The last infrastructure talk for web developers @ PHP Serbia Conference 2018

https://conf2018.phpsrbija.rs/sessions#serverless

Transcript

1. The last infrastructure talk for web developers or why your future apps will be serverless
2. Slobodan Stojanovic CTO @ Cloud Horizon co-author of Serverless Apps with Node and Claudia.js @slobodan_ effortless-serverless.com
3. @slobodan_ Do you know the feeling when…
4. @slobodan_ • you solve the problem you worked on last couple of days in just five minutes this morning • you successfully implemented a new tool/framework on your new project • you receive an awesome feedback from your customer • you work on interesting problems in an awesome team • you have a brilliant new idea, and you can't stop coding it
5. @slobodan_ The good
6. @slobodan_ But, do you also know the feeling when…
7. @slobodan_ • spending two days trying to setup vagrant/homestad for a project you just jumped in • setup a dev server, because that's no one's job but you need it • apply new security patches on all of the servers • try to figure out how to do yet another thing with Docker • try to sell yet another necessary refactoring to your client or boss
8. @slobodan_ The bad
9. @slobodan_ Finally, do you know the feeling when…
10. @slobodan_ • you have an important demo, you worked hard on for a few weeks, and it just doesn't work on the server • you have server and application issues during an important event or advertising campaign • one of your Wordpress sites is hacked • you need to fix an urgent issue during the weekend or in the middle of the first vacation you had in a few years
11. @slobodan_ The ugly
12. @slobodan_ What is your job?
13. @slobodan_ Is it to write a code?
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15. @slobodan_
16. @slobodan_ I hope it's not that :)
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19. @slobodan_ Your job should be to understand the business needs and empower it with technology
20. @slobodan_ How did we end up here?
21. @slobodan_ How did we end up here? or the evolution
22. @slobodan_ Genesis of compute and applications (ie. Eniac)
23. @slobodan_ Custom built compute and applications, and genesis of operating systems
24. @slobodan_ Compute, applications and OS are products,
 genesis of good architecture practices
25. @slobodan_ New good programming practices and custom built frameworks
26. @slobodan_ Cloud
27. @slobodan_ New architectural best practices
28. @slobodan_ DevOps
29. @slobodan_ But, what's next? …and can we do better?
30. @slobodan_ Simon Wardley explains it better with "Why the Fuss about Serverless?" and Wardley maps
31. @slobodan_ From "Why the Fuss about Serverless?" (https://youtu.be/SPsaqiegOP4)
32. @slobodan_ From "Why the Fuss about Serverless?" (https://youtu.be/SPsaqiegOP4)
33. @slobodan_ From "Why the Fuss about Serverless?" (https://youtu.be/SPsaqiegOP4)
34. @slobodan_ From "Why the Fuss about Serverless?" (https://youtu.be/SPsaqiegOP4)
35. @slobodan_ … serverless
36. @slobodan_ What is serverless, anyway?
37. @slobodan_ Serverless computing is a cloud-computing execution model in which the cloud provider dynamically manages the allocation of machine resources.
38. @slobodan_ Pricing is based on the actual amount of resources consumed by an application, rather than on pre-purchased units of capacity.
39. @slobodan_ What does that mean?
40. @slobodan_ What does that mean?
41. @slobodan_ Serverless app costs you nothing* if nobody is using it * except storage price
42. @slobodan_ Benefits?
43. @slobodan_ • Autoscaling • Pay for used capacity only • No server maintenance • Short time to market • Cheap
44. @slobodan_ Why is serverless important?
45. @slobodan_ Why is serverless important? to me »
46. @slobodan_ Most of the time we use big companies, such as Netflix or Facebook, as role models for our tech. They do amazing things, but are they really good role models for small companies?
47. @slobodan_ You'll never have most of the problems they have. Should you use the same best practices?
48. @slobodan_
49. @slobodan_ On the other hand, serverless brings most benefits to small and medium business
50. @slobodan_
51. @slobodan_ But that's not all
52. @slobodan_ • simplifies my apps • allows small teams to move fast and accomplish more • function isolation • managed infrastructure + autoscaling • code reusability • financial incentives for refactoring
53. @slobodan_
54. @slobodan_ It also reduces the amount of back end code* * probably not the smartest thing to say on BE conference :)
55. @slobodan_
56. @slobodan_ "Oh, and I only hire front-end developers at this point. I have been the sole DevOps/backend/ middle-tier developer in the last two companies I started, and it’s been fine." Joe Emison (@JoeEmison)
57. @slobodan_ "With AppSync I could continue to be the CTO, do all the backend and middle-tier code, and support up to probably about a hundred front-end developers before I would need a dedicated backend developer." Joe Emison (@JoeEmison)
58. @slobodan_ Can I host my serverless infrastructure?
59. @slobodan_ You can, but it's not serverless anymore
60. @slobodan_ "There's a difference between managed infrastructure and managed compute.
 You're fully serverless only when both infrastructure and compute are managed" Ben Kehoe (@ben11kehoe)
61. @slobodan_ So, functions on your own architecture are not serverless
62. @slobodan_ Neither are containers that are running even if no-one is using them
63. @slobodan_ What do we need to change to get benefits from serverless?
64. @slobodan_ Mindset
65. @slobodan_
66. @slobodan_ "Transition to the #cloud: treat servers like cattle, not pets. Transition to #serverless cloud architecture: treat servers like roaches" Ben Kehoe (@ben11kehoe)
67. @slobodan_ No more large frameworks
68. @slobodan_ Simplify things
69. @slobodan_ Move fast
70. @slobodan_ Process Driven Development cc. @simalexan
71. @slobodan_ Are there any serverless patterns and anti-patterns?
72. @slobodan_ Genesis of patterns and anti-patterns
73. @slobodan_ Serverless monolith
74. @slobodan_ Serverless monolith
75. @slobodan_ Fanout
76. @slobodan_ Fanout
77. @slobodan_ Fanout
78. @slobodan_ Fanout
79. @slobodan_ Fanout
80. @slobodan_ Create your own patterns and anti- patterns. Just be creative!
81. @slobodan_ How does serverless work in practice?
82. @slobodan_ CodePen codepen.io
83. @slobodan_ • team of mostly front end developers + one DevOps • Ruby on Rails backend • many preprocessors that needs full isolation • > 200k requests/hour in peak • unexpected peaks (you never know when some pen will become popular)
84. @slobodan_
85. @slobodan_ Benefits?
86. @slobodan_ • shorter time to market • front end devs can deploy production-ready preprocessors without DevOps help • autoscaling and isolation • superpowers for front end developers
87. @slobodan_ Desole desole.io
88. @slobodan_ Desole is an open source error-tracking system you can install in your AWS account.
89. @slobodan_ It enables orgs to track app exceptions and errors without having to choose between the convenience of SaaS and the security of a self-hosted solution.
90. @slobodan_ • convenient and secure • cheap and scalable • one click installation from Serverless AppRepo • GDPR friendly :)
91. @slobodan_
92. @slobodan_ Three person team and 2-3 days of development
93. @slobodan_ Vacation Tracker Bot vacationtrackerbot.com
94. @slobodan_ • small in-company startup (1-2 developers) • Slack chatbot + API + Angular dashboard • current cost of the infrastructure: $0
95. @slobodan_
96. @slobodan_ Benefits?
97. @slobodan_ • small team • reusable parts for the next product • short time to market • cheap infrastructure • easy refactoring and changes
98. @slobodan_ Result?
99. @slobodan_ vacationtrackerbot.com
100. @slobodan_ Live Demo
101. @slobodan_ Live Demo …or how does serverless work
102. @slobodan_
103. @slobodan_ Links to things that I mentioned
104. @slobodan_ • Claudia.js - https://claudiajs.com • Desole - https://desole.io • Vacation Tracker - https://vacationtrackerbot.com
105. @slobodan_ Summary
106. @slobodan_ • do not be religious about your framework and tools • be open-minded and embrace new technology • your job is to understand and empower the business, use the best tools to accomplish that • check out serverless, it might help you
107. @slobodan_ One more thing!
108. @slobodan_
109. @slobodan_
110. @slobodan_ Serverless Apps with Node and Claudia.js Use ctwphpsrb18 promo code for 40% off effortless-serverless.com/book @slobodan_
111. Thanks!