Slice filter.

Splits a request into subrequests, each providing a specific range of response.
The variable "$slice_range" must be used to set subrequest range and proper
cache key.  The directive "slice" sets slice size.

The following example splits requests into 1-megabyte cacheable subrequests.

server {
    listen 8000;

    location / {
        slice 1m;

        proxy_cache cache;
        proxy_cache_key $uri$is_args$args$slice_range;
        proxy_set_header Range $slice_range;
        proxy_cache_valid 200 206 1h;
        proxy_pass http://127.0.0.1:9000;
    }
}

auto/options

@@ -71,6 +71,7 @@ HTTP_ACCESS=YES
 HTTP_AUTH_BASIC=YES
 HTTP_AUTH_REQUEST=NO
 HTTP_USERID=YES
+HTTP_SLICE=NO
 HTTP_AUTOINDEX=YES
 HTTP_RANDOM_INDEX=NO
 HTTP_STATUS=NO
@@ -226,6 +227,7 @@ do
         --with-http_random_index_module) HTTP_RANDOM_INDEX=YES      ;;
         --with-http_secure_link_module)  HTTP_SECURE_LINK=YES       ;;
         --with-http_degradation_module)  HTTP_DEGRADATION=YES       ;;
+        --with-http_slice_module)        HTTP_SLICE=YES             ;;
 
         --without-http_charset_module)   HTTP_CHARSET=NO            ;;
         --without-http_gzip_module)      HTTP_GZIP=NO               ;;
@@ -394,6 +396,7 @@ cat << END
   --with-http_random_index_module    enable ngx_http_random_index_module
   --with-http_secure_link_module     enable ngx_http_secure_link_module
   --with-http_degradation_module     enable ngx_http_degradation_module
+  --with-http_slice_module           enable ngx_http_slice_module
   --with-http_stub_status_module     enable ngx_http_stub_status_module
 
   --without-http_charset_module      disable ngx_http_charset_module