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Cache Debugging

Query Monitor panel to highlight Altis cache stats.

by K. Adam White · github.com/kadamwhite/altis-cache-debugging-qm-panel

★ 0stars

Install

Download source zip No release zip yet

This is the repository archive. It installs, but the folder name will carry the branch suffix and updates will not flow.

Install straight from GitHub with WP-CLI:

wp plugin install https://github.com/kadamwhite/altis-cache-debugging-qm-panel/archive/refs/heads/main.zip
No built-in updater. New versions won't appear under Dashboard → Updates. Install new releases yourself, or let Git Updater track the repository.
Readme github.com/kadamwhite/altis-cache-debugging-qm-panel ↗

Altis cache stats panel for query monitor

This plugin adds a "Cache" panel within the "AWS X-Ray" query monitor panel, and outputs within that panel a quick summary of the cache data for the current page.

To get detailed Redis call reporting, you need to make this change to the vendor/humanmade/wp-redis plugin:

diff --git a/object-cache.php b/object-cache.php
index 537a516..f259412 100644
--- a/object-cache.php
+++ b/object-cache.php
@@ -1249,6 +1249,8 @@ class WP_Object_Cache {
    protected function _call_redis( $method ) {
        global $wpdb;

+       global $redis_timing;
+
        $arguments = func_get_args();
        array_shift( $arguments ); // ignore $method

@@ -1263,7 +1265,13 @@ class WP_Object_Cache {
                    $this->redis_calls[ $method ] = 0;
                }
                $this->redis_calls[ $method ]++;
+               $start_time = microtime( true );
                $retval = call_user_func_array( array( $this->redis, $method ), $arguments );
+               $redis_timing[] = [
+                   microtime( true ) - $start_time,
+                   $arguments[0] ?? '',
+                   $method
+               ];
                return $retval;
            } catch ( Exception $e ) {
                $retry_exception_messages = $this->retry_exception_messages();