Fast trigram based code search

(github.com/sourcegraph)

47 points by cv_h 2 days ago|9 comments

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fmajid 18 hours ago

Keep in mind Source graph has done an open-source bait-and-switch before:

https://news.ycombinator.com/item?id=36584656

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darkamaul 22 hours ago

GitHub Code Search has too many quirks compared to the zoekt powered alternatives (cs.android.com, cs.bazel.build) which feel far more intuitive.

I wish Microsoft would invest more in improving it - especially since Sourcegraph can't search private repositories, leaving GitHub's tool as the only real option for many codebases.

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Scaevolus 16 hours ago

None of Google's public source search engines (android, chromium, bazel) use Zoekt. They use Google's web indexing technology adapted for trigrams, which was mostly developed to support their massive internal monorepo, but exposed for a few of their major open source projects too.

You can index private repos with Sourcegraph, but it's a paid feature ($19/mo/user+).

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sluongng 16 hours ago

> They use Google's web indexing technology adapted for trigrams, which was mostly developed to support their massive internal monorepo

Do you have a source for this? I would love to read more about it.

In the doc of the Zoekt repo, it says

> What does cs.bazel.build run on?

> Currently, it runs on a single Google Cloud VM with 16 vCPUs, 60G RAM and an attached physical SSD.

https://github.com/sourcegraph/zoekt/blob/main/doc/faq.md#wh...

so at least they were using Zoekt up until a certain point in the past.

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Scaevolus 16 hours ago

Oops, I guess that one is small enough to use Zoekt. Note how different the interface is than Android and Chromium's code search.

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hanwenn 23 hours ago

more background: https://sourcegraph.com/blog/zoekt-creating-internal-tools-a...

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arccy 20 hours ago

There's also https://github.com/google/codesearch for local only search

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nbenitezl 6 hours ago

I use https://codesearch.debian.net/ a lot, and it's based on that according to https://codesearch.debian.net/about

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N_Lens 17 hours ago

Excellent tool for larger codebases!