多代理编排:当一个代理还不够时

Supervisor-Worker Patterns for Complex Workflows

Single-agent architectures work well for focused, domain-specific tasks, but enterprise workflows often span multiple domains and require coordinated action across disparate systems. A supervisor-worker pattern addresses this by introducing a coordinating agent that decomposes complex requests into sub-tasks and delegates each to a specialized worker agent. The supervisor manages the overall workflow state, handles dependencies between sub-tasks, and aggregates results. For example, when processing a department reorganization, the supervisor decomposes the request into HR structure changes, IT access modifications, facility reassignments, and budget reallocations. Each sub-task is delegated to the appropriate specialist agent. The supervisor tracks completion, manages the dependency chain where access changes must follow HR changes, and handles any failures in individual sub-tasks without abandoning the entire workflow.

Agent Specialization: Domain Experts That Collaborate

Specialization is a deliberate architectural choice, not a limitation. A specialized agent has a focused set of tool integrations, a curated knowledge base for its domain, and fine-tuned prompting that reflects domain-specific vocabulary and decision patterns. An HR specialist agent understands leave policies, benefits enrollment, and compliance requirements. An IT specialist agent knows how to provision accounts, troubleshoot connectivity issues, and manage software licenses. A finance specialist agent handles invoice processing, expense approvals, and budget queries. Each specialist agent is smaller, faster, and more accurate within its domain than a generalist agent that tries to cover everything. When these specialists work together under a supervisor, the system delivers broad coverage without sacrificing depth. The specialists communicate through a structured message protocol that includes context summaries, action requests, and status reports, allowing each agent to operate with the information it needs without requiring access to the full state of every other agent.

Error Recovery and Graceful Degradation in Multi-Agent Systems

Multi-agent systems introduce failure modes that do not exist in single-agent architectures. A worker agent might fail, timeout, or return an unexpected result. A dependency between sub-tasks might create a deadlock. A downstream system might become unavailable mid-workflow. Robust multi-agent orchestration requires explicit strategies for each failure mode. When a worker agent fails, the supervisor can retry the task, route it to an alternative agent with overlapping capabilities, or mark it for human review while continuing with independent sub-tasks. When a dependency chain breaks, the supervisor can execute compensating actions to roll back completed steps that depend on the failed one. When a downstream system is unavailable, the supervisor can defer affected sub-tasks and notify the requester of a partial completion with an estimated timeline for the remainder. The key principle is graceful degradation: the system should deliver as much value as possible even under partial failure, rather than failing completely because one component is unavailable. This resilience is what makes multi-agent systems suitable for enterprise production, where perfect conditions are the exception rather than the rule.