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Redis Page Cache
Commit e6faa20f authored by Erick Hitter's avatar Erick Hitter
2 Browse files
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Rename plugin to Redis Page Cache

parent 3e4939c0
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Showing with 93 additions and 93 deletions
index-wp-redis.php → index-redis-page-cache.php
View file @ e6faa20f
<?php
/**
* WP REDIS CACHE
* Redis Page Cache
*/
/**
* GLOBAL CONFIGURATION
*/
global $wp_redis_cache_config;
global $redis_page_cache_config;
$wp_redis_cache_config = array(
$redis_page_cache_config = array(
'debug' => false,
'debug_messages' => '',
'stats' => false,
......@@ -21,11 +21,11 @@ $wp_redis_cache_config = array(
);
// Uncomment either option below to fix the values here and disable the admin UI
// $wp_redis_cache_config['cache_duration'] = 43200;
// $wp_redis_cache_config['unlimited'] = false;
// $redis_page_cache_config['cache_duration'] = 43200;
// $redis_page_cache_config['unlimited'] = false;
// Modify this function to introduce custom handling when exceptions occur
function wp_redis_cache_exception_handler( $exception ) {
function redis_page_cache_exception_handler( $exception ) {
return;
}
......@@ -34,18 +34,18 @@ function wp_redis_cache_exception_handler( $exception ) {
*
* DO NOT EDIT BELOW THIS LINE!
*/
$wp_redis_cache_config['current_url'] = wp_redis_cache_get_clean_url();
$wp_redis_cache_config['redis_key'] = md5( $wp_redis_cache_config['current_url'] );
$redis_page_cache_config['current_url'] = redis_page_cache_get_clean_url();
$redis_page_cache_config['redis_key'] = md5( $redis_page_cache_config['current_url'] );
// Start the timer so we can track the page load time
if ( $wp_redis_cache_config['debug'] || $wp_redis_cache_config['stats'] ) {
if ( $redis_page_cache_config['debug'] || $redis_page_cache_config['stats'] ) {
$start = microtime();
}
/**
* SET SEPARATE CACHES FOR BROAD DEVICE TYPES
*/
$wp_redis_cache_config['redis_key'] = wp_redis_cache_set_device_key( $wp_redis_cache_config['redis_key'] );
$redis_page_cache_config['redis_key'] = redis_page_cache_set_device_key( $redis_page_cache_config['redis_key'] );
/**
* UTILITY FUNCTIONS
......@@ -56,7 +56,7 @@ $wp_redis_cache_config['redis_key'] = wp_redis_cache_set_device_key( $wp_redis_c
*
* @return float
*/
function wp_redis_cache_get_micro_time( $time ) {
function redis_page_cache_get_micro_time( $time ) {
list( $usec, $sec ) = explode( " ", $time );
return ( (float) $usec + (float) $sec );
}
......@@ -69,8 +69,8 @@ function wp_redis_cache_get_micro_time( $time ) {
* @param int $precision
* @return float
*/
function wp_redis_cache_time_elapsed( $start, $end ) {
return round( @wp_redis_cache_get_micro_time( $end ) - @wp_redis_cache_get_micro_time( $start ), 5 );
function redis_page_cache_time_elapsed( $start, $end ) {
return round( @redis_page_cache_get_micro_time( $end ) - @redis_page_cache_get_micro_time( $start ), 5 );
}
/**
......@@ -78,7 +78,7 @@ function wp_redis_cache_time_elapsed( $start, $end ) {
*
* @return bool
*/
function wp_redis_cache_refresh_has_secret( $secret ) {
function redis_page_cache_refresh_has_secret( $secret ) {
return isset( $_GET['refresh'] ) && $secret == $_GET['refresh'];
}
......@@ -87,7 +87,7 @@ function wp_redis_cache_refresh_has_secret( $secret ) {
*
* @return bool
*/
function wp_redis_cache_request_has_secret( $secret ) {
function redis_page_cache_request_has_secret( $secret ) {
return false !== strpos( $_SERVER['REQUEST_URI'], "refresh=${secret}" );
