Example - lua-resty-memcached
lua_package_path "/path/to/lua-resty-memcached/lib/?.lua;;";
server {
location /test {
content_by_lua '
local memcached = require "resty.memcached"
local memc, err = memcached:new()
if not memc then
ngx.say("failed to instantiate memc: ", err)
return
end
memc:set_timeout(1000) -- 1 sec
-- or connect to a unix domain socket file listened
-- by a memcached server:
-- local ok, err = memc:connect("unix:/path/to/memc.sock")
local ok, err = memc:connect("127.0.0.1", 11211)
if not ok then
ngx.say("failed to connect: ", err)
return
end
local ok, err = memc:flush_all()
if not ok then
ngx.say("failed to flush all: ", err)
return
end
local ok, err = memc:set("dog", 32)
if not ok then
ngx.say("failed to set dog: ", err)
return
end
local res, flags, err = memc:get("dog")
if err then
ngx.say("failed to get dog: ", err)
return
end
if not res then
ngx.say("dog not found")
return
end
ngx.say("dog: ", res)
-- put it into the connection pool of size 100,
-- with 10 seconds max idle timeout
local ok, err = memc:set_keepalive(10000, 100)
if not ok then
ngx.say("cannot set keepalive: ", err)
return
end
-- or just close the connection right away:
-- local ok, err = memc:close()
-- if not ok then
-- ngx.say("failed to close: ", err)
-- return
-- end
';
}
}