From 901bebdc14f00f7fffdd61ca4a61698dfed69f86 Mon Sep 17 00:00:00 2001 From: EuAndreh Date: Sat, 14 Nov 2020 15:44:04 -0300 Subject: Spell check, add translation files and publish article on local-first software --- ...ocal-first-beyond-the-crdt-silver-bullet.slides | 270 +++++++++++++++++++++ 1 file changed, 270 insertions(+) create mode 100644 _slides/2020-11-14-on-local-first-beyond-the-crdt-silver-bullet.slides (limited to '_slides/2020-11-14-on-local-first-beyond-the-crdt-silver-bullet.slides') diff --git a/_slides/2020-11-14-on-local-first-beyond-the-crdt-silver-bullet.slides b/_slides/2020-11-14-on-local-first-beyond-the-crdt-silver-bullet.slides new file mode 100644 index 0000000..425648f --- /dev/null +++ b/_slides/2020-11-14-on-local-first-beyond-the-crdt-silver-bullet.slides @@ -0,0 +1,270 @@ +--- + +title: 'On "local-first": beyond the CRDT silver bullet' + +date: 2020-11-14 + +layout: slides + +lang: en + +ref: on-local-first-beyond-the-crdt-silver-bullet + +--- + +# On local-first + +Beyond the CRDT silver bullet + +--- + +# Part 1 + +Exposition + +--- + +## "cloud apps" vs "old-fashioned apps" + +--- + +## Target + +- documents +- files +- personal data repositories + +Not: banking services, e-commerce, social networking, ride-sharing, *etc*. + +--- + +## 7 Ideals for local-first software + +--- + +### 1 - No Spinners: Your Work at Your Fingertips + +--- + +### 2 - Your Work Is Not Trapped on One Device + +--- + +### 3 - The Network Is Optional + +--- + +### 4 - Seamless Collaboration with Your Colleagues + +--- + +### 5 - The Long Now + +--- + +### 6 - Security and Privacy by Default + +--- + +### 7 - You Retain Ultimate Ownership and Control + +--- + +## Towards a Better Future + +CRDTs (Conflict-free Replicated Data Types) as a Foundational Technology + +--- + +### Use case + +``` +# in node A and node B +s = "Hello, World" + +# in node A +s = "Hello, Alice" + +# in node B +s = "Hello, Bob" +``` + +How to reconcile those? +- `Hello, ABloibce` +- `Hello, AliceBob` +- `Hello, BobAlice` +- `Hello, Alice` +- `Hello, Bob` + +--- + +Existing CRDTs differ: +- performance +- storage +- compression +- metadata overhead + +--- + +Hint towards the "automerge" CRDT + +--- + +*show comparison table, page 9* + +--- + +# Part 2 + +Critique + +--- + +### Software license + +> In our opinion, maintaining control and ownership of data does not mean that +> the software must necessarily be open source. + +--- + +#### Example 1 - intentional restriction + +```bash +#!/bin/sh + +TODAY=$(date +%s) +LICENSE_EXPIRATION=$(date -d 2020-10-27 +%s) + +if [ $TODAY -ge $LICENSE_EXPIRATION ]; then + echo 'License expired!' + exit 1 +fi + +echo $((2 + 2)) +``` + +```bash +# today +$ ./useful-adder.sh +4 +# tomorrow +$ ./useful-adder.sh +License expired! +``` + +--- + +#### Example 2 - unintentional restriction + +```bash +# today +$ useful-program +# ...useful output... + +# tomorrow, with more data +$ useful-program +ERROR: Panic! Stack overflow! +``` +--- + +### local-first **requires** free/libre software + +Otherwise "The Long Now" (ideal nº5) is lost + +--- + +### Denial of existing solutions + +> In principle it is possible to collaborate without a repository service, +> e.g. by sending patch files by email, but the majority of Git users rely +> on GitHub. + +Solution: either GitHub+CRDTs or `git` **`send-email`** + +--- + +### Plain text formats + +> Git is highly optimized for code and similar line-based text file + +It even pulls software to the plain text direction, e.g.: +- delivery-templates +- `common-core.protocols.config` + +Why not exploit that more? + +--- + +### Ditching of web applications + +> The architecture of web apps remains fundamentally server-centric + +Disagree. Contrast [PouchDB][pouchdb] with Android [Instant Apps][instant-apps] + +[pouchdb]: https://pouchdb.com/ +[instant-apps]: https://developer.android.com/topic/google-play-instant + +??? + +Talk on dynamic content + +--- + +### Costs are underrated + +- storage +- backups +- maintenance + +Example: blog vs vlog + +--- + +### Real-time collaboration a bit overrated + +It is only possible on the presence of reliable, medium-quality network +connection + +> X also works when inside an elevator, subway or plane! + + + +--- + +### On CRDTs and developer experience + +> For an app developer, how does the use of a CRDT-based data layer compare to +> existing storage layers like a SQL database, a filesystem, or CoreData? Is a +> distributed system harder to write software for? + +Yes. + +See "[A Note on Distributed Computing][note-dist-comp]" + +[note-dist-comp]: https://web.archive.org/web/20130116163535/http://labs.oracle.com/techrep/1994/smli_tr-94-29.pdf + +--- + +## Conclusion + +Why this is a "paper I love": it took offline-first and ran with it. + +But a pinch of CRDT won't make the world local-first. + +The tricky part is the end of the sentence: "**in spite of the Cloud**". + +--- + +## Thank you! + +References: + +1. these slides: [{{ site.tld }}/slides.html]({% link slides.md %}) +2. [prose version of this presentation]({% link _articles/2020-11-14-local-first-software-you-own-your-data-in-spite-of-the-cloud-article-review.md %}) +3. "[Local-First Software: You Own Your Data, in spite of the Cloud](https://martin.kleppmann.com/papers/local-first.pdf)", + by M. Kleppmann, A. Wiggins, P. Van Hardenberg and M. F. McGranaghan +4. [The Morning Paper](https://blog.acolyer.org/2019/11/20/local-first-software/) + article +5. "[A Note on Distributed Computing][note-dist-comp]", by J. Waldo, G. Wyant, A. Wollrath and S Kendall + +[note-dist-comp]: https://web.archive.org/web/20130116163535/http://labs.oracle.com/techrep/1994/smli_tr-94-29.pdf -- cgit v1.2.3