From 43c7303a446811a0618fe9900fc6428f3dc00b5d Mon Sep 17 00:00:00 2001
From: Mert Emirimam <48881002+mertemr@users.noreply.github.com>
Date: Sat, 14 Jun 2025 15:01:56 +0300
Subject: [PATCH 1/2] Add support for random server selection in TCP and HTTP
 backends

---
 mjml/settings.py | 2 ++
 mjml/tools.py    | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/mjml/settings.py b/mjml/settings.py
index 714d92a..c8c82a6 100644
--- a/mjml/settings.py
+++ b/mjml/settings.py
@@ -9,6 +9,7 @@
 
 # tcpserver backend mode configs
 MJML_TCPSERVERS = getattr(settings, 'MJML_TCPSERVERS', [('127.0.0.1', 28101)])
+MJML_TCPSERVERS_USE_RANDOM = getattr(settings, 'MJML_TCPSERVERS_RANDOM', True)
 assert isinstance(MJML_TCPSERVERS, (list, tuple))
 for t in MJML_TCPSERVERS:
     assert isinstance(t, (list, tuple)) and len(t) == 2 and isinstance(t[0], str) and isinstance(t[1], int)
@@ -18,6 +19,7 @@
     'URL': 'https://api.mjml.io/v1/render',
     'HTTP_AUTH': None,  # None (default) or ('login', 'password')
 }])
+MJML_HTTPSERVERS_USE_RANDOM = getattr(settings, 'MJML_HTTPSERVERS_RANDOM', True)
 assert isinstance(MJML_HTTPSERVERS, (list, tuple))
 for t in MJML_HTTPSERVERS:
     assert isinstance(t, dict)
diff --git a/mjml/tools.py b/mjml/tools.py
index c064fdd..7c32a64 100644
--- a/mjml/tools.py
+++ b/mjml/tools.py
@@ -59,7 +59,8 @@ def socket_recvall(sock: socket.socket, n: int) -> Optional[bytes]:
 def _mjml_render_by_tcpserver(mjml_code: str) -> str:
     if len(mjml_settings.MJML_TCPSERVERS) > 1:
         servers = list(mjml_settings.MJML_TCPSERVERS)[:]
-        random.shuffle(servers)
+        if mjml_settings.MJML_TCPSERVERS_USE_RANDOM:
+            random.shuffle(servers)
     else:
         servers = mjml_settings.MJML_TCPSERVERS
     mjml_code_data = force_bytes(mjml_code)
@@ -102,7 +103,8 @@ def _mjml_render_by_httpserver(mjml_code: str) -> str:
 
     if len(mjml_settings.MJML_HTTPSERVERS) > 1:
         servers = list(mjml_settings.MJML_HTTPSERVERS)[:]
-        random.shuffle(servers)
+        if mjml_settings.MJML_HTTPSERVERS_USE_RANDOM:
+            random.shuffle(servers)
     else:
         servers = mjml_settings.MJML_HTTPSERVERS
 

From 0a85e28d6882b1b74ee58ba89277d1e636c3a9e7 Mon Sep 17 00:00:00 2001
From: Mert Emirimam <48881002+mertemr@users.noreply.github.com>
Date: Sat, 14 Jun 2025 15:05:03 +0300
Subject: [PATCH 2/2] Fix condition checks for random server selection in TCP
 and HTTP backends

---
 mjml/tools.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mjml/tools.py b/mjml/tools.py
index 7c32a64..81165ea 100644
--- a/mjml/tools.py
+++ b/mjml/tools.py
@@ -59,7 +59,7 @@ def socket_recvall(sock: socket.socket, n: int) -> Optional[bytes]:
 def _mjml_render_by_tcpserver(mjml_code: str) -> str:
     if len(mjml_settings.MJML_TCPSERVERS) > 1:
         servers = list(mjml_settings.MJML_TCPSERVERS)[:]
-        if mjml_settings.MJML_TCPSERVERS_USE_RANDOM:
+        if mjml_settings.MJML_TCPSERVERS_USE_RANDOM is True:
             random.shuffle(servers)
     else:
         servers = mjml_settings.MJML_TCPSERVERS
@@ -103,7 +103,7 @@ def _mjml_render_by_httpserver(mjml_code: str) -> str:
 
     if len(mjml_settings.MJML_HTTPSERVERS) > 1:
         servers = list(mjml_settings.MJML_HTTPSERVERS)[:]
-        if mjml_settings.MJML_HTTPSERVERS_USE_RANDOM:
+        if mjml_settings.MJML_HTTPSERVERS_USE_RANDOM is True:
             random.shuffle(servers)
     else:
         servers = mjml_settings.MJML_HTTPSERVERS