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I taught a bucket to speak Git

49 points

by xena

2 hours ago

| past

| 6 comments

| tigrisdata.com

| HN

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supriyo-biswas

3 minutes ago

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I wish some of this work could be upstreamed to Gitea instead?

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xena

33 seconds ago

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Author of the post here. I'll talk with someone I know at Gitea. I don't think this is viable to upstream into Gitea, but there's only one way to find out!

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znnajdla

15 minutes ago

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This was really thought provoking — it made me realize that Git just happens to use a filesystem for persistence, but doesn’t necessarily have to. A POSIX filesystem might not even be the best way to store a git repo. Makes me wonder: what else could speak Git + POSIX? Redis? Postgres? IPFS is a fun one — it’s already content addressed.

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nolist_policy

51 minutes ago

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If you want to store a git repo on S3, you can that with git-annex[1] today. It can do client side encryption and large files as well.

[1] https://git-annex.branchable.com

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colechristensen

10 minutes ago

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I did something similar, though a full reimplementation of a git and git-lfs library in Elixir. Still a work in progress though as the S3 backend isn't quite complete and there are performance problems doing some git things through S3.

https://anvil.fangorn.io/fangorn/ex_git_objectstore

The documentation isn't quite correct, but it's getting there

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ctoth

2 hours ago

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Came here for a five-gallon bucket hooked to Dulwich (archiving rain?), Slightly disappointed :)

Go Git and Dulwich and friends are indeed fun tech.

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Eikon

1 hour ago

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Most of the pain here is the typical set of issues people run into trying to make S3 a filesystem as-is, common with S3FS-family approaches.

ZeroFS (https://github.com/Barre/zerofs) is 9P/NFS/NBD over S3 on an LSM. Point stock go-git, or just /usr/bin/git, at a mount and skip the gymnastics. Rename is a metadata op in the keyspace, so you get it atomic on any S3, no Tigris-specific X-Tigris-Rename needed.

Different point on the spectrum, but less square-peg, also most probably much, much faster (it works great on linux-sized repos) :)

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znnajdla

20 minutes ago

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I wouldn’t call it gymnastics. The surprising part of the article was that Git itself is an object store that happens to use a filesystem for persistence, but an S3 bucket might actually be more suitable than a .git directory on POSIX.

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xena

1 hour ago

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Author of the article here. I'm aware of ZeroFS and other similar approaches (such as something internal at Tigris that will become public at a later date), this was more of an experiment to see how far you can get with stuff I already had "on the shelf". I am going to be improving this a fair bit; I just need to plan out what I'm gonna work on and figure out the best times to stream it, etc.