- ops/nginx_conf/targetinfo.lua's wildcard-subdomain lookup fallback used
classic LuaSocket (require("socket.unix")) instead of an OpenResty
cosocket. LuaSocket is blocking, and called from an nginx worker it
stalls the ENTIRE worker — every other in-flight connection on it — for
the round-trip to the Node app. Worse, the Node side never
newline-terminated its response, so the old blocking receive() only ever
returned via its read-timeout-then-partial-read fallback, meaning every
single cache-miss lookup paid a fixed timeout penalty while blocking the
whole worker. Replaced with an ngx.socket.tcp() cosocket (unix-domain via
"unix:/path", the only cosocket API this lua-nginx-module ships) and
newline-terminated the Node service's responses so receive() actually
completes instead of timing out. Verified against a live container:
previously this crashed OpenResty's Lua VM entirely
(ngx.socket.unix doesn't exist); fixed version resolves fresh wildcard
subdomains in ~2ms.
- Add gzip compression (`compression` middleware) and far-future
Cache-Control on static assets (7d for vendor libs under
/static-modules, 1h for the app's own /static JS/CSS, which isn't
cache-busted). The admin UI is a traditional multi-page app that loads
~13 separate vendor/app JS+CSS files on every full navigation; previously
none of them were compressed and Cache-Control was `max-age=0` (Express's
default), forcing a revalidation round-trip for every asset on every page
view.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
wmantly
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