Confusion In The Land Of The Serverless
Serverless computing is the hot new thing. Like any hyped technology, it promises a lot. However questions remain around concept and implementation, especially when you start to compare how we've built systems in the past, and what serverless offers us now. Is Serverless the future, or just the emperor's new clothes? This talk will very briefly introduce serverless computing, but will then dive into some of the questions that aren't always asked in conjunction with this technology. Topics will include: How does your attitude to security change? Is it easier, or harder, to create reliable, resilient systems? Do patterns like Circuit breakers and connection pools make sense any more? Is vendor lock-in a problem? Is serverless computing only for microservice architectures? Which problems fit serverless computing? By the end of the talk you should have a firm grasp of what serverless computing really can offer, cut through some of the hype, and get an understanding about where and how you can use it in your own organisations.
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Confusion In The Land Of The Serverless
- 1. Confusion in the land of the serverless NDC Oslo 2017 Sam Newman
- 4. @samnewman#ndcoslo Sam Newman & Associates (there are no associates)
- 18. @samnewman#ndcoslo http://readwrite.com/2012/10/15/why-the-future-of-software-and-apps-is-serverless/ The phrase “serverless” doesn’t mean servers are no longer involved. It simply means that developers no longer have to think that much about them. Computing resources get used as services without having to manage around physical capacities or limits.
- 25. @samnewman#ndcoslo Server Server Server Server Platform Yay, serverless! So abstract Much PAYG WOW!
- 26. @samnewman#ndcoslo Server Server Server Server Platform Yay, serverless! So abstract Much PAYG WOW! Wat?
- 29. @samnewman#ndcoslo Mike Roberts’ Definition Of Serverless
- 30. @samnewman#ndcoslo 1. No management of server hosts or server processes Mike Roberts’ Definition Of Serverless
- 31. @samnewman#ndcoslo 1. No management of server hosts or server processes 2. Self auto-scale and auto-provision based on load Mike Roberts’ Definition Of Serverless
- 32. @samnewman#ndcoslo 1. No management of server hosts or server processes 2. Self auto-scale and auto-provision based on load 3. Costs based on precise usage Mike Roberts’ Definition Of Serverless
- 33. @samnewman#ndcoslo 1. No management of server hosts or server processes 2. Self auto-scale and auto-provision based on load 3. Costs based on precise usage 4. Performance capabilities defined in terms other than host size/count Mike Roberts’ Definition Of Serverless
- 34. @samnewman#ndcoslo 1. No management of server hosts or server processes 2. Self auto-scale and auto-provision based on load 3. Costs based on precise usage 4. Performance capabilities defined in terms other than host size/count 5. Implicit high availability Mike Roberts’ Definition Of Serverless
- 55. @samnewman#ndcoslo http://readwrite.com/2012/10/15/why-the-future-of-software-and-apps-is-serverless/ The phrase “serverless” doesn’t mean servers are no longer involved. It simply means that developers no longer have to think that much about them.
- 74. @samnewman#ndcoslo DB Connection Pool Connection pools throttle load And allow for load shedding
- 85. @samnewman#ndcoslo But what about hybrid apps?
- 94. @samnewman#ndcoslo Circuit breakers rely on maintaining per-client state across requests Risk Circuit Breaker
- 96. @samnewman#ndcoslo Risk Market Data Throttling & Load shedding middleware?
- 100. @samnewman#ndcoslo Friends don’t let friends run untrusted code in containers
- 101. @samnewman#ndcoslo
- 102. @samnewman#ndcoslo
- 103. @samnewman#ndcoslo
- 104. @samnewman#ndcoslo If your function isn’t running, it’s not there…
- 105. @samnewman#ndcoslo If your function isn’t running, it’s not there… …and you’re running in a sandbox anyway
- 108. @samnewman#ndcoslo
- 109. @samnewman#ndcoslo Don’t think lock-in, think migration cost
- 112. @samnewman#ndcoslo Cost of migration Blob storage
- 113. @samnewman#ndcoslo Cost of migration Compute Blob storage
- 114. @samnewman#ndcoslo Cost of migration Compute Blob storage Load balancers
- 115. @samnewman#ndcoslo Cost of migration Compute Blob storage Load balancers FAAS
- 116. @samnewman#ndcoslo Cost of migration Compute Blob storage Load balancers FAAS BAAS
- 117. @samnewman#ndcoslo Pay now or pay later
- 119. @samnewman#ndcoslo
- 124. @samnewman#ndcoslo I can’t use that, it’s not #serverless!