Big picture.

Signed-off-by: Mathieu Lecarme <mathieu.lecarme@af83.com>

examples/triangle/README.md

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+Triangle example
+================
+
+The front is a http server. Each web request is sent to a queue.
+workers pick tasks from the queue and answer to the right http connection.
+
+Big picture
+-----------
+
+```
+
+                           redis
+  http  +-------+        +-------+  lpoll +---------+
+<------>|       |------->| Queue |<-------|         |
+        | Front |        +-------+        | Workers |
+        |       |<------------------------|         |
+        +-------+                         +---------+
+
+```
+
+Try it
+------
+
+In a first terminal:
+
+    node front.js
+
+In a second terminal:
+
+    node worker.js & node worker.js & node worker.js & node worker.js
+
+In a third terminal:
+
+    siege -c 100 -t 30s http://localhost:1337