","b","c"));

    // want more? Check out document in source code

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