diff --git a/boards/settings.py b/boards/settings.py
--- a/boards/settings.py
+++ b/boards/settings.py
@@ -5,6 +5,14 @@ CONFIG_DEFAULT_SETTINGS = 'boards/config
 CONFIG_SETTINGS = 'boards/config/settings.ini'
 
 
+SECTION_FORMS = 'Forms'
+
+VALUE_TRUE = 'true'
+
+LIST_DELIMITER = ','
+DICT_DELIMITER = ':'
+
+
 config = configparser.ConfigParser()
 config.read(CONFIG_DEFAULT_SETTINGS)
 config.read(CONFIG_SETTINGS)
@@ -19,15 +27,15 @@ def get_int(section, name):
 
 
 def get_bool(section, name):
-    return get(section, name) == 'true'
+    return get(section, name) == VALUE_TRUE
 
 
 def get_list_dict(section, name):
     str_dict = get(section, name)
-    return [item.split(':') for item in str_dict.split(',')]
+    return [item.split(DICT_DELIMITER) for item in str_dict.split(LIST_DELIMITER)]
 
 
 def get_list(section, name):
     str_list = get(section, name)
-    return str_list.split(',')
+    return str_list.split(LIST_DELIMITER)
 
diff --git a/boards/utils.py b/boards/utils.py
--- a/boards/utils.py
+++ b/boards/utils.py
@@ -30,6 +30,10 @@ SETTING_ANON_MODE = 'AnonymousMode'
 ANON_IP = '127.0.0.1'
 
 FILE_EXTENSION_DELIMITER = '.'
+URL_DELIMITER = '/'
+CACHE_KEY_DELIMITER = ':'
+
+DEFAULT_MIMETYPE = 'application/octet-stream'
 
 
 def is_anonymous_mode():
@@ -67,7 +71,7 @@ def cached_result(key_method=None):
 
             cache_key_params += args
             for key, value in kwargs:
-                cache_key_params.append(key + ':' + value)
+                cache_key_params.append(key + CACHE_KEY_DELIMITER + value)
 
             if isinstance(obj, Model):
                 cache_key_params.append(str(obj.id))
@@ -129,7 +133,7 @@ def get_file_mimetype(file) -> str:
 
     file_type = magic.from_buffer(buf, mime=True)
     if file_type is None:
-        file_type = 'application/octet-stream'
+        file_type = DEFAULT_MIMETYPE
     elif type(file_type) == bytes:
         file_type = file_type.decode()
     return file_type
@@ -139,7 +143,7 @@ def get_domain(url: str) -> str:
     """
     Gets domain from an URL with random number of domain levels.
     """
-    domain_parts = url.split('/')
+    domain_parts = url.split(URL_DELIMITER)
     if len(domain_parts) >= 2:
         full_domain = domain_parts[2]
     else: