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Redis Page Cache
Commit 147b2c9f authored by Erick Hitter's avatar Erick Hitter
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Improve debugging messages and reduce duplication. Many of these came from the... 

Improve debugging messages and reduce duplication. Many of these came from the original plugin this is forked from.

See #1.
parent 00c73fdb
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Showing with 26 additions and 22 deletions
index-redis-page-cache.php
View file @ 147b2c9f
......@@ -225,7 +225,7 @@ function redis_page_cache_connect_redis() {
// check if PECL Extension is available
if ( class_exists( 'Redis' ) ) {
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- Redis PECL module found -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Redis: PECL -->\n";
}
$redis = new Redis();
......@@ -238,7 +238,7 @@ function redis_page_cache_connect_redis() {
// Fallback to predis5.2.php
} else {
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- using predis as a backup -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Redis: Predis -->\n";
}
include_once dirname( __FILE__ ) . '/wp-content/plugins/redis-page-cache/predis5.2.php'; //we need this to use Redis inside of PHP
......@@ -282,21 +282,21 @@ try {
$logged_in = (bool) preg_match( "#(wordpress_(logged|sec)|comment_author)#", var_export( $_COOKIE, true ) );
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- POST request: " . ( $is_post ? 'yes' : 'no' ) . "-->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Logged in: " . ( $logged_in ? 'yes' : 'no' ) . "-->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- POST request: " . ( $is_post ? 'yes' : 'no' ) . " -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Logged in: " . ( $logged_in ? 'yes' : 'no' ) . " -->\n";
}
// Refresh request, deletes cache: either manual refresh cache by adding ?refresh=secret_string after the URL or somebody posting a comment
if ( redis_page_cache_refresh_has_secret( $redis_page_cache_config['secret_string'] ) || redis_page_cache_request_has_secret( $redis_page_cache_config['secret_string'] ) ) {
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- manual refresh was required -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Manual refresh requested -->\n";
}
$redis->del( $redis_page_cache_config['redis_key'] );
// This page is cached, the user isn't logged in, and it isn't a POST request, so let's use the cache
} elseif ( ! $is_post && ! $logged_in && $redis->exists( $redis_page_cache_config['redis_key'] ) ) {
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- serving page from cache: key: " . $redis_page_cache_config['redis_key'] . " -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Serving page from cache -->\n";
}
// Page is served from cache, so we don't need WP
......@@ -307,18 +307,22 @@ try {
// Display generation stats if requested
if ( $redis_page_cache_config['stats'] ) {
echo "\n<!-- Page cached via Redis using the Redis Page Cache plugin. -->";
echo "\n<!-- Page cached via Redis using the Redis Page Cache plugin (http://eth.pw/rpc). -->";
echo "\n<!-- Retrieved from cache in " . redis_page_cache_time_elapsed( $start, microtime() ) . " seconds. -->";
}
// If the cache does not exist lets display the user the normal page without cache, and then fetch a new cache page
} elseif ( $_SERVER['REMOTE_ADDR'] != $redis_page_cache_config['server_ip'] ) {
if ( false === strstr( $redis_page_cache_config['current_url'], 'preview=true' ) ) {
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- displaying page without cache -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Displaying page without cache -->\n";
}
// If user isn't logged in and this isn't a post request, render the requested page and cache if appropriate.
if ( ! $is_post && ! $logged_in ) {
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- Adding page to cache -->\n";
}
// We load WP to generate the cached output, so no need to load again
$load_wp = false;
......@@ -330,7 +334,7 @@ try {
// Display generation stats if requested
if ( $redis_page_cache_config['stats'] ) {
echo "\n<!-- Page NOT cached via Redis using the Redis Page Cache plugin. -->";
echo "\n<!-- Page NOT cached via Redis using the Redis Page Cache plugin (http://eth.pw/rpc). -->";
echo "\n<!-- Generated and cached in " . redis_page_cache_time_elapsed( $start, microtime() ) . " seconds. -->";
}
......@@ -373,19 +377,19 @@ try {
* DEBUGGING OUTPUT
*/
if ( $redis_page_cache_config['debug'] ) {
$end = microtime();
$time = redis_page_cache_time_elapsed( $start, $end );
$redis_page_cache_config['debug_messages'] .= "<!-- Redis Page Cache by Erick Hitter. Page generated in " . $time . " seconds. -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Site was cached = " . $redis_page_cache_config['cached'] . " -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- redis-page-cache-key = " . $redis_page_cache_config['redis_key'] . "-->\n";
if ( isset( $redis_page_cache_config['cache_duration'] ) ) {
$redis_page_cache_config['debug_messages'] .= "<!-- redis-page-cache-seconds = " . $redis_page_cache_config['cache_duration'] . " -->\n";
}
$redis_page_cache_config['debug_messages'] .= "<!-- redis-page-cache-ip = " . $redis_page_cache_config['server_ip'] . "-->\n";
if ( isset( $redis_page_cache_config['unlimited'] ) ) {
$redis_page_cache_config['debug_messages'] .= "<!-- redis-page-cache-unlimited = " . $redis_page_cache_config['unlimited'] . "-->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Redis Page Cache by Erick Hitter (http://eth.pw/rpc). Page generated in " . redis_page_cache_time_elapsed( $start, microtime() ) . " seconds. -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Cache key: " . $redis_page_cache_config['redis_key'] . "-->\n";
if ( isset( $redis_page_cache_config['unlimited'] ) && $redis_page_cache_config['unlimited'] ) {
$cache_duration = 'infinite';
} elseif ( isset( $redis_page_cache_config['cache_duration'] ) ) {
$cache_duration = $redis_page_cache_config['cache_duration'];
} else {
$cache_duration = 'unknown';
}
$redis_page_cache_config['debug_messages'] .= "<!-- redis-page-cache-debug = " . $redis_page_cache_config['debug'] . "-->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Cache duration in seconds: " . $cache_duration . " -->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- Server IP: " . $redis_page_cache_config['server_ip'] . " -->\n";
echo $redis_page_cache_config['debug_messages'];
echo "\n" . $redis_page_cache_config['debug_messages'];
}
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