JuniorDev TechWeek19 Show Case

Transcript

1. juniorDev TGA
2. juniorDevTGA MATIAS IACONO Coding on a 40 year old computer to understand today’s technology Tauranga Showcase May 20, 5pm @ BaseStation RSVP : meetup.com/juniordev-tauranga
3. Coding on a 40 year old computer to understand today’s technology A journey to madness and its way back
4. About me Matías Iacono
5. Why coding in an old computer? - Because you can. - Because is a challenge. - Because... code quality!
6. Some history first!
7. Sinclair ZX 81 - 1 KB of memory - … and that’s all!
8. Sinclair ZX Spectrum - 16 KB of memory (48 KB to 128 KB for later models ). - Basic as official included programing language. - Assembler for the braves!
9. Why this is a challenge? 8 GB of RAM from a standard computer today 48 KB of RAM = .23 km
10. That is not all!
11. Processor speed ZX80 = 3.5MHz Intel i5 = 2.9GHz ~= 0.01015 the power of an i5
12. Coding!
13. A simple game (of 4400 lines ) ld hl,msgdat ld a,b dec a cp 32 jr nc,iscrl0 A for...loop to decrease A and jump to other part of the code if A is equals to 32.
14. Demo time!
15. Why is important?
16. Every bit matters!
17. Speed and quality What the consumer wants - Good code is easy to maintain (Cyclomatic complexity). - Fast code increase customer quality perception. - Good code is less prone to bugs. - Good code cost less!
18. Real life examples
19. C# developers and strings https://github.com/dotnet/coreclr/blob/19a88d8a92e08c8506f6e69c3964dc77329c108a/src/vm/amd 64/JitHelpers_Slow.asm#L274-L322 https://github.com/dotnet/coreclr/blob/19a88d8a92e08c8506f6e69c3964dc77329c108a/src/mscorlib/s rc/System/String.cs#L963-L975 [System.Security.SecurityCritical] // auto-generated [MethodImplAttribute(MethodImplOptions.InternalCall)] internal extern static String FastAllocateString(int length);
20. More strings
21. Loading speed in mobile
22. The “way back”
23. Why coding for an old computer? - Gives you a different vision of the available resources in your system (They are precious). - Force you to think more creative ways of coding. - Helps you to create better code. - Will help you to spend less time and money fixing bugs. - Will make your customer happier.
24. Thanks!
25. juniorDevTGA ADAM & LIAT REIS helloclub.com Building a SaaS application with hardware component from scratch Tauranga Showcase May 20, 5pm @ BaseStation RSVP : meetup.com/juniordev-tauranga
26. Tech Showcase Adam Reis & Liat Reis Co-founders
27. Who we are Adam • Born in The Netherlands • M.Sc. in Aerospace Engineering • 10 years web development company • 5 years freelance dev & consultant • Started Hello Club in 2016 Liat • Born in Israel • B.Sc. in Mathematics & Computer science • 6 years developer • 3 years freelance dev & consultant • Started Hello Club in 2016
28. What is Hello Club? Managing a club or organisation can be hard...
29. What is Hello Club? We make it easier and more rewarding!
30. What is Hello Club? All the tools you need to efficiently manage your club or organisation Used by tens of thousands users worldwide
31. 3rd Party Integrations Try not to reinvent the wheel
32. Access Control System +
33. Our Tech Stack We use the MEAN stack: MongoDB – Document database Express – Backend API framework Angular – Frontend web framework Node – Javascript runtime environment Basically 100% Javascript
34. Frontend – Angular.js Angular.js At the time the most popular javascript front-end framework • Supported by Google • Major rewrite to components • But… starting to show its age • Reached end of life • Planning upgrade to Vue.js
35. Backend – Node, Express, MongoDB Node Pure modern Javascript leveraging all the latest ES2016+ features Express Flexible web application framework • Super fast & scalable • Quick & easy to develop with • Easy to maintain • Fun to work with
36. Wait… no mobile app?
37. Progressive Web App Fully mobile friendly: runs like an app & leverages mobile features like notifications, camera, etc.
