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Serverless Functions: Design Patterns and Best Practices

Build scalable serverless applications. Learn function design, cold starts, and operational strategies.

B
Bootspring Team
Engineering
February 26, 2026
1 min read

Serverless computing abstracts infrastructure management for scalable applications.

Function Design#

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Cold Start Optimization#

  • Keep functions small
  • Initialize SDK clients outside handler
  • Use provisioned concurrency for latency-sensitive functions
  • Choose appropriate memory settings

Event Patterns#

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Step Functions for Workflows#

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Design for statelessness, embrace event-driven patterns, and monitor cold starts.

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