Updatetracker allows to post updates from multiple places and to query what updates happened when.

This is a useful component in monitoring liveliness of distributed IT systems.

Usage

curl -X POST http://updatetracker.example.com/clear
curl -X POST http://updatetracker.example.com/update/foo
curl http://updatetracker.example.com/update

Setup

In apache config add

<VirtualHost *>
  ServerName updatetracker.example.com
  ScriptAlias / /path/to/updatetracker.cgi/
</VirtualHost>

It needs 1 writable directory to store its updates in.