Magento 503 Backend unavailable with Fastly

[mikesam202abc5]

I have configured Fastly. 

website frontend is working really very good with fastly.

But whenever i save anything in admin I am getting 503 for magento backend.

kindly help

[amitsamsukha · Accepted solution]

@mikesam202abc5 ,

you can create VCL snippets within fastly 

for admin, you need to create a snippet which increases the timeout for admin. 

if (bereq.url.path ~ "magentoadmin") {
   set bereq.first_byte_timeout = 8000s;
   set bereq.connect_timeout = 8000s;
   set bereq.between_bytes_timeout = 8000s;
}

here magentoadmin is URI for admin 

php bin/magento info:adminuri

[mikesam202abc5]

@amitsamsukha,

thanks this works!