Differences

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--- admin:embed_the_power_of_lua_into_nginx [2015/09/04 23:49] – [Solution] ryan
+++ admin:embed_the_power_of_lua_into_nginx [2015/09/05 08:24] (current) – [Testing] ryan
@@ Line 188: / Line 188: @@
 ==== Testing ====
-To test out the new functionality, we modify the server block to call a Lua script on each request:
+To test out the new functionality, we modify the server block to call a Lua script on any request:
 <file c default.conf>
 server {
@@ Line 201: / Line 201: @@
 }
 </file>
-Our test file is called ''reqhash.lua'' and is located in the ''lua'' folder of the server path (default location is ''/etc/nginx''). It will be run on every request received by the server.
+Our test file is called ''reqhash.lua'' and is located in the ''lua'' folder of the server path (default location is ''/etc/nginx''). When the first request comes in, Nginx will load the script from disk and pass it to LuaJIT, that will compile parts of it to native code as they are invoked. Every subsequent request will run the cached machine code.
 The code is pretty straightforward:
@@ Line 214: / Line 214: @@
 ngx.header.content_type = 'text/plain';
 for k, v in pairs(headers) do
-    print(string.format("%s\t%s: %s", base64(hmacdigest('sha256', v, k, true)), tostring(k), tostring(v)))
+    print(string.format("%s\t%s: %s", base64(hmacdigest('sha256', v, k, true)), k, v))
 end
 </file>