Skip to content

Latest commit

 

History

History
207 lines (162 loc) · 5.72 KB

serverless.md

File metadata and controls

207 lines (162 loc) · 5.72 KB

Serverless Architecture Standards

This document outlines the standards and best practices for serverless architecture development at Bayat.

Platform Selection

Cloud Providers

  • AWS Lambda: Primary platform for AWS-based solutions
  • Azure Functions: Primary platform for Azure-based solutions
  • Google Cloud Functions: Primary platform for GCP-based solutions
  • Platform Selection Criteria: Guidelines for choosing between providers based on project requirements

Framework Selection

  • AWS SAM/CDK: For AWS Lambda development
  • Azure Functions Core Tools: For Azure Functions development
  • Serverless Framework: For cross-cloud development
  • Framework Selection Criteria: Guidelines for choosing between frameworks

Architecture Patterns

Function Design

  1. Single Responsibility Principle:

    • One function, one responsibility
    • Clear input/output contracts
    • Maximum function size guidelines

  2. Event-Driven Patterns:

    • Event source selection guidelines
    • Event schema standards
    • Error handling patterns for event-driven architectures

  3. API Patterns:

    • RESTful API design with serverless
    • GraphQL implementation patterns
    • API versioning standards

Composition Patterns

  1. Orchestration:

    • Step Functions (AWS) / Durable Functions (Azure) patterns
    • State management guidelines
    • Long-running process patterns

  2. Choreography:

    • Event-based communication standards
    • Eventual consistency patterns
    • Saga pattern implementation guidelines

Integration Patterns

  • Database Integration: Standards for connecting to various database types
  • Legacy System Integration: Patterns for connecting to non-serverless systems
  • Third-Party Service Integration: Guidelines for external API integration

Development Practices

Local Development

  • Local runtime environment requirements
  • Mocking external services guidelines
  • Environment parity standards

Testing

  1. Unit Testing:

    • Test framework selection
    • Mocking strategies
    • Coverage requirements

  2. Integration Testing:

    • Test environment setup
    • Service virtualization patterns
    • Test data management

  3. Load Testing:

    • Concurrency testing requirements
    • Cold start performance testing
    • Cost estimation testing

Deployment

  1. Infrastructure as Code:

    • CloudFormation/CDK (AWS), Bicep/ARM (Azure), or Terraform requirements
    • Environment configuration management
    • Stack organization guidelines

  2. CI/CD:

    • Pipeline configuration standards
    • Deployment strategy (all-at-once, canary, blue/green)
    • Rollback procedures

Monitoring and Observability

  1. Logging:

    • Structured logging requirements
    • Log level standards
    • Sensitive data handling

  2. Metrics:

    • Standard metrics to collect
    • Custom metrics guidelines
    • Dashboard configuration standards

  3. Tracing:

    • Distributed tracing implementation
    • Correlation ID requirements
    • Sampling strategy guidelines

Performance Optimization

Cold Start Mitigation

  • Provisioned concurrency guidelines
  • Warm-up strategies
  • Code size optimization requirements

Execution Optimization

  • Memory allocation guidelines
  • Dependency management best practices
  • Execution duration optimization techniques

Cost Optimization

  • Resource sizing guidelines
  • Auto-scaling configuration patterns
  • Cost monitoring requirements

Security

Authentication and Authorization

  • Identity provider integration patterns
  • JWT/OAuth implementation guidelines
  • Fine-grained access control patterns

Secrets Management

  • Secrets storage standards (AWS Secrets Manager, Azure Key Vault, etc.)
  • Secret rotation requirements
  • Environment variable usage guidelines

Code Security

  • Function permission scoping requirements
  • Dependency vulnerability scanning
  • Code review checklist for serverless applications

Networking

VPC Integration

  • Private VPC access patterns
  • VPC endpoint usage guidelines
  • Network isolation strategies

API Security

  • API Gateway configuration standards
  • Rate limiting requirements
  • Request validation patterns

Data Management

Database Selection

  • Criteria for choosing between DynamoDB, Cosmos DB, Firestore, etc.
  • Relational vs. NoSQL decision framework
  • Multi-table design patterns

Data Access Patterns

  • Connection pooling standards
  • Transaction management in serverless
  • Batch processing guidelines

State Management

  • Stateless design principles
  • External state store patterns
  • Caching strategies

Scalability and Reliability

Auto-scaling

  • Concurrency limit guidelines
  • Scaling trigger configuration
  • Quota management

Error Handling

  • Retry policy standards
  • Dead letter queue configuration
  • Circuit breaker implementation patterns

Resiliency

  • Multi-region deployment guidelines
  • Disaster recovery patterns
  • Failover testing requirements

Documentation

Function Documentation

  • Function metadata documentation requirements
  • Input/output schema documentation
  • Example invocation documentation

Architecture Documentation

  • Event flow documentation standards
  • System boundary documentation
  • Integration point documentation

References