I need to make a search engine for job postings. Are there any resources about algorithms out there? The best I can think of is doing really simple stuff. And integral word count.

I'm having trouble finding resources. I want to have a path for myself to scale on the algorithms to allow multiple servers and obviously to speed up over time since data will be forever growing.

Right now it is going to start with job searching (indexing job description and etc...) but it will quickly grow to people searching for posts in discussions. And a whole lot more.

Thanks