}
......@@ -96,7 +96,7 @@ function wp_redis_cache_request_has_secret( $secret ) {
*
* @return null
*/
function wp_redis_cache_handle_cdn_remote_addressing() {
function redis_page_cache_handle_cdn_remote_addressing() {
// so we don't confuse the cloudflare server
if ( isset( $_SERVER['HTTP_CF_CONNECTING_IP'] ) ) {
$_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];
......@@ -110,7 +110,7 @@ function wp_redis_cache_handle_cdn_remote_addressing() {
*
* @return string
*/
function wp_redis_cache_get_clean_url() {
function redis_page_cache_get_clean_url() {
$proto = 'http';
if ( isset( $_SERVER['HTTPS'] ) && ( 'on' === strtolower( $_SERVER['HTTPS'] ) || '1' === $_SERVER['HTTPS'] ) ) {
$proto .= 's';
......@@ -134,8 +134,8 @@ function wp_redis_cache_get_clean_url() {
* @param string $key
* @return $string
*/
function wp_redis_cache_set_device_key( $key ) {
switch ( wp_redis_cache_get_device_type() ) {
function redis_page_cache_set_device_key( $key ) {
switch ( redis_page_cache_get_device_type() ) {
case 'tablet' :
$prefix = 'T-';
break;
......@@ -157,7 +157,7 @@ function wp_redis_cache_set_device_key( $key ) {
*
* @return string
*/
function wp_redis_cache_get_device_type() {
function redis_page_cache_get_device_type() {
$ua = isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : '';
if ( empty( $ua ) ) {
......@@ -198,37 +198,37 @@ function wp_redis_cache_get_device_type() {
*
* @return object
*/
function wp_redis_cache_connect_redis() {
global $wp_redis_cache_config;
function redis_page_cache_connect_redis() {
global $redis_page_cache_config;
// check if PECL Extension is available
if ( class_exists( 'Redis' ) ) {
if ( $wp_redis_cache_config['debug'] ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- Redis PECL module found -->\n";
if ( $redis_page_cache_config['debug'] ) {
$redis_page_cache_config['debug_messages'] .= "<!-- Redis PECL module found -->\n";
}
$redis = new Redis();
$redis->connect( $wp_redis_cache_config['redis_server'], $wp_redis_cache_config['redis_port'] );
$redis->connect( $redis_page_cache_config['redis_server'], $redis_page_cache_config['redis_port'] );
// Default DB is 0, so only need to SELECT if other
if ( $wp_redis_cache_config['redis_db'] ) {
$redis->select( $wp_redis_cache_config['redis_db'] );
if ( $redis_page_cache_config['redis_db'] ) {
$redis->select( $redis_page_cache_config['redis_db'] );
}
// Fallback to predis5.2.php
} else {
if ( $wp_redis_cache_config['debug'] ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- using predis as a backup -->\n";
if ( $redis_page_cache_config['debug'] ) {
$redis_page_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
$redis = array(
'host' => $wp_redis_cache_config['redis_server'],
'port' => $wp_redis_cache_config['redis_port'],
'host' => $redis_page_cache_config['redis_server'],
'port' => $redis_page_cache_config['redis_port'],
);
// Default DB is 0, so only need to SELECT if other
if ( $wp_redis_cache_config['redis_db'] ) {
$redis['database'] = $wp_redis_cache_config['redis_db'];
if ( $redis_page_cache_config['redis_db'] ) {
$redis['database'] = $redis_page_cache_config['redis_db'];
}
$redis = new Predis_Client( $redis );
......@@ -242,7 +242,7 @@ function wp_redis_cache_connect_redis() {
*/
// Set proper IP for proxied requests
wp_redis_cache_handle_cdn_remote_addressing();
redis_page_cache_handle_cdn_remote_addressing();
// Ensure WP uses a theme (this is normally set in index.php)
if ( ! defined( 'WP_USE_THEMES' ) ) {
......@@ -251,7 +251,7 @@ if ( ! defined( 'WP_USE_THEMES' ) ) {
