Show HN: Search code in GitHub repos using regular expressions

Impressive! Really fast, full featured code search across a huge corpus.

1. How did you build the index? Did you use a GitHub dump of some sort? How often do you refresh it?

2. Is it Elasticsearch or similar or a completely custom engine?

3. What kind of RAM/CPU are you using to power it?

4. Any plans to open source the code or commercialize the technology?

I could absolutely imagine paying for a private code search engine like this to run against a large internal company codebase spread across many repositories.

You have no idea how often I've wanted something like this for GitHub. Thanks so much!

Amazin, why Microsoft hasn't built this for GitHub yet is beyond me.

Can it grep on individual repos?

I would say this needs a list of indexed repos and mainly an explanation of how it exactly works to be usable (how's the index build and how often it's refreshed, what types of files are being indexed, etc.). Otherwise, there's no much value in searching in an unknown data, is it?

Anyway, to not only criticize, good job! It's definitely one of GitHub's missing features. And I can imagine it's not an easy job to build something like that. But as I wrote, it really has to be well explained to be actually usable.

I looked for strings that I am sure only appear in my code, and I found several copies of them, but not mine.