PHP uses file storage to implement caching

PHP uses file storage to implement caching

In some database data record large, but the server is limited, maybe a MySQL query will be good hundreds of milliseconds, a simple page generally also has more than 10 queries, this time also a page load down basically several seconds, if the concurrency is high, the server basically paralyzed, Cause a page for a long time also load not down, this time we can use the file cache to alleviate the pressure under MySQL, the following is a use example.

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3. Page business logic processing, getting results
4. $objPage = new Page_indexmodel ($arrParams);
6. A series of business logic is placed in the objpage, calling the process method to get the result set
7. $arrResult = $objPage->process ();
9. Smarty assignment after getting results
10. $smarty->assign ($arrResult);
12. Output template
13. $smarty->display ();
15. ?>

Now we use the file cache to skip page business processing this step

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3. $cachFile = './index.php ';
4. The cache file exists for less than an hour, and the cached result set is used directly, and no MySQL queries are made
5. if (file_exists ($cacheFile) && time ()-filemtime ($cachFile) < 3600) {
6. Using the results in the cache
7. $arrResult = include ($cachFile);
8. } else {
9. $objPage = new Page_indexmodel ($arrParams);
10. $arrResult = $objPage->process ();
11. $strContent = "
13. Cache the result set
14. File_put_contents ($cachFile, $strContent);
15. }
17. Smarty assignment after getting results
18. $smarty->assign ($arrResult);
20. Output template
21. $smarty->display ();

Reference Source:
PHP uses file storage to implement caching
Http://www.lai18.com/content/407149.html

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