← Concepts

阅读中文版本

Process Manager Pattern

Process Manager Pattern governs workflow coordination, shaping system behavior under specific failure modes and workloads.

architecture

Definition

Process Manager Pattern is a design property concerning workflow coordination. It defines how the system behaves under specific conditions — what guarantees hold, what trade-offs apply, and how the mechanism interacts with related techniques. The property is only meaningful when its preconditions are met; outside those conditions it provides no benefit and may add cost.

Context and scope

Apply Process Manager Pattern when designing systems where workflow coordination matters. It is most useful under partial failure, high load, or correctness requirements. Pair it with observability to verify the claimed behavior in production. Do not assume the property holds without testing the specific configuration and workload.

Common misconceptions

  • Process Manager Pattern eliminates all problems in its domain — it only bounds or shapes specific failure modes, not all pathologies.
  • Process Manager Pattern is free once you adopt the right tool — the property depends on configuration, workload, and failure pattern, not the product label alone.

Anti-patterns

  • Enabling Process Manager Pattern without measuring its cost in latency, availability, or operational complexity under production-like conditions.
  • Assuming Process Manager Pattern composes safely with other guarantees — combining mechanisms can introduce new failure modes or negate benefits.

Related concepts

Authoritative source

https://martinfowler.com/architecture/

What it is

Process Manager Pattern is a design property concerning workflow coordination. It defines how the system behaves under specific conditions — what guarantees hold, what trade-offs apply, and how the mechanism interacts with related techniques. The property is only meaningful when its preconditions are met; outside those conditions it provides no benefit and may add cost.

When to use

Apply Process Manager Pattern when designing systems where workflow coordination matters. It is most useful under partial failure, high load, or correctness requirements. Pair it with observability to verify the claimed behavior in production. Do not assume the property holds without testing the specific configuration and workload.

Common misconceptions

  • Process Manager Pattern eliminates all problems in its domain — it only bounds or shapes specific failure modes, not all pathologies.
  • Process Manager Pattern is free once you adopt the right tool — the property depends on configuration, workload, and failure pattern, not the product label alone.

Anti-patterns to avoid

  • Enabling Process Manager Pattern without measuring its cost in latency, availability, or operational complexity under production-like conditions.
  • Assuming Process Manager Pattern composes safely with other guarantees — combining mechanisms can introduce new failure modes or negate benefits.
  • saga-orchestration-design (saga-orchestration-design)
  • Saga Pattern (saga-pattern)