Main request hangs with multiple SSI subrequests

Hello,

After reading the issue #23 I have updated my configuration to the following:
https://gist.github.com/frozenminds/5a1f0b9047c7af69ec61

Each SSI request will try to get the content from Redis, if key is not saved in cache yet, it will fallback to a PHP route which will generate the content, save it to Redis and return the output. The second time, Nginx will retrieve the content from Redis because it was cached.

On a page I have 4 SSI calls. The last one hangs on the very first request before the page is also stored in Nginx's FastCgi cache.

<!-- include virtual="/ssi?action=a -->
<!-- include virtual="/ssi?action=b -->
<!-- include virtual="/ssi?action=c&product_id=123 -->
<!-- include virtual="/ssi?action=c&category_id=999 -->

I am aware of this:
http://wiki.nginx.org/HttpLuaModule#Mixing_with_SSI_Not_Supported
But what I do not understand, do I have to completely turn off the SSI module and write my own module that will parse the SSI tags () and then use ngx.location.capture or ngx.location.capture_multi the get the content?

If I do have to parse the SSI tags, do you have any idea where do I start from?
Could you please guide me further?

Thank you in advance!
Boby

Start by reproducing the configuration from the linked gist and reviewing issue #23 plus the documented SSI and Lua-module incompatibility. Trace the four SSI subrequests, including their Redis and PHP fallback paths, and determine whether the hang is reproducible. Done means identifying a supported configuration or clearly documenting that custom SSI handling is required.