Lua library for generating a unique ID for OpenResty

This Lua library is a unique ID generator in OpenResty.

You can use it to generate a unique ID that will not be duplicated for your OpenResty.

(13-bit millisecond-level timestamp)-(12-bit IP address)-(6-bit Nginx Worker PID)-(3 bit Nginx Worker number)-(6-bit auto-increasing random number)

E.g : 1523881864432-010020100149-087846-000-005964

1. Perform initialization in init_by_lua or init_by_lua_file :

--Load Unique ID library and initialize
require("unique_id");
unique_id.init();

2. Use Unique ID library in your Lua script :

local id = unique_id.id();

Test using Apache httpd ab tool

Windows

200000 requests and 500 concurrent

No duplicate value.

Linux

200000 requests and 500 concurrent

No duplicate value.