try {
// Establish connection with Redis server
$redis = wp_redis_cache_connect_redis();
$redis = redis_page_cache_connect_redis();
// Whether we need to load WP
$load_wp = true;
......@@ -260,40 +260,40 @@ try {
$is_post = (bool) 'POST' === $_SERVER['REQUEST_METHOD'];
$logged_in = (bool) preg_match( "#(wordpress_(logged|sec)|comment_author)#", var_export( $_COOKIE, true ) );
if ( $wp_redis_cache_config['debug'] ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- POST request: " . ( $is_post ? 'yes' : 'no' ) . "-->\n";
$wp_redis_cache_config['debug_messages'] .= "<!-- Logged in: " . ( $logged_in ? 'yes' : 'no' ) . "-->\n";
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";
}
// 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( $wp_redis_cache_config['secret_string'] ) || wp_redis_cache_request_has_secret( $wp_redis_cache_config['secret_string'] ) ) {
if ( $wp_redis_cache_config['debug'] ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- manual refresh was required -->\n";
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->del( $wp_redis_cache_config['redis_key'] );
$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( $wp_redis_cache_config['redis_key'] ) ) {
if ( $wp_redis_cache_config['debug'] ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- serving page from cache: key: " . $wp_redis_cache_config['redis_key'] . " -->\n";
} 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";
}
// Page is served from cache, so we don't need WP
$load_wp = false;
$wp_redis_cache_config['cached'] = true;
$redis_page_cache_config['cached'] = true;
echo trim( $redis->get( $wp_redis_cache_config['redis_key'] ) );
echo trim( $redis->get( $redis_page_cache_config['redis_key'] ) );
// Display generation stats if requested
if ( $wp_redis_cache_config['stats'] ) {
echo "\n<!-- Page cached via Redis using the WP Redis Cache plugin. -->";
echo "\n<!-- Retrieved from cache in " . wp_redis_cache_time_elapsed( $start, microtime() ) . " seconds. -->";
if ( $redis_page_cache_config['stats'] ) {
echo "\n<!-- Page cached via Redis using the Redis Page Cache plugin. -->";
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'] != $wp_redis_cache_config['server_ip'] ) {
if ( false === strstr( $wp_redis_cache_config['current_url'], 'preview=true' ) ) {
if ( $wp_redis_cache_config['debug'] ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- displaying page without cache -->\n";
} 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";
}
// If user isn't logged in and this isn't a post request, render the requested page and cache if appropriate.
......@@ -303,42 +303,42 @@ try {
// Render page into an output buffer and display
ob_start();
require_once dirname( __FILE__ ) . '/wp-blog-header.php';
require_once dirname( __FILE__ ) . '/wp`-blog-header.php';
$markup_to_cache = trim( ob_get_clean() );
echo $markup_to_cache;
// Display generation stats if requested
if ( $wp_redis_cache_config['stats'] ) {
echo "\n<!-- Page NOT cached via Redis using the WP Redis Cache plugin. -->";
echo "\n<!-- Generated and cached in " . wp_redis_cache_time_elapsed( $start, microtime() ) . " seconds. -->";
if ( $redis_page_cache_config['stats'] ) {
echo "\n<!-- Page NOT cached via Redis using the Redis Page Cache plugin. -->";
echo "\n<!-- Generated and cached in " . redis_page_cache_time_elapsed( $start, microtime() ) . " seconds. -->";
}
// Cache rendered page if appropriate
if ( ! is_404() && ! is_search() ) {
// Is unlimited cache life requested?
