Minimal Sentinel example added.

Author: antirez

examples/sentinel.rb

@@ -0,0 +1,19 @@
+require 'redis'
+
+Sentinels = [{:host => "127.0.0.1", :port => 26379},
+             {:host => "127.0.0.1", :port => 26380}]
+r = Redis.new(:url => "sentinel://mymaster", :sentinels => Sentinels, :role => :master)
+
+# Set keys into a loop.
+#
+# The example traps errors so that you can actually try to failover while
+# running the script to see redis-rb reconfiguring.
+(0..1000000).each{|i|
+    begin
+        r.set(i,i)
+        puts i
+    rescue
+        puts "ERROR #{i}"
+    end
+    sleep(0.01)
+}