Ljubljana, Slovenia

Lua

Mon, Mar 13, 2017

Calling Go functions from LUA

A few days ago, I came across an interesting article, Calling Go Functions from Other languages. In it, Vladimir Vivien creates a small shared library in Go, which he then invokes from C, Java using Java Native Access, and from Python, Node, Ruby using Foreign Function Interface libraries. I thought it would be a fun exercise to interface LUA, or more accurately LUAJIT with the library which was written here.

Sun, Jan 8, 2017

Improving NGINX LUA cache purges

A few months ago I wrote an article on how to clear single cache items from NGINX with LUA, with a simple O(1) complexity. While it’s certainly possible to use it for simple and low-impact cache invalidation, there is a need for deleting huge parts of the cache with a wildcard pattern.

Wed, Nov 2, 2016

Purging cached items from NGINX with LUA

Those of you any how familiar with scaling up a service, will by now be familiar with NGINX as a strong workhorse, when it comes to proxy HTTP requests between multiple backend servers. There’s one thing the open source NGINX version doesn’t do however - you can’t issue a PURGE request against a cached resource and delete it from the cache. That is, until we bring in LUA.

Thu, Jul 18, 2013

API Backpressure

Books

Menu

About
My products

Posts

Sun, Feb 21, 2021

Real world optimisation

Sun, Feb 7, 2021