SAPO's text advertisement system is a service that provides contextualized text-ads on webpages or searchpages developed in house by SAPO for 4 years now.
The current implementation serves at peak +90M ad requests per day;
It peaks at ~ 2500 requests per second.
Average latency is 33 milisecs
99.9% of requests are served under 150 milisecs
The goal of this presentation is to broadly describe how such a system works and focus on the following topics:
- availability & reliability
- technologies and software used.