Ngx_http_compose_filter_module is a project mainly written in C and PERL, based on the View license.
Compose module for nginx.
This module allows compose several subrequests into one reply. The same thing may be achieved by SSI, but unlike SSI this module will also set Content-Length and allow range requests.
Basically it grabs X-Compose and X-Compose-Length headers from original reply and does the following:
1. If X-Compose-Length present, sets Content-Length to it's value.
2. Composes multiple subrequests from X-Compose headers.When used without X-Compose-Length it's basically identical to SSI and not needed. The X-Compose-Length header must be calculated correctly by somebody.
To compile nginx with compose module, use "--add-module