diff --git a/src/Core/Config/IConfigAdapter.php b/src/Core/Config/IConfigAdapter.php
index 5bbb61ae80..139483de26 100644
--- a/src/Core/Config/IConfigAdapter.php
+++ b/src/Core/Config/IConfigAdapter.php
@@ -9,10 +9,7 @@ namespace Friendica\Core\Config;
 interface IConfigAdapter
 {
 	/**
-	 * @brief Loads all configuration values into a cached storage.
-	 *
-	 * All configuration values of the system are stored in global cache
-	 * which is available under the global variable Config::$config
+	 * Loads all configuration values into a cached storage.
 	 *
 	 * @param string  $cat The category of the configuration values to load
 	 *
@@ -21,17 +18,9 @@ interface IConfigAdapter
 	public function load($cat = "config");
 
 	/**
-	 * @brief Get a particular user's config variable given the category name
+	 * Get a particular user's config variable given the category name
 	 * ($family) and a key.
 	 *
-	 * Get a particular config value from the given category ($family)
-	 * and the $key from a cached storage in static::$config[$uid].
-	 * $instore is only used by the set_config function
-	 * to determine if the key already exists in the DB
-	 * If a key is found in the DB but doesn't exist in
-	 * local config cache, pull it into the cache so we don't have
-	 * to hit the DB again for this item.
-	 *
 	 * @param string  $cat           The category of the configuration value
 	 * @param string  $k             The configuration key to query
 	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
@@ -42,8 +31,6 @@ interface IConfigAdapter
 	public function get($cat, $k, $default_value = null, $refresh = false);
 
 	/**
-	 * @brief Sets a configuration value for system config
-	 *
 	 * Stores a config value ($value) in the category ($family) under the key ($key)
 	 * for the user_id $uid.
 	 *
@@ -58,9 +45,7 @@ interface IConfigAdapter
 	public function set($cat, $k, $value);
 
 	/**
-	 * @brief Deletes the given key from the system configuration.
-	 *
-	 * Removes the configured value from the stored cache in Config::$config
+	 * Removes the configured value from the stored cache
 	 * and removes it from the database.
 	 *
 	 * @param string $cat The category of the configuration value
diff --git a/src/Core/Config/IPConfigAdapter.php b/src/Core/Config/IPConfigAdapter.php
index f4ad392d7f..e62fc9c93f 100644
--- a/src/Core/Config/IPConfigAdapter.php
+++ b/src/Core/Config/IPConfigAdapter.php
@@ -15,10 +15,7 @@ namespace Friendica\Core\Config;
 interface IPConfigAdapter
 {
 	/**
-	 * @brief Loads all configuration values of a user's config family into a cached storage.
-	 *
-	 * All configuration values of the given user are stored in global cache
-	 * which is available under the global variable self::$config[$uid].
+	 * Loads all configuration values of a user's config family into a cached storage.
 	 *
 	 * @param string $uid The user_id
 	 * @param string $cat The category of the configuration value
@@ -28,12 +25,9 @@ interface IPConfigAdapter
 	public function load($uid, $cat);
 
 	/**
-	 * @brief Get a particular user's config variable given the category name
+	 * Get a particular user's config variable given the category name
 	 * ($family) and a key.
 	 *
-	 * Get a particular user's config value from the given category ($family)
-	 * and the $key from a cached storage in self::$config[$uid].
-	 *
 	 * @param string  $uid           The user_id
 	 * @param string  $cat           The category of the configuration value
 	 * @param string  $k             The configuration key to query
@@ -45,8 +39,6 @@ interface IPConfigAdapter
 	public function get($uid, $cat, $k, $default_value = null, $refresh = false);
 
 	/**
-	 * @brief Sets a configuration value for a user
-	 *
 	 * Stores a config value ($value) in the category ($family) under the key ($key)
 	 * for the user_id $uid.
 	 *
@@ -62,9 +54,7 @@ interface IPConfigAdapter
 	public function set($uid, $cat, $k, $value);
 
