diff --git a/admin/tool/log/classes/helper/buffered_writer.php b/admin/tool/log/classes/helper/buffered_writer.php
index d341452bbb4..9ffac2b9b33 100644
--- a/admin/tool/log/classes/helper/buffered_writer.php
+++ b/admin/tool/log/classes/helper/buffered_writer.php
@@ -44,6 +44,13 @@ trait buffered_writer {
     /** @var int $count Counter. */
     protected $count = 0;
 
+    /**
+     * Should the event be ignored (== not logged)?
+     * @param \core\event\base $event
+     * @return bool
+     */
+    abstract protected function is_event_ignored(\core\event\base $event);
+
     /**
      * Write event in the store with buffering. Method insert_events() must be
      * defined.
@@ -53,7 +60,26 @@ trait buffered_writer {
      * @return void
      */
     public function write(\core\event\base $event) {
-        $this->buffer[] = $event;
+        if ($this->is_event_ignored($event)) {
+            return;
+        }
+
+        // We need to capture current info at this moment,
+        // at the same time this lowers memory use because
+        // snapshots and custom objects may be garbage collected.
+        $entry = $event->get_data();
+        $entry['other'] = serialize($entry['other']);
+        if (CLI_SCRIPT) {
+            $entry['origin'] = 'cli';
+            $entry['ip'] = null;
+        } else {
+            $entry['origin'] = 'web';
+            $entry['ip'] = getremoteaddr();
+        }
+        $entry['realuserid'] = \core\session\manager::is_loggedinas() ? $_SESSION['USER']->realuser : null;
+
+
+        $this->buffer[] = $entry;
         $this->count++;
 
         if (!isset($this->buffersize)) {
@@ -75,15 +101,15 @@ trait buffered_writer {
         $events = $this->buffer;
         $this->count = 0;
         $this->buffer = array();
-        $this->insert_events($events);
+        $this->insert_event_entries($events);
     }
 
     /**
      * Bulk write a given array of events to the backend. Stores must implement this.
      *
-     * @param array $events An array of events to write.
+     * @param array $evententries raw event data
      */
-    abstract protected function insert_events($events);
+    abstract protected function insert_event_entries($evententries);
 
     /**
      * Get a config value for the store.
diff --git a/admin/tool/log/store/database/classes/log/store.php b/admin/tool/log/store/database/classes/log/store.php
index aad8c9295e7..9ab22f7b831 100644
--- a/admin/tool/log/store/database/classes/log/store.php
+++ b/admin/tool/log/store/database/classes/log/store.php
@@ -107,49 +107,41 @@ class store implements \tool_log\log\writer, \core\log\sql_select_reader {
         return true;
     }
 
+    /**
+     * Should the event be ignored (== not logged)?
+     * @param \core\event\base $event
+     * @return bool
+     */
+    protected function is_event_ignored(\core\event\base $event) {
+        if (in_array($event->crud, $this->excludeactions) ||
+            in_array($event->edulevel, $this->excludelevels)
+        ) {
+            // Ignore event if the store settings do not want to store it.
+            return true;
+        }
+        if ((!CLI_SCRIPT or PHPUNIT_TEST) and !$this->logguests) {
+            // Always log inside CLI scripts because we do not login there.
+            if (!isloggedin() or isguestuser()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * Insert events in bulk to the database.
      *
-     * @param \core\event\base[] $events
+     * @param array $evententries raw event data
      */
-    protected function insert_events($events) {
+    protected function insert_event_entries($evententries) {
         if (!$this->init()) {
             return;
         }
         if (!$dbtable = $this->get_config('dbtable')) {
             return;
         }
-        $dataobj = array();
-
-        // Filter events.
-        foreach ($events as $event) {
-            if (in_array($event->crud, $this->excludeactions) ||
-                in_array($event->edulevel, $this->excludelevels)
-            ) {
-                // Ignore event if the store settings do not want to store it.
-                continue;
-            }
-            if ((!CLI_SCRIPT or PHPUNIT_TEST) and !$this->logguests) {
-                // Always log inside CLI scripts because we do not login there.
-                if (!isloggedin() or isguestuser()) {
-                    continue;
-                }
-            }
-
-            $data = $event->get_data();
-            $data['other'] = serialize($data['other']);
-            if (CLI_SCRIPT) {
-                $data['origin'] = 'cli';
-                $data['ip'] = null;
-            } else {
-                $data['origin'] = 'web';
-                $data['ip'] = getremoteaddr();
-            }
-            $data['realuserid'] = \core\session\manager::is_loggedinas() ? $_SESSION['USER']->realuser : null;
-            $dataobj[] = $data;
-        }
         try {
-            $this->extdb->insert_records($dbtable, $dataobj);
+            $this->extdb->insert_records($dbtable, $evententries);
         } catch (\moodle_exception $e) {
             debugging('Cannot write to external database: ' . $e->getMessage(), DEBUG_DEVELOPER);
         }
diff --git a/admin/tool/log/store/standard/classes/log/store.php b/admin/tool/log/store/standard/classes/log/store.php
index c2dd866b2aa..5f8e433b4ef 100644
--- a/admin/tool/log/store/standard/classes/log/store.php
+++ b/admin/tool/log/store/standard/classes/log/store.php
@@ -40,39 +40,30 @@ class store implements \tool_log\log\writer, \core\log\sql_internal_reader {
         $this->logguests = $this->get_config('logguests', 1);
     }
 
+    /**
+     * Should the event be ignored (== not logged)?
+     * @param \core\event\base $event
+     * @return bool
+     */
+    protected function is_event_ignored(\core\event\base $event) {
+        if ((!CLI_SCRIPT or PHPUNIT_TEST) and !$this->logguests) {
+            // Always log inside CLI scripts because we do not login there.
+            if (!isloggedin() or isguestuser()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * Finally store the events into the database.
      *
-     * @param \core\event\base[] $events
+     * @param array $evententries raw event data
      */
-    protected function insert_events($events) {
+    protected function insert_event_entries($evententries) {
         global $DB;
 
-        $dataobj = array();
-
-        // Filter events.
-        foreach ($events as $event) {
-            if ((!CLI_SCRIPT or PHPUNIT_TEST) and !$this->logguests) {
-                // Always log inside CLI scripts because we do not login there.
-                if (!isloggedin() or isguestuser()) {
-                    continue;
-                }
-            }
-
-            $data = $event->get_data();
-            $data['other'] = serialize($data['other']);
-            if (CLI_SCRIPT) {
-                $data['origin'] = 'cli';
-                $data['ip'] = null;
-            } else {
-                $data['origin'] = 'web';
-                $data['ip'] = getremoteaddr();
-            }
-            $data['realuserid'] = \core\session\manager::is_loggedinas() ? $_SESSION['USER']->realuser : null;
-            $dataobj[] = $data;
-        }
-
-        $DB->insert_records('logstore_standard_log', $dataobj);
+        $DB->insert_records('logstore_standard_log', $evententries);
     }
 
     public function get_events_select($selectwhere, array $params, $sort, $limitfrom, $limitnum) {