20120315 atlassian unite - dvcs

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This document discusses Atlassian's move from centralized version control systems (VCS) like Subversion to distributed VCS (DVCS) like Git and Mercurial. It provides an overview of centralized and distributed VCS, highlighting benefits of DVCS like flexibility and easier branching and merging. It also outlines Atlassian's reasons for switching, including improved developer workflow and speed. The document gives tips for making the transition like bringing over history from the old system, integrating with other tools, and using continuous integration.

Technology

Making the Switch to DVCS
Atlassians move from centralized to distributed

Samuel Le Berrigaud, Developer, Atlassian
2
Friday, April 20, 12

Samuel
Le Berrigaud

Developer relations

samuel@atlassian.com

@sleberrig

Friday, April 20, 12

DVCS @ Unite

Issue Tracker

Friday, April 20, 12

DVCS @ Unite

Content Collaboration

Friday, April 20, 12

build it

check get
in Task

write
code

Friday, April 20, 12

What is version control?

Friday, April 20, 12

What is version control?

Collaboration History Copies /Branches

Friday, April 20, 12

Centralized Version Control

Subversion
server

Friday, April 20, 12

“ Have you ever tried to merge with SVN? Need I say
more.
”

Friday, April 20, 12

The Present
(and future)

Friday, April 20, 12

Distributed Version Control

Friday, April 20, 12

Distributed Version Control

Git or Mercurial

Git or Mercurial Git or Mercurial
Git or Mercurial

Git or Mercurial Git or Mercurial

Friday, April 20, 12

“ Distributed Version Control is flexible and can fit any
workflow - you can even treat it like Subversion.
”
Steve Streeting
Inventor of SourceTree

Friday, April 20, 12

New idea?

1997
co-op

Friday, April 20, 12

New idea?

2001
arch

Friday, April 20, 12

New idea?

2003
monotone

Friday, April 20, 12

New idea?

2003
svk

Friday, April 20, 12

New idea?

2003
darcs

Friday, April 20, 12

New idea?

2005
bazaar

Friday, April 20, 12

New idea?

2005
mercurial

Friday, April 20, 12

New idea?

2005
git

Friday, April 20, 12

New idea?

2007
iPhone

Friday, April 20, 12

Why?

Development Workﬂow

Friday, April 20, 12

More Why’s?

Code without Limitations

Friday, April 20, 12

View Authors/Blame

Friday, April 20, 12

Speed is power
git rm
hg blame
hg clone
git show
git mv
hg revert
git log
hg move
hg pull -update git status
Friday, April 20, 12

Code without Limitations

Friday, April 20, 12

Branching & Merging

Friday, April 20, 12

Branching & Merging

$ svn merge

Friday, April 20, 12

Protips
• DVCS Knowledge
• Follow the Recipe
• CI is your friend

Friday, April 20, 12

DVCS Client

Git and Mercurial Mac Client

Friday, April 20, 12

FishEye - VCS to DVCS

• See commits in SVN & DVCS
• Browse source in any VCS
Subversion, Git, Hg, CVS, P4

Browse and Search source across any VCS

Friday, April 20, 12

Bring your History

Friday, April 20, 12

Tool Integration

Friday, April 20, 12
{ }

Replicate Team Process

Friday, April 20, 12

Continuous Integration
is your friend

• Vital part of dev cycle
• Run same builds against old
and new VCS
• Continuous Validation

Friday, April 20, 12

Make the Switch

• DVCS has great business and technical beneﬁts

• Atlassian is shaping the future of DVCS

Friday, April 20, 12

Learn More & Have a Play

http://blogs.atlassian.com/tag/
switch_dvcs/

Friday, April 20, 12

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Java is for many years one of the most popular programming languages, but it used to have hard times in the Serverless community. Java is known for its high cold start times and high memory footprint, comparing to other programming languages like Node.js and Python. In this talk I'll look at the general best practices and techniques we can use to decrease memory consumption, cold start times for Java Serverless development on AWS including GraalVM (Native Image) and AWS own offering SnapStart based on Firecracker microVM snapshot and restore and CRaC (Coordinated Restore at Checkpoint) runtime hooks. I'll also provide a lot of benchmarking on Lambda functions trying out various deployment package sizes, Lambda memory settings, Java compilation options and HTTP (a)synchronous clients and measure their impact on cold and warm start times.

Nordic Marketo Engage User Group_June 13_ 2024.pptx

MichaelKnudsen27

Main news related to the CCS TSI 2023 (2023/1695)

Jakub Marek

An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers. The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 . The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .

zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...

Alex Pruden

Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security. Paper Link: https://eprint.iacr.org/2024/257

Apps Break Data

Ivo Velitchkov

How information systems are built or acquired puts information, which is what they should be about, in a secondary place. Our language adapted accordingly, and we no longer talk about information systems but applications. Applications evolved in a way to break data into diverse fragments, tightly coupled with applications and expensive to integrate. The result is technical debt, which is re-paid by taking even bigger "loans", resulting in an ever-increasing technical debt. Software engineering and procurement practices work in sync with market forces to maintain this trend. This talk demonstrates how natural this situation is. The question is: can something be done to reverse the trend?