 	/**
-	 * @brief Deletes the given key from the users's configuration.
-	 *
-	 * Removes the configured value from the stored cache in self::$config[$uid]
+	 * Removes the configured value from the stored cache
 	 * and removes it from the database.
 	 *
 	 * @param string $uid The user_id
diff --git a/src/Core/Config/JITConfigAdapter.php b/src/Core/Config/JITConfigAdapter.php
index 5e7e786f07..e7aecb933b 100644
--- a/src/Core/Config/JITConfigAdapter.php
+++ b/src/Core/Config/JITConfigAdapter.php
@@ -28,6 +28,9 @@ class JITConfigAdapter implements IConfigAdapter
 		$this->configCache = $configCache;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function load($cat = "config")
 	{
 		// We don't preload "system" anymore.
@@ -50,6 +53,9 @@ class JITConfigAdapter implements IConfigAdapter
 		DBA::close($configs);
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function get($cat, $k, $default_value = null, $refresh = false)
 	{
 		if (!$refresh) {
@@ -92,6 +98,9 @@ class JITConfigAdapter implements IConfigAdapter
 		return $default_value;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function set($cat, $k, $value)
 	{
 		// We store our setting values in a string variable.
@@ -129,6 +138,9 @@ class JITConfigAdapter implements IConfigAdapter
 		return $result;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function delete($cat, $k)
 	{
 		if (isset($this->cache[$cat][$k])) {
diff --git a/src/Core/Config/JITPConfigAdapter.php b/src/Core/Config/JITPConfigAdapter.php
index 2fd7705928..b1a15601cc 100644
--- a/src/Core/Config/JITPConfigAdapter.php
+++ b/src/Core/Config/JITPConfigAdapter.php
@@ -28,6 +28,9 @@ class JITPConfigAdapter implements IPConfigAdapter
 		$this->configCache = $configCache;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function load($uid, $cat)
 	{
 		$pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
@@ -46,6 +49,9 @@ class JITPConfigAdapter implements IPConfigAdapter
 		DBA::close($pconfigs);
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function get($uid, $cat, $k, $default_value = null, $refresh = false)
 	{
 		if (!$refresh) {
@@ -82,6 +88,9 @@ class JITPConfigAdapter implements IPConfigAdapter
 		}
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function set($uid, $cat, $k, $value)
 	{
 		// We store our setting values in a string variable.
@@ -109,6 +118,9 @@ class JITPConfigAdapter implements IPConfigAdapter
 		return $result;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function delete($uid, $cat, $k)
 	{
 		$this->configCache->deleteP($uid, $cat, $k);
diff --git a/src/Core/Config/PreloadConfigAdapter.php b/src/Core/Config/PreloadConfigAdapter.php
index bda9b28aae..d5fbd982bf 100644
--- a/src/Core/Config/PreloadConfigAdapter.php
+++ b/src/Core/Config/PreloadConfigAdapter.php
@@ -30,6 +30,9 @@ class PreloadConfigAdapter implements IConfigAdapter
 		$this->load();
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function load($family = 'config')
 	{
 		if ($this->config_loaded) {
@@ -45,6 +48,9 @@ class PreloadConfigAdapter implements IConfigAdapter
 		$this->config_loaded = true;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function get($cat, $k, $default_value = null, $refresh = false)
 	{
 		if ($refresh) {
@@ -59,6 +65,9 @@ class PreloadConfigAdapter implements IConfigAdapter
 		return $return;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function set($cat, $k, $value)
 	{
 		// We store our setting values as strings.
@@ -83,6 +92,9 @@ class PreloadConfigAdapter implements IConfigAdapter
 		return true;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function delete($cat, $k)
 	{
 		$this->configCache->delete($cat, $k);
diff --git a/src/Core/Config/PreloadPConfigAdapter.php b/src/Core/Config/PreloadPConfigAdapter.php
index b49f39382f..af97815ade 100644
--- a/src/Core/Config/PreloadPConfigAdapter.php
+++ b/src/Core/Config/PreloadPConfigAdapter.php
@@ -34,6 +34,9 @@ class PreloadPConfigAdapter implements IPConfigAdapter
 		}
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function load($uid, $family)
 	{
 		if ($this->config_loaded) {
@@ -53,6 +56,9 @@ class PreloadPConfigAdapter implements IPConfigAdapter
 		$this->config_loaded = true;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function get($uid, $cat, $k, $default_value = null, $refresh = false)
 	{
 		if (!$this->config_loaded) {
@@ -71,6 +77,9 @@ class PreloadPConfigAdapter implements IPConfigAdapter
 		return $this->configCache->getP($uid, $cat, $k, $default_value);;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function set($uid, $cat, $k, $value)
 	{
 		if (!$this->config_loaded) {
@@ -98,6 +107,9 @@ class PreloadPConfigAdapter implements IPConfigAdapter
 		return true;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
 	public function delete($uid, $cat, $k)
 	{
 		if (!$this->config_loaded) {