feat(users/flokli): add ASG Lightning talk presentation r/6830

This adds the materials for the lightning talk held at All Systems Go
Conference 2023, Berlin.

Talk lives at https://media.ccc.de/v/all-systems-go-2023-245-tvix-store

Change-Id: I114b1aec9f1953c148dd29ca88888c16b9fc655d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9751
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

1 files changed, 138 insertions, 0 deletions

diff --git a/users/flokli/presentations/2023-09-13-asg-tvix-store/presentation.md b/users/flokli/presentations/2023-09-13-asg-tvix-store/presentation.md
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+---
+author:
+- Florian Klink
+date: 2023-09-09
+title: "tvix-store: A content-addressed file system and sync protocol"
+theme: moon
+revealOptions:
+  transition: 'fade'
+---
+
+## tvix-store
+### A content-addressed file system and sync protocol
+
+2023-09-13
+
+Florian Klink / flokli
+
+---
+
+## Whoami
+
+- <!-- .element: class="fragment" -->
+  flokli
+- <!-- .element: class="fragment" -->
+  Nix/NixOS contributor
+  - maintain systemd, nss and more low-level stuff there
+- <!-- .element: class="fragment" -->
+  Freelance Nix/DevOps consultant
+
+Note: more Kubernetes/DevOps exposure with work
+
+---
+
+## What is tvix-store?
+- <!-- .element: class="fragment" -->
+  A new implementation of a content-addressed "storage system"
+  - <!-- .element: class="fragment" -->
+    part of the Tvix Project, a (WIP) reimplementation of Nix and auxillary components in Rust
+  - <!-- .element: class="fragment" -->
+    Storage model: think about git trees and its Merkle DAG…
+  - <!-- .element: class="fragment" -->
+    … but with nicer wire format (`.proto`) and hash function (blake3)
+
+---
+
+## Storage model
+- <!-- .element: class="fragment" -->
+  Once you know the root: everything else is content-addressed
+   - <!-- .element: class="fragment" -->
+     No timestamps, no uid/gid, no xattrs, only one way to represent the same tree
+- <!-- .element: class="fragment" -->
+  Automatic dedup of identical subtrees in different file system trees
+- <!-- .element: class="fragment" -->
+  Automatic dedup of identical blobs (and you can do more chunking underneath too)
+
+---
+
+## Storage model (cont.)
+- <!-- .element: class="fragment" -->
+  Granular seekable access into blobs
+- <!-- .element: class="fragment" -->
+  verified streaming thanks to BLAKE3 and Bao, faulty data is detected early on
+- <!-- .element: class="fragment" -->
+  Everything below can be retrieved from anyone without having to trust (P2P substitution, CDNs, …)
+
+---
+
+## Usecases
+- <!-- .element: class="fragment" -->
+  File system tree delivery
+- <!-- .element: class="fragment" -->
+  Container image delivery
+- <!-- .element: class="fragment" -->
+  Backing store for VCS
+- <!-- .element: class="fragment" -->
+  Granular access into large datasets
+
+---
+
+## Status
+- <!-- .element: class="fragment" -->
+  In-memory backend, a local K/V backend (Sled)
+- <!-- .element: class="fragment" -->
+  FUSE filesystem
+- <!-- .element: class="fragment" -->
+  A gRPC API to transfer things, bindings for golang and rust
+- <!-- .element: class="fragment" -->
+  some object storage backends in development (GCS, NATS)
+- <!-- .element: class="fragment" -->
+  FUTUREWORK: more storage backends / store composition / in-kernel module?
+
+Notes: of course you can use your own network protocol too, like HTTP CAS or iroh....plug different stores together to represent caches, blobfs
+
+---
+
+## Contributing
+
+- <!-- .element: class="fragment" -->
+  Join the IRC channel (`#tvl` on `hackint`), bridged to Matrix and XMPP
+- <!-- .element: class="fragment" -->
+  Check our issue tracker
+- <!-- .element: class="fragment" -->
+  Try to use it and tell us how you broke it!
+
+Note: if this sounds useful to you, reach out!
+
+---
+
+# Thanks!
+
+<style>
+.container{
+    display: flex;
+}
+.col{
+    flex: 1;
+}
+</style>
+
+<div class="container">
+
+<div class="col">
+Florian Klink / <a href="https://flokli.de">flokli.de</a><br />
+<img src="qrcode-flokli.svg" />
+</div>
+
+<div class="col">
+Tvix / <a href="https://tvix.dev">tvix.dev</a><br />
+<img src="qrcode-tvix.svg" />
+</div>
+
+</div>
+
+---
+
+## Structure
+
+[tvix-store graph](tvix-store-graph-blob-directory.svg)