Mutation Testing for Task-Oriented Chatbots

Pablo Gómez Abajo

Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots. To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.

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20120315 atlassian unite - dvcs

1. Friday, April 20, 12

2. Making the Switch to DVCS Atlassians move from centralized to distributed Samuel Le Berrigaud, Developer, Atlassian 2 Friday, April 20, 12

3. Samuel Le Berrigaud Developer relations samuel@atlassian.com @sleberrig Friday, April 20, 12

4. DVCS @ Unite Friday, April 20, 12

5. DVCS @ Unite Issue Tracker Friday, April 20, 12

6. DVCS @ Unite Content Collaboration Friday, April 20, 12

7. build it check get in Task write code Friday, April 20, 12

8. build it check get in Task write code Friday, April 20, 12

9. build it check get in Task write code Friday, April 20, 12

10. build it check get in Task write code Friday, April 20, 12

11. build it check get ? in Task write code Friday, April 20, 12

12. What is version control? Friday, April 20, 12

13. What is version control? Collaboration History Copies /Branches Friday, April 20, 12

14. The Past Friday, April 20, 12

15. Centralized Version Control Subversion server Friday, April 20, 12

16. Centralized Version Control Subversion server Friday, April 20, 12

17. “ Have you ever tried to merge with SVN? Need I say more. ” Friday, April 20, 12

18. Merge Time Friday, April 20, 12

19. The Present (and future) Friday, April 20, 12

20. Distributed Version Control Friday, April 20, 12

21. Distributed Version Control Git or Mercurial Git or Mercurial Git or Mercurial Git or Mercurial Git or Mercurial Git or Mercurial Friday, April 20, 12

22. “ Distributed Version Control is flexible and can fit any workflow - you can even treat it like Subversion. ” Steve Streeting Inventor of SourceTree Friday, April 20, 12

23. New idea? 1997 co-op Friday, April 20, 12

24. New idea? 2001 arch Friday, April 20, 12

25. New idea? 2003 monotone Friday, April 20, 12

26. New idea? 2003 svk Friday, April 20, 12

27. New idea? 2003 darcs Friday, April 20, 12

28. New idea? 2005 bazaar Friday, April 20, 12

29. New idea? 2005 mercurial Friday, April 20, 12

30. New idea? 2005 git Friday, April 20, 12

31. New idea? 2007 iPhone Friday, April 20, 12

32. Notice a Trend Friday, April 20, 12

33. Notice a Trend Friday, April 20, 12

34. Notice a Trend Friday, April 20, 12

35. DVCS @ Atlassian Friday, April 20, 12

36. Why? Development Workﬂow Friday, April 20, 12

37. Friday, April 20, 12

38. More Why’s? Friday, April 20, 12

39. More Why’s? Code without Limitations Friday, April 20, 12

40. Dev Speed Friday, April 20, 12

41. View File History Friday, April 20, 12

42. View Authors/Blame Friday, April 20, 12

43. Creating Branches Friday, April 20, 12

44. Speed is power Friday, April 20, 12

45. Speed is power git rm hg blame hg clone git show git mv hg revert git log hg move hg pull -update git status Friday, April 20, 12

46. Commit Often Friday, April 20, 12

47. No Servers Friday, April 20, 12

48. Dev Speed Friday, April 20, 12

49. Dev Speed Friday, April 20, 12

50. Code without Limitations Friday, April 20, 12

51. Branching & Merging Friday, April 20, 12

52. Branching & Merging $ svn merge Friday, April 20, 12

53. Don‘t be afraid Friday, April 20, 12

54. Protips • DVCS Knowledge • Follow the Recipe • CI is your friend Friday, April 20, 12

55. DVCS Knowledge Friday, April 20, 12

56. Make use of Guru Friday, April 20, 12

57. DVCS Client Git and Mercurial Mac Client Friday, April 20, 12

58. FishEye - VCS to DVCS • See commits in SVN & DVCS • Browse source in any VCS Subversion, Git, Hg, CVS, P4 Browse and Search source across any VCS Friday, April 20, 12

59. Follow the Recipe Friday, April 20, 12

60. Bring your History Friday, April 20, 12

61. Tool Integration Friday, April 20, 12 { }

62. Replicate Team Process Friday, April 20, 12

63. Incremental Steps Friday, April 20, 12

64. Continuous Integration is your friend • Vital part of dev cycle • Run same builds against old and new VCS • Continuous Validation Friday, April 20, 12

65. Make the Switch • DVCS has great business and technical beneﬁts • Atlassian is shaping the future of DVCS Friday, April 20, 12

66. Learn More & Have a Play http://blogs.atlassian.com/tag/ switch_dvcs/ Friday, April 20, 12

67. Thank You Friday, April 20, 12

20120315 atlassian unite - dvcs

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