Upload scalability

hi all,

        i am using upload module to post file to the server. how can

i improve scalability of the server to upload files . one server is
running and receiving all uploded files . if i add three or four server
on the backend .will it improve scalability?
here is my configuration there is no need for backend server but if i
add 3 or 4 backend server will it improve scalability?

i need good tuning to get more concurrency

worker_processes 20;

error_log logs/error.log notice;

working_directory /usr/local/nginx;

events {
worker_connections 1024;
}

http {
include mime.types;
default_type application/octet-stream;

server {
listen 80;
client_max_body_size 100m;

Upload form should be submitted to this location

location /upload {

Pass altered request body to this location

upload_pass @test;

Store files to this directory

The directory is hashed, subdirectories 0 1 2 3 4 5 6 7 8 9 should

exist
upload_store /tmp 1;

Allow uploaded files to be read only by user

upload_store_access user:r;

Set specified fields in request body

upload_set_form_field “${upload_field_name}_name” $upload_file_name;
upload_set_form_field “${upload_field_name}_content_type”
$upload_content_type;
upload_set_form_field “${upload_field_name}_path” $upload_tmp_path;

Inform backend about hash and size of a file

upload_aggregate_form_field “${upload_field_name}_md5”
$upload_file_md5;
upload_aggregate_form_field “${upload_field_name}_size”
$upload_file_size;

upload_pass_form_field “^submit$|^description$”;
}

Pass altered request body to a backend

location @test {
proxy_pass http://localhost:8080;
}
}
server{
listen 8080;
}
}

Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,189350,189350#msg-189350

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