38. Infrastructure & Hosting Leveraging modern PaaS hosting solutions for fast deployments, scalability and data security
39. Support, Marketing & Help Centre Intercom Great all-in-one product for managing your support & sales channels • Direct chat for users & leads • Release announcements • Easy to integrate • Self service help centre
40. The #1 Most Asked Support Query ?
41. The #1 Most Asked Support Query No matter how easy and user friendly you make it, people will always find ways to break it. “Help! I can’t login!”
42. Processing Payments Initially we collected payments into our own bank account, but… • Lots of work and added overhead • Prone to mistakes • More responsibility • Regulatory requirements • Anti-money laundering act
43. Processing Payments Now each club gets their own Stripe and/or POLi account • Money going straight to the clubs • Scalable & faster payouts • Less responsibility • Stripe Connect allows automatic deduction of platform fees • Big change, but just in time
44. Lessons learnt What have we learnt from building our SaaS application? • You will have to update your tech stack at some point • Keep up with technology • Keep learning & innovating • Listen to your users, ask for feedback often • The product is never finished • Challenges will come, but don’t let them stop you
45. Q&A
46. juniorDevTGA ADAM BROADBENT willingweb.com Using Open Source to create passive income through WordPress plugins Tauranga Showcase May 20, 5pm @ BaseStation RSVP : meetup.com/juniordev-tauranga
47. Using Open Source for passive income through a WordPress plugin. Adam Broadbent (Willing Web)
51. WordPress • OceanWP Theme & Plugins • Advanced Custom Fields Pro (database fields) • WP All Import (spreadsheet upload) • Yoast SEO • Custom Plugin e.g. mattress.zone
53. Mattress.Zone The worlds leading mattresses and mattress companies side-by-side.
55. juniorDevTGA ROLAND RICH Guarding our ecosystem through offline mobile applications. Tauranga Showcase May 20, 5pm @ BaseStation RSVP : meetup.com/juniordev-tauranga
57. • System to allow all New Zealanders to help identify biosecurity pests in New Zealand • Why? Because our economy is heavily reliant on primary production and our isolation provides the opportunity to protect ourselves and our natural environment from new pests and diseases.
58. Traditional Website: • Always up to date • Not available offline Traditional Mobile Application: • Available offline • Not up-to-date
59. Complete offline functionality • Viewing data • Submitting observations Completely data driven • Administrators can update data • Online devices will update immediately • Offline devices will synchronise as soon as they get connection
63. juniorDevTGA BRADLEY ZANGEL Spaghetti to lasagne; integrating new frameworks into legacy PHP code Tauranga Showcase May 20, 5pm @ BaseStation RSVP : meetup.com/juniordev-tauranga zantech.co.nz
64. Spaghetti To Lasagne MODERNISING A LEGACY PHP APPLICATION
65. “Everyone else’s code sucks” - Programmers ► Especially when it’s legacy PHP
68. Complete rewrite ► Time ► Client satisfaction ► Bugs and business rules: battle tested ► Solution: Refactor/Gradual Rewrite
69. Refactor/Gradual rewrite ► Move code out into classes as it is worked on ► Allows for testing, DRY ► Symfony Framework ► Modular, well supported, open source ► Old and new framework running side by side
70. Working with old framework ► Link symfony framework components into old codebase ► Authentication – AD integration ► Dependency Injection ► Doctrine ORM – Easy DB access/CRUD ► Templating - Twig ► Forms – Symfony Form Component ► Other Services - Symfony->old bridge
71. Old New
72. Working with Symfony ► Completely New Features ► Some old->new bridging required ► Existing code with enough feature adds to warrant rewrite ► Thorough understanding of old code and business rules ► New is cheaper than working on old
73. Thanks!
74. juniorDevTGA JOSH BIDDICK App building to save the world with Flutter Tauranga Showcase May 20, 5pm @ BaseStation RSVP : meetup.com/juniordev-tauranga
95. Where to find us?