From 560fdc935c871339f560bae9b3c6d111c9323c47 Mon Sep 17 00:00:00 2001
From: Mattias Geniar <m@ttias.be>
Date: Mon, 3 Dec 2012 21:41:22 +0100
Subject: [PATCH] Backends: included a redirector example for multiple backends

---
 custom.backend.vcl-sample | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/custom.backend.vcl-sample b/custom.backend.vcl-sample
index 5e1df9d..3e0a2f7 100644
--- a/custom.backend.vcl-sample
+++ b/custom.backend.vcl-sample
@@ -13,3 +13,33 @@ backend default {
     }
     .first_byte_timeout = 300s;
 }
+
+# Below is an example redirector based on the Client IP (same returning class C subnet IP will get
+# rerouted to the same backend, as long as it's available).
+#
+# In order for these to work, you need to define 2 backends as shown above named 'web1' and 'web2' (replace 'default'
+# from the example above).
+director pool_clientip client {
+  {
+    .backend = web1
+    .weight = 1;
+  }
+  {
+    .backend = web2
+    .weight = 1;
+  }
+}
+
+# Below is an example that will round-robin (based on the weight) to each backend.
+# Web2 will get twice the hits as web1 since it has double the weight (= preference).
+director pool_clientip {
+  {
+    .backend = web1
+    .weight = 1;
+  }
+  {
+    .backend = web2
+    .weight = 2;
+  }
+}
+