if ( isset( $wp_redis_cache_config['unlimited'] ) ) {
$unlimited = $wp_redis_cache_config['unlimited'];
if ( isset( $redis_page_cache_config['unlimited'] ) ) {
$unlimited = $redis_page_cache_config['unlimited'];
} else {
$unlimited = (bool) get_option( 'wp-redis-cache-debug', false );
$wp_redis_cache_config['unlimited'] = $unlimited;
$redis_page_cache_config['unlimited'] = $unlimited;
}
// Cache the page for the chosen duration
if ( $unlimited ) {
$redis->set( $wp_redis_cache_config['redis_key'], $markup_to_cache );
$redis->set( $redis_page_cache_config['redis_key'], $markup_to_cache );
} else {
if ( isset( $wp_redis_cache_config['cache_duration'] ) ) {
$cache_duration = $wp_redis_cache_config['cache_duration'];
if ( isset( $redis_page_cache_config['cache_duration'] ) ) {
$cache_duration = $redis_page_cache_config['cache_duration'];
} else {
$cache_duration = (int) get_option( 'wp-redis-cache-seconds', 43200 );
$wp_redis_cache_config['cache_duration'] = $cache_duration;
$redis_page_cache_config['cache_duration'] = $cache_duration;
}
if ( ! is_numeric( $cache_duration ) ) {
$cache_duration = $wp_redis_cache_config['cache_duration'] = 43200;
$cache_duration = $redis_page_cache_config['cache_duration'] = 43200;
}
$redis->setex( $wp_redis_cache_config['redis_key'], $cache_duration, $markup_to_cache );
$redis->setex( $redis_page_cache_config['redis_key'], $cache_duration, $markup_to_cache );
}
}
}
......@@ -351,26 +351,26 @@ try {
}
} catch ( Exception $e ) {
require_once dirname( __FILE__ ) . '/wp-blog-header.php';
wp_redis_cache_exception_handler( $e );
redis_page_cache_exception_handler( $e );
}
/**
* DEBUGGING OUTPUT
*/
if ( $wp_redis_cache_config['debug'] ) {
if ( $redis_page_cache_config['debug'] ) {
$end = microtime();
$time = wp_redis_cache_time_elapsed( $start, $end );
$wp_redis_cache_config['debug_messages'] .= "<!-- WP Redis Cache by Erick Hitter. Page generated in " . $time . " seconds. -->\n";
$wp_redis_cache_config['debug_messages'] .= "<!-- Site was cached = " . $wp_redis_cache_config['cached'] . " -->\n";
$wp_redis_cache_config['debug_messages'] .= "<!-- wp-redis-cache-key = " . $wp_redis_cache_config['redis_key'] . "-->\n";
if ( isset( $wp_redis_cache_config['cache_duration'] ) ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- wp-redis-cache-seconds = " . $wp_redis_cache_config['cache_duration'] . " -->\n";
$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'] .= "<!-- wp-redis-cache-key = " . $redis_page_cache_config['redis_key'] . "-->\n";
if ( isset( $redis_page_cache_config['cache_duration'] ) ) {
$redis_page_cache_config['debug_messages'] .= "<!-- wp-redis-cache-seconds = " . $redis_page_cache_config['cache_duration'] . " -->\n";
}
$wp_redis_cache_config['debug_messages'] .= "<!-- wp-redis-cache-ip = " . $wp_redis_cache_config['server_ip'] . "-->\n";
if ( isset( $wp_redis_cache_config['unlimited'] ) ) {
$wp_redis_cache_config['debug_messages'] .= "<!-- wp-redis-cache-unlimited = " . $wp_redis_cache_config['unlimited'] . "-->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- wp-redis-cache-ip = " . $redis_page_cache_config['server_ip'] . "-->\n";
if ( isset( $redis_page_cache_config['unlimited'] ) ) {
$redis_page_cache_config['debug_messages'] .= "<!-- wp-redis-cache-unlimited = " . $redis_page_cache_config['unlimited'] . "-->\n";
}
$wp_redis_cache_config['debug_messages'] .= "<!-- wp-redis-cache-debug = " . $wp_redis_cache_config['debug'] . "-->\n";
$redis_page_cache_config['debug_messages'] .= "<!-- wp-redis-cache-debug = " . $redis_page_cache_config['debug'] . "-->\n";
echo $wp_redis_cache_config['debug_messages'];
echo $redis_page_cache_config['debug_messages'];
}
wp-redis-cache/wp-redis-cache.php → redis-page-cache/redis-page-cache.php
View file @ e6faa20f
<?php
/*
Plugin Name: WP Redis Cache
Plugin Name: Redis Page Cache
Plugin URI: https://github.com/ethitter/wp-redis-cache
Version: 1.0
Description: Manage settings for full-page caching powered by Redis.
Author: Erick Hitter
Author URI: https://ethitter.com/
This software is based heavily on work of the same name by Benjamin Adams, copyright 2013.
This software is based on WP Redis Cache by Benjamin Adams, copyright 2013.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
......@@ -24,7 +24,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
class WP_Redis_Cache {
class Redis_Page_Cache {
// Hold singleton instance
private static $__instance = null;
......@@ -71,11 +71,11 @@ class WP_Redis_Cache {
*/
public function register_ui() {
// Don't show UI
if ( defined( 'WP_REDIS_CACHE_HIDE_UI' ) && WP_REDIS_CACHE_HIDE_UI ) {
if ( defined( 'REDIS_PAGE_CACHE_HIDE_UI' ) && REDIS_PAGE_CACHE_HIDE_UI ) {
return;
}
add_options_page( 'WP Redis Cache', 'WP Redis Cache', 'manage_options', $this->ns, array( $this, 'render_ui' ) );
add_options_page( 'Redis Page Cache', 'Redis Page Cache', 'manage_options', $this->ns, array( $this, 'render_ui' ) );
}
/**
......@@ -86,7 +86,7 @@ class WP_Redis_Cache {
public function render_ui() {
?>
<div class="wrap">
<h2>WP Redis Cache Options</h2>
<h2>Redis Page Cache Options</h2>
<form method="post" action="options.php">
<?php settings_fields( $this->ns ); ?>
......@@ -137,14 +137,14 @@ class WP_Redis_Cache {
);
// Override default connection settings with global values, when present
if ( defined( 'WP_REDIS_CACHE_REDIS_HOST' ) && WP_REDIS_CACHE_REDIS_HOST ) {
$redis_settings['host'] = WP_REDIS_CACHE_REDIS_HOST;
if ( defined( 'REDIS_PAGE_CACHE_REDIS_HOST' ) && REDIS_PAGE_CACHE_REDIS_HOST ) {
$redis_settings['host'] = REDIS_PAGE_CACHE_REDIS_HOST;
}
if ( defined( 'WP_REDIS_CACHE_REDIS_PORT' ) && WP_REDIS_CACHE_REDIS_PORT ) {
$redis_settings['port'] = WP_REDIS_CACHE_REDIS_PORT;
if ( defined( 'REDIS_PAGE_CACHE_REDIS_PORT' ) && REDIS_PAGE_CACHE_REDIS_PORT ) {
$redis_settings['port'] = REDIS_PAGE_CACHE_REDIS_PORT;
}
if ( defined( 'WP_REDIS_CACHE_REDIS_DB' ) && WP_REDIS_CACHE_REDIS_DB ) {
$redis_settings['database'] = WP_REDIS_CACHE_REDIS_DB;
if ( defined( 'REDIS_PAGE_CACHE_REDIS_DB' ) && REDIS_PAGE_CACHE_REDIS_DB ) {
$redis_settings['database'] = REDIS_PAGE_CACHE_REDIS_DB;
}
$permalink = get_permalink( $post->ID );
......@@ -167,4 +167,4 @@ class WP_Redis_Cache {
}
}
WP_Redis_Cache::get_instance();
Redis_Page_Cache::get_instance();
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