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Redis Page Cache
Commit a9ab06c7 authored by Erick Hitter's avatar Erick Hitter
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Don't automatically output debugging messages, rather storing for output at the end of the page. 

Conslidates debug messages and prevents them from corrupting XML layouts.
parent a003b8af
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Showing with 31 additions and 23 deletions
index-wp-redis.php
View file @ a9ab06c7
......@@ -7,13 +7,14 @@
* GLOBAL CONFIGURATION
*/
$GLOBALS['wp_redis_cache_config'] = array(
'debug' => false,
'cache' => false,
'server_ip' => '127.0.0.1',
'redis_server' => '127.0.0.1',
'redis_port' => 6379,
'redis_db' => 0,
'secret_string' => 'changeme',
'debug' => false,
'debug_messages' => '',
'cache' => false,
'server_ip' => '127.0.0.1',
'redis_server' => '127.0.0.1',
'redis_port' => 6379,
'redis_db' => 0,
'secret_string' => 'changeme',
);
// Uncomment either option below to fix the values here and disable the admin UI
......@@ -34,7 +35,9 @@ $GLOBALS['wp_redis_cache_config']['current_url'] = wp_redis_cache_get_clean_url(
$GLOBALS['wp_redis_cache_config']['redis_key'] = md5( $GLOBALS['wp_redis_cache_config']['current_url'] );
// Start the timer so we can track the page load time
$start = microtime();
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
$start = microtime();
}
/**
* MOBILE HANDLING
......@@ -131,7 +134,7 @@ function wp_redis_cache_connect_redis() {
// check if PECL Extension is available
if ( class_exists( 'Redis' ) ) {
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- Redis PECL module found -->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- Redis PECL module found -->\n";
}
$redis = new Redis();
......@@ -141,7 +144,7 @@ function wp_redis_cache_connect_redis() {
$redis->select( $GLOBALS['wp_redis_cache_config']['redis_db'] );
} else { // Fallback to predis5.2.php
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- using predis as a backup -->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- using predis as a backup -->\n";
}
include_once dirname( __FILE__ ) . '/wp-content/plugins/wp-redis-cache/predis5.2.php'; //we need this to use Redis inside of PHP
......@@ -179,21 +182,21 @@ try {
$logged_in = (bool) preg_match( "#(wordpress_(logged|sec)|comment_author)#", var_export( $_COOKIE, true ) );
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- POST request: . " . ( $is_post ? 'yes' : 'no' ) . "-->\n";
echo "<!-- Logged in: . " . ( $logged_in ? 'yes' : 'no' ) . "-->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- POST request: . " . ( $is_post ? 'yes' : 'no' ) . "-->\n";
$GLOBALS['wp_redis_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 ( wp_redis_cache_refresh_has_secret( $GLOBALS['wp_redis_cache_config']['secret_string'] ) || wp_redis_cache_request_has_secret( $GLOBALS['wp_redis_cache_config']['secret_string'] ) || wp_redis_cache_is_remote_page_load( $GLOBALS['wp_redis_cache_config']['current_url'], $GLOBALS['wp_redis_cache_config']['server_ip'] ) ) {
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- manual refresh was required -->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- manual refresh was required -->\n";
}
$redis->del( $GLOBALS['wp_redis_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( $GLOBALS['wp_redis_cache_config']['redis_key'] ) ) {
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- serving page from cache: key: " . $GLOBALS['wp_redis_cache_config']['redis_key'] . " -->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- serving page from cache: key: " . $GLOBALS['wp_redis_cache_config']['redis_key'] . " -->\n";
}
// Page is served from cache, so we don't need WP
......@@ -205,7 +208,7 @@ try {
} elseif ( $_SERVER['REMOTE_ADDR'] != $GLOBALS['wp_redis_cache_config']['server_ip'] ) {
if ( false === strstr( $GLOBALS['wp_redis_cache_config']['current_url'], 'preview=true' ) ) {
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- displaying page without cache -->\n";
$GLOBALS['wp_redis_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.
......@@ -260,17 +263,22 @@ try {
wp_redis_cache_exception_handler( $e );
}
$end = microtime();
$time = @wp_redis_cache_get_micro_time( $end ) - @wp_redis_cache_get_micro_time( $start );
/**
* DEBUGGING OUTPUT
*/
if ( $GLOBALS['wp_redis_cache_config']['debug'] ) {
echo "<!-- Cache system by Benjamin Adams. Page generated in " . round($time, 5) . " seconds. -->\n";
echo "<!-- Site was cached = " . $GLOBALS['wp_redis_cache_config']['cached'] . " -->\n";
$end = microtime();
$time = @wp_redis_cache_get_micro_time( $end ) - @wp_redis_cache_get_micro_time( $start );
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- Cache system by Benjamin Adams. Page generated in " . round($time, 5) . " seconds. -->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- Site was cached = " . $GLOBALS['wp_redis_cache_config']['cached'] . " -->\n";
if ( isset( $GLOBALS['wp_redis_cache_config']['cache_duration'] ) ) {
echo "<!-- wp-redis-cache-seconds = " . $GLOBALS['wp_redis_cache_config']['cache_duration'] . " -->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- wp-redis-cache-seconds = " . $GLOBALS['wp_redis_cache_config']['cache_duration'] . " -->\n";
}
echo "<!-- wp-redis-cache-ip = " . $GLOBALS['wp_redis_cache_config']['server_ip'] . "-->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- wp-redis-cache-ip = " . $GLOBALS['wp_redis_cache_config']['server_ip'] . "-->\n";
if ( isset( $GLOBALS['wp_redis_cache_config']['unlimited'] ) ) {
echo "<!-- wp-redis-cache-unlimited = " . $GLOBALS['wp_redis_cache_config']['unlimited'] . "-->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- wp-redis-cache-unlimited = " . $GLOBALS['wp_redis_cache_config']['unlimited'] . "-->\n";
}
echo "<!-- wp-redis-cache-debug = " . $GLOBALS['wp_redis_cache_config']['debug'] . "-->\n";
$GLOBALS['wp_redis_cache_config']['debug_messages'] .= "<!-- wp-redis-cache-debug = " . $GLOBALS['wp_redis_cache_config']['debug'] . "-->\n";
echo $GLOBALS['wp_redis_cache_config']['debug_messages'];
}
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