Don't cache in lua.

Remove more unnecessary code.

docker/nginx/conf.d/include/location-skylink

@@ -9,14 +9,6 @@ limit_conn downloads_by_ip 100; # ddos protection: max 100 downloads at a time
 # this is important because we want only one format in cache keys and logs
 set_by_lua_block $skylink { return require("skynet.skylink").parse(ngx.var.skylink) }
 
-# $skylink_v1 and $skylink_v2 variables default to the same value but in case the requested skylink was:
-# a) skylink v1 - it would not matter, no additional logic is executed
-# b) skylink v2 - in a lua block below we will resolve the skylink v2 into skylink v1 and update
-#      $skylink_v1 variable so then the proxy request to skyd can be cached in nginx (proxy_cache_key
-#      in proxy-cache-downloads includes $skylink_v1 as a part of the cache key)
-set $skylink_v1 $skylink;
-set $skylink_v2 $skylink;
-
 # variable for Skynet-Proof header that we need to inject
 # into a response if the request was for skylink v2
 set $skynet_proof '';
@@ -53,5 +45,4 @@ proxy_set_header User-Agent: Sia-Agent;
 # in case the requested skylink was v2 and we already resolved it to skylink v1, we are going to pass resolved
 # skylink v1 to skyd to save that extra skylink v2 lookup in skyd but in turn, in case skyd returns a redirect
 # we need to rewrite the skylink v1 to skylink v2 in the location header with proxy_redirect
-proxy_redirect $skylink_v1 $skylink_v2;
+proxy_pass http://sia:9980/skynet/skylink/$skylink$path$is_args$args;
-proxy_pass http://sia:9980/skynet/skylink/$skylink_v1$path$is_args$args;

docker/nginx/conf.d/include/proxy-cache-downloads

@@ -1,12 +1,4 @@
 add_header X-Proxy-Cache $upstream_cache_status; # add response header to indicate cache hits and misses
 
-# bypass - this will bypass cache hit on request (status BYPASS)
+# disable caching
-# but still stores file in cache if cache conditions are met
+proxy_no_cache "1";
-proxy_cache_bypass $cookie_nocache $arg_nocache "1";
-
-# no cache - this will ignore cache on request (status MISS)
-# and does not store file in cache under no condition
-set $nocache "1";
-
-# disable cache when nocache is set or skyd cache is enabled
-proxy_no_cache $nocache;

docker/nginx/libs/skynet/account.lua

@@ -14,9 +14,6 @@ local anon_limits = {
     ["registry"] = 250
 }
 
--- basic caching of user data
-local curr_limits
-
 -- handle request exit when access to portal should be restricted to authenticated users only
 function _M.exit_access_unauthorized(message)
     ngx.status = ngx.HTTP_UNAUTHORIZED
@@ -38,10 +35,6 @@ function _M.accounts_enabled()
 end
 
 function _M.get_account_limits()
-    if curr_limits ~= nil then
-        return curr_limits
-    end
-
     local cjson = require('cjson')
 
     -- TODO: This needs to accommodate authorization tokens and api keys.
@@ -66,8 +59,7 @@ function _M.get_account_limits()
         end
     end
 
-    curr_limits = cjson.decode(ngx.var.account_limits)
+    return cjson.decode(ngx.var.account_limits)
-    return curr_limits
 end
 
 -- detect whether current user is authenticated