I have an occasional need for extensive logging on a very hot codepath. I’m
wondering what the best approach would be to this?
I’ve seen some empty log functions, like:
local log
if loglevel > 2 then
log = ngx.log
else
log = function() end
end
But I’d expect it to still be a function call at runtime that I’d rather avoid.
(Though it would be nice if LuaJIT would optimise it away)
Any best practices to share?
Thijs
