architecture 1 min read

Day 16 of #DistributedDilemmas: Serverless doesn't mean worry-free

Serverless doesn't mean worry-free. Cold starts and hidden state create new classes of distributed problems. While offering auto-scaling and cost…

Cold starts and hidden state create new classes of distributed problems.

While offering auto-scaling and cost efficiency, these systems require careful architectural decisions to handle stateful operations and latency-sensitive workloads.

Exhibit A:

  • Coca-Cola’s IoT vending machines using AWS Lambda scaled from 30 million to 80 million monthly requests, reducing costs by 65% per machine.

However, this required rethinking state management:

  1. Payment sessions and user preferences had to be externalized to databases.
  2. Transactional consistency was maintained via DynamoDB instead of local function states.

Read more: https://www.serverless.direct/post/serverless-architecture-examples

Day 16 diagram: Serverless doesn't mean worry-free

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