Magento Different Behave in Nginx - apache

Question

One server same source code Magento Enterprise , if i run it in Apache after post request one Get request received , but in nginx not work , and shows me page not found 404.
I check it using firebug in Firefox .
URL : /customer/account/create/
After click Subbmit it redirect to
URL : /customer/account/index/ = and user longed page come
But in Nginx
URL : /customer/account/create/
After click Subbmit it redirect to
http://52.88.205.17/customer/account/createpost/ = 404 page not found
Apache Server default configuration and htaccess is
Options +FollowSymLinks
RewriteEngine on
RewriteRule ^api/rest api.php?type=rest [QSA,L]
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteCond %{REQUEST_METHOD} ^TRAC[EK]
RewriteRule .* - [L,R=405]
RewriteCond %{REQUEST_URI} !^/(media|skin|js)/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule .* index.php [L]
And Nginx Configuration is
server {
listen 80;
server_name http://52.88.205.17;
location / {
root /var/www/html/src/;
index index.php;
try_files $uri $uri/ #handler;
}
location #handler { ## Magento uses a common front handler
rewrite / /index.php;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /var/www/html/src/;
}
#location /index.php/admin { deny all;}
#Disable .htaccess and Hidden Files
location /. { return 404; }
location ~ .php/ { ## Forward paths like /js/index.php/x.js to relevant handler
rewrite ^(.*.php)/ $1 last; }
location ~ \.php$ {
root /var/www/html/src/;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}

Answer 1

I solved this problem Increasing PHP Buffer Size
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;