Api Gateway Workflow
API Gateway pattern with request authentication, rate limiting, request routing to backend services, response aggregation, and error handling.
Circuit Breaker Workflow
Circuit breaker resilience pattern with closed, open, and half-open states for protecting services from cascading failures with automatic recovery testing.
Full FlowZap Code
Client { # Client Application
n1: circle label:"Start"
n2: rectangle label:"Initiate service call"
n3: rectangle label:"Receive response"
n4: rectangle label:"Process fallback response"
n5: circle label:"End"
n1.handle(right) -> n2.handle(left)
n2.handle(bottom) -> CircuitBreaker.n6.handle(top) [label="Request"]
n3.handle(right) -> n5.handle(left)
n4.handle(right) -> n5.handle(left)
}
CircuitBreaker { # Circuit Breaker
n6: diamond label:"Circuit state?"
n7: rectangle label:"Allow request through"
n8: rectangle label:"Return cached fallback"
n9: rectangle label:"Increment failure count"
n10: diamond label:"Failure threshold reached?"
n11: rectangle label:"Open circuit"
n12: rectangle label:"Reset failure count"
n13: rectangle label:"Start half-open timer"
n6.handle(right) -> n7.handle(left) [label="Closed"]
n6.handle(bottom) -> n8.handle(top) [label="Open"]
n6.handle(left) -> n7.handle(top) [label="Half-Open"]
n7.handle(bottom) -> ExternalService.n14.handle(top) [label="Forward"]
n8.handle(top) -> Client.n4.handle(bottom) [label="Fallback"]
n9.handle(right) -> n10.handle(left)
n10.handle(right) -> n11.handle(left) [label="Yes"]
n10.handle(bottom) -> n12.handle(top) [label="No"]
n11.handle(right) -> n13.handle(left)
n12.handle(top) -> Client.n3.handle(bottom) [label="Success"]
n13.handle(top) -> Client.n4.handle(bottom) [label="Tripped"]
}
ExternalService { # External Service
n14: rectangle label:"Process request"
n15: diamond label:"Request successful?"
n16: rectangle label:"Return success response"
n17: rectangle label:"Return error response"
n14.handle(right) -> n15.handle(left)
n15.handle(right) -> n16.handle(left) [label="Yes"]
n15.handle(bottom) -> n17.handle(top) [label="No"]
n16.handle(top) -> CircuitBreaker.n12.handle(bottom) [label="OK"]
n17.handle(top) -> CircuitBreaker.n9.handle(bottom) [label="Error"]
}
Related templates
Retry With Backoff Workflow
Exponential backoff retry pattern for API calls with configurable retry limits, delay calculation, retryable error detection, and graceful degradation on permanent failures.
Saga Pattern Workflow
Saga orchestration pattern for distributed transactions across Order, Payment, and Shipping services with automatic compensation rollback on failures.
Circuit Breaker Resilience Architecture
A circuit breaker resilience architecture diagram showing the complete state machine with closed, open, and half-open states, failure threshold tracking, recovery timer, and fallback response strategies for protecting services from cascading failures. This template visualizes the circuit breaker pattern in detail, including how the breaker transitions between states based on success and failure counts. Essential for building fault-tolerant microservices that degrade gracefully under load.
A B Testing Workflow
This workflow models comparing two versions to see